Merge "Use ro.build.type instead of ro.debuggable" into sc-dev
diff --git a/.gitignore b/.gitignore
index 5a5ea87..415166b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,2 @@
 *.pyc
 *.*~
-libc/kernel/original
diff --git a/docs/fdsan.md b/docs/fdsan.md
index 0e6783d..e0cf80a 100644
--- a/docs/fdsan.md
+++ b/docs/fdsan.md
@@ -2,6 +2,8 @@
 
 [TOC]
 
+fdsan is a file descriptor sanitizer added to Android in API level 29.
+
 ### Background
 *What problem is fdsan trying to solve? Why should I care?*
 
diff --git a/docs/fdtrack.md b/docs/fdtrack.md
index 5bc9860..7cf6e1f 100644
--- a/docs/fdtrack.md
+++ b/docs/fdtrack.md
@@ -1,5 +1,9 @@
 ## fdtrack
 
+[TOC]
+
+fdtrack is a file descriptor leak checker added to Android in API level 30.
+
 fdtrack consists of two parts: a set of hooks in bionic to register a callback
 that's invoked on file descriptor operations, and a library that implements a
 hook to perform and store backtraces for file descriptor creation.
diff --git a/docs/native_allocator.md b/docs/native_allocator.md
index 139d664..9fc9a31 100644
--- a/docs/native_allocator.md
+++ b/docs/native_allocator.md
@@ -329,7 +329,7 @@
 To run these benchmarks, first copy the trace files to the target using
 these commands:
 
-    adb shell push system/extras/traces /data/local/tmp
+    adb push system/extras/memory_replay/traces /data/local/tmp
 
 Since all of the traces come from applications, the `memory_replay` program
 will always call `mallopt(M_DECAY_TIME, 1)' before running the trace.
diff --git a/libc/Android.bp b/libc/Android.bp
index 4084b96..8922621 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -89,6 +89,7 @@
     header_libs: [
         "libc_headers",
         "gwp_asan_headers",
+        "liblog_headers",  // needed by bionic/libc/async_safe/include
     ],
     export_header_lib_headers: [
         "libc_headers",
@@ -274,7 +275,7 @@
 
     defaults: ["libc_defaults"],
     srcs: [
-        "dns/**/*.c",
+        "dns/**/*.c*",
 
         "upstream-netbsd/lib/libc/isc/ev_streams.c",
         "upstream-netbsd/lib/libc/isc/ev_timers.c",
@@ -1028,9 +1029,7 @@
         "bionic/arpa_inet.cpp",
         "bionic/assert.cpp",
         "bionic/atof.cpp",
-        "bionic/bind.cpp",
         "bionic/bionic_allocator.cpp",
-        "bionic/bionic_appcompat.cpp",
         "bionic/bionic_arc4random.cpp",
         "bionic/bionic_futex.cpp",
         "bionic/bionic_netlink.cpp",
@@ -1643,7 +1642,6 @@
     ],
     name: "libc",
     static_ndk_lib: true,
-    llndk_stubs: "libc.llndk",
     product_variables: {
         platform_sdk_version: {
             asflags: ["-DPLATFORM_SDK_VERSION=%d"],
@@ -1767,7 +1765,12 @@
             "current",
         ],
     },
-
+    llndk: {
+        symbol_file: "libc.map.txt",
+        export_headers_as_system: true,
+        export_preprocessed_headers: ["include"],
+        export_llndk_headers: ["libc_llndk_headers"],
+    },
     apex_available: [
         "//apex_available:platform",
         "com.android.runtime",
@@ -1858,13 +1861,11 @@
 }
 
 cc_library_headers {
-    // Internal lib for use in libc_headers. Since we cannot intersect arch{}
-    // and target{} in the same module, this one specifies the arch-dependent
-    // include paths, and then libc_headers filters by target so that the
-    // headers only are included for Bionic targets.
-    name: "libc_headers_arch",
+    name: "libc_llndk_headers",
     visibility: ["//visibility:private"],
-
+    llndk: {
+        llndk_headers: true,
+    },
     host_supported: true,
     vendor_available: true,
     product_available: true,
@@ -1892,7 +1893,6 @@
     sdk_version: "1",
 
     export_system_include_dirs: [
-        "include",
         "kernel/uapi",
         "kernel/android/scsi",
         "kernel/android/uapi",
@@ -1955,12 +1955,14 @@
 
     target: {
         android: {
-            header_libs: ["libc_headers_arch"],
-            export_header_lib_headers: ["libc_headers_arch"],
+            export_system_include_dirs: ["include"],
+            header_libs: ["libc_llndk_headers"],
+            export_header_lib_headers: ["libc_llndk_headers"],
         },
         linux_bionic: {
-            header_libs: ["libc_headers_arch"],
-            export_header_lib_headers: ["libc_headers_arch"],
+            export_system_include_dirs: ["include"],
+            header_libs: ["libc_llndk_headers"],
+            export_header_lib_headers: ["libc_llndk_headers"],
         },
     },
     bazel_module: { bp2build_available: true },
@@ -2300,41 +2302,6 @@
     first_version: "9",
 }
 
-llndk_library {
-    name: "libc.llndk",
-    symbol_file: "libc.map.txt",
-    export_headers_as_system: true,
-    export_preprocessed_headers: ["include"],
-    native_bridge_supported: true,
-    export_include_dirs: [
-        "kernel/android/scsi",
-        "kernel/android/uapi",
-        "kernel/uapi",
-    ],
-    arch: {
-        arm: {
-            export_include_dirs: [
-                "kernel/uapi/asm-arm",
-            ],
-        },
-        arm64: {
-            export_include_dirs: [
-                "kernel/uapi/asm-arm64",
-            ],
-        },
-        x86: {
-            export_include_dirs: [
-                "kernel/uapi/asm-x86",
-            ],
-        },
-        x86_64: {
-            export_include_dirs: [
-                "kernel/uapi/asm-x86",
-            ],
-        },
-    },
-}
-
 ndk_library {
     name: "libstdc++",
     symbol_file: "libstdc++.map.txt",
diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index d263508..391e7af 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -113,7 +113,7 @@
 int         msync(const void*, size_t, int)    all
 int         mprotect(const void*, size_t, int)  all
 int         madvise(void*, size_t, int)  all
-int         process_madvise(int, const struct iovec*, size_t, int, unsigned int)     all
+ssize_t     process_madvise(int, const struct iovec*, size_t, int, unsigned int)     all
 int mlock(const void* addr, size_t len)    all
 int mlock2(const void* addr, size_t len, int flags)    all
 int         munlock(const void* addr, size_t len)   all
@@ -245,7 +245,7 @@
 # sockets
 int           __socket:socket(int, int, int)              arm,lp64
 int           __socketpair:socketpair(int, int, int, int*)    arm,lp64
-int           __bind:bind(int, struct sockaddr*, socklen_t)  arm,lp64
+int           bind(int, struct sockaddr*, socklen_t)  arm,lp64
 int           __connect:connect(int, struct sockaddr*, socklen_t)   arm,lp64
 int           listen(int, int)                   arm,lp64
 int           __accept4:accept4(int, struct sockaddr*, socklen_t*, int)  arm,lp64
@@ -263,7 +263,7 @@
 
 # sockets for x86. These are done as an "indexed" call to socketcall syscall.
 int           __socket:socketcall:1(int, int, int) x86
-int           __bind:socketcall:2(int, struct sockaddr*, int)  x86
+int           bind:socketcall:2(int, struct sockaddr*, int)  x86
 int           __connect:socketcall:3(int, struct sockaddr*, socklen_t)   x86
 int           listen:socketcall:4(int, int)                   x86
 int           getsockname:socketcall:6(int, struct sockaddr*, socklen_t*)  x86
diff --git a/libc/arch-arm/bionic/__bionic_clone.S b/libc/arch-arm/bionic/__bionic_clone.S
index 6669b93..3fe212b 100644
--- a/libc/arch-arm/bionic/__bionic_clone.S
+++ b/libc/arch-arm/bionic/__bionic_clone.S
@@ -61,6 +61,8 @@
     b       __set_errno_internal
 
 .L_bc_child:
+    # We're in the child now. Set the end of the frame record chain.
+    mov    fp, #0
     # Setting lr to 0 will make the unwinder stop at __start_thread.
     mov    lr, #0
     # Call __start_thread with the 'fn' and 'arg' we stored on the child stack.
diff --git a/libc/arch-arm/bionic/setjmp.S b/libc/arch-arm/bionic/setjmp.S
index 5fbcaf3..2579143 100644
--- a/libc/arch-arm/bionic/setjmp.S
+++ b/libc/arch-arm/bionic/setjmp.S
@@ -87,28 +87,6 @@
   b sigsetjmp
 END(_setjmp)
 
-#define MANGLE_REGISTERS 1
-#define USE_CHECKSUM 1
-
-.macro m_mangle_registers reg
-#if MANGLE_REGISTERS
-  eor r4, r4, \reg
-  eor r5, r5, \reg
-  eor r6, r6, \reg
-  eor r7, r7, \reg
-  eor r8, r8, \reg
-  eor r9, r9, \reg
-  eor r10, r10, \reg
-  eor r11, r11, \reg
-  eor r13, r13, \reg
-  eor r14, r14, \reg
-#endif
-.endm
-
-.macro m_unmangle_registers reg
-  m_mangle_registers \reg
-.endm
-
 .macro m_calculate_checksum dst, src, scratch
   mov \dst, #0
   .irp i,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28
@@ -167,12 +145,30 @@
 
   // Save core registers.
   add r1, r0, #(_JB_CORE_BASE * 4)
-  m_mangle_registers r2
-
-  // ARM deprecates using sp in the register list for stmia.
-  stmia r1, {r4-r11, lr}
-  str sp, [r1, #(9 * 4)]
-  m_unmangle_registers r2
+  // Mangle the easy registers in-place, write them out in one go, and unmangle
+  // them again.
+  eor r4, r4, r2
+  eor r5, r5, r2
+  eor r6, r6, r2
+  eor r7, r7, r2
+  eor r8, r8, r2
+  eor r9, r9, r2
+  eor r10, r10, r2
+  eor r11, r11, r2
+  stmia r1, {r4-r11}
+  eor r4, r4, r2
+  eor r5, r5, r2
+  eor r6, r6, r2
+  eor r7, r7, r2
+  eor r8, r8, r2
+  eor r9, r9, r2
+  eor r10, r10, r2
+  eor r11, r11, r2
+  // We need to avoid invalid values in sp or lr (http://b/152210274).
+  eor r3, lr, r2
+  str r3, [r1, #(8 * 4)]
+  eor r3, sp, r2
+  str r3, [r1, #(9 * 4)]
 
   // Save floating-point registers.
   add r1, r0, #(_JB_FLOAT_BASE * 4)
@@ -182,11 +178,9 @@
   fmrx r1, fpscr
   str r1, [r0, #(_JB_FLOAT_STATE * 4)]
 
-#if USE_CHECKSUM
   // Calculate the checksum.
   m_calculate_checksum r12, r0, r2
   str r12, [r0, #(_JB_CHECKSUM * 4)]
-#endif
 
   mov r0, #0
   bx lr
@@ -201,14 +195,11 @@
   .cfi_rel_offset r1, 4
   .cfi_rel_offset lr, 8
 
-#if USE_CHECKSUM
   // Check the checksum before doing anything.
   m_calculate_checksum r12, r0, r3
   ldr r2, [r0, #(_JB_CHECKSUM * 4)]
-
   teq r2, r12
   bne __bionic_setjmp_checksum_mismatch
-#endif
 
   // Fetch the signal flag.
   ldr r1, [r0, #(_JB_SIGFLAG * 4)]
@@ -245,10 +236,21 @@
   // Restore core registers.
   add r2, r0, #(_JB_CORE_BASE * 4)
 
-  // ARM deprecates using sp in the register list for ldmia.
-  ldmia r2, {r4-r11, lr}
-  ldr sp, [r2, #(9 * 4)]
-  m_unmangle_registers r3
+  // Do all the easy registers in one go.
+  ldmia r2, {r4-r11}
+  eor r4, r4, r3
+  eor r5, r5, r3
+  eor r6, r6, r3
+  eor r7, r7, r3
+  eor r8, r8, r3
+  eor r9, r9, r3
+  eor r10, r10, r3
+  eor r11, r11, r3
+  // We need to avoid invalid values in sp or lr (http://b/152210274).
+  ldr r0, [r2, #(8 * 4)]
+  eor lr, r0, r3
+  ldr r0, [r2, #(9 * 4)]
+  eor sp, r0, r3
 
   // Save the return value/address and check the setjmp cookie.
   stmfd sp!, {r1, lr}
diff --git a/libc/arch-arm64/bionic/setjmp.S b/libc/arch-arm64/bionic/setjmp.S
index 351516f..d2fafdb 100644
--- a/libc/arch-arm64/bionic/setjmp.S
+++ b/libc/arch-arm64/bionic/setjmp.S
@@ -69,11 +69,8 @@
 #define _JB_CHECKSUM    (_JB_D8_D9 + 2)
 
 #define SCS_MASK (SCS_SIZE - 1)
-#define MANGLE_REGISTERS 1
-#define USE_CHECKSUM 1
 
 .macro m_mangle_registers reg, sp_reg
-#if MANGLE_REGISTERS
   eor x3, x3, \reg
   eor x19, x19, \reg
   eor x20, x20, \reg
@@ -88,7 +85,6 @@
   eor x29, x29, \reg
   eor x30, x30, \reg
   eor \sp_reg, \sp_reg, \reg
-#endif
 .endm
 
 .macro m_calculate_checksum dst, src, scratch
@@ -179,11 +175,9 @@
   stp d10, d11, [x0, #(_JB_D10_D11 * 8)]
   stp d8,  d9,  [x0, #(_JB_D8_D9   * 8)]
 
-#if USE_CHECKSUM
   // Calculate the checksum.
   m_calculate_checksum x12, x0, x2
   str x12, [x0, #(_JB_CHECKSUM * 8)]
-#endif
 
   mov w0, #0
   autiasp
@@ -194,14 +188,11 @@
 // void siglongjmp(sigjmp_buf env, int value);
 ENTRY(siglongjmp)
 __BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(siglongjmp)
-#if USE_CHECKSUM
   // Check the checksum before doing anything.
   m_calculate_checksum x12, x0, x2
   ldr x2, [x0, #(_JB_CHECKSUM * 8)]
-
   cmp x2, x12
   bne __bionic_setjmp_checksum_mismatch
-#endif
 
 #if __has_feature(hwaddress_sanitizer)
   stp x0, x30, [sp, #-16]!
diff --git a/libc/arch-common/bionic/crtbegin.c b/libc/arch-common/bionic/crtbegin.c
index 62878378..5f681c5 100644
--- a/libc/arch-common/bionic/crtbegin.c
+++ b/libc/arch-common/bionic/crtbegin.c
@@ -49,13 +49,15 @@
 #define POST "; .size _start, .-_start"
 
 #if defined(__aarch64__)
-__asm__(PRE "bti j; mov x0,sp; b _start_main" POST);
+__asm__(PRE "bti j; mov x29,#0; mov x30,#0; mov x0,sp; b _start_main" POST);
 #elif defined(__arm__)
-__asm__(PRE "mov r0,sp; b _start_main" POST);
+__asm__(PRE "mov fp,#0; mov lr,#0; mov r0,sp; b _start_main" POST);
 #elif defined(__i386__)
-__asm__(PRE "movl %esp,%eax; andl $~0xf,%esp; subl $12,%esp; pushl %eax; calll _start_main" POST);
+__asm__(PRE
+        "xorl %ebp,%ebp; movl %esp,%eax; andl $~0xf,%esp; subl $12,%esp; pushl %eax;"
+        "calll _start_main" POST);
 #elif defined(__x86_64__)
-__asm__(PRE "movq %rsp,%rdi; andq $~0xf,%rsp; callq _start_main" POST);
+__asm__(PRE "xorl %ebp, %ebp; movq %rsp,%rdi; andq $~0xf,%rsp; callq _start_main" POST);
 #else
 #error unsupported architecture
 #endif
diff --git a/libc/arch-x86/bionic/__bionic_clone.S b/libc/arch-x86/bionic/__bionic_clone.S
index b682b48..f0c58a0 100644
--- a/libc/arch-x86/bionic/__bionic_clone.S
+++ b/libc/arch-x86/bionic/__bionic_clone.S
@@ -45,6 +45,7 @@
 .L_bc_child:
         # We don't want anyone to unwind past this point.
         .cfi_undefined %eip
+        .cfi_undefined %ebp
         call    __start_thread
         hlt
 
diff --git a/libc/arch-x86/bionic/setjmp.S b/libc/arch-x86/bionic/setjmp.S
index 1e1ce58..1a3eb4b 100644
--- a/libc/arch-x86/bionic/setjmp.S
+++ b/libc/arch-x86/bionic/setjmp.S
@@ -57,19 +57,6 @@
 #define _JB_SIGFLAG 8
 #define _JB_CHECKSUM 9
 
-.macro m_mangle_registers reg
-  xorl \reg,%edx
-  xorl \reg,%ebx
-  xorl \reg,%esp
-  xorl \reg,%ebp
-  xorl \reg,%esi
-  xorl \reg,%edi
-.endm
-
-.macro m_unmangle_registers reg
-  m_mangle_registers \reg
-.endm
-
 .macro m_calculate_checksum dst, src
   movl $0, \dst
   .irp i,0,1,2,3,4,5
@@ -129,14 +116,17 @@
 
   // Save the callee-save registers.
   movl 0(%esp),%edx
-  m_mangle_registers %eax
-  movl %edx,(_JB_EDX * 4)(%ecx)
-  movl %ebx,(_JB_EBX * 4)(%ecx)
-  movl %esp,(_JB_ESP * 4)(%ecx)
-  movl %ebp,(_JB_EBP * 4)(%ecx)
-  movl %esi,(_JB_ESI * 4)(%ecx)
-  movl %edi,(_JB_EDI * 4)(%ecx)
-  m_unmangle_registers %eax
+
+.macro m_mangle_register reg, offset
+  movl \reg,(\offset * 4)(%ecx)
+  xorl %eax,(\offset * 4)(%ecx)
+.endm
+  m_mangle_register %edx, _JB_EDX
+  m_mangle_register %ebx, _JB_EBX
+  m_mangle_register %esp, _JB_ESP
+  m_mangle_register %ebp, _JB_EBP
+  m_mangle_register %esi, _JB_ESI
+  m_mangle_register %edi, _JB_EDI
 
   m_calculate_checksum %eax, %ecx
   movl %eax, (_JB_CHECKSUM * 4)(%ecx)
@@ -174,18 +164,26 @@
   movl 4(%esp),%edx
   movl 8(%esp),%eax
 
+  // Fetch the setjmp cookie and clear the signal flag bit.
   movl (_JB_SIGFLAG * 4)(%edx),%ecx
   andl $-2,%ecx
 
+  // Carefully unmangle esp/ebp without ever having an invalid value in the
+  // register (http://b/152210274).
+  movl (_JB_ESP * 4)(%edx),%edi
+  xorl %ecx,%edi
+  movl %edi,%esp
+  movl (_JB_EBP * 4)(%edx),%edi
+  xorl %ecx,%edi
+  movl %edi,%ebp
+
+  // The others don't matter as much, but we do need to finish using the cookie
+  // from %ecx before we clobber it, so we seed each register with the cookie.
   movl %ecx,%ebx
-  movl %ecx,%esp
-  movl %ecx,%ebp
   movl %ecx,%esi
   movl %ecx,%edi
   xorl (_JB_EDX * 4)(%edx),%ecx
   xorl (_JB_EBX * 4)(%edx),%ebx
-  xorl (_JB_ESP * 4)(%edx),%esp
-  xorl (_JB_EBP * 4)(%edx),%ebp
   xorl (_JB_ESI * 4)(%edx),%esi
   xorl (_JB_EDI * 4)(%edx),%edi
 
diff --git a/libc/arch-x86_64/bionic/setjmp.S b/libc/arch-x86_64/bionic/setjmp.S
index 1d34561..ba3f05f 100644
--- a/libc/arch-x86_64/bionic/setjmp.S
+++ b/libc/arch-x86_64/bionic/setjmp.S
@@ -64,25 +64,6 @@
 #define _JB_SIGMASK 9
 #define _JB_CHECKSUM 10
 
-#define MANGLE_REGISTERS 1
-
-.macro m_mangle_registers reg
-#if MANGLE_REGISTERS
-  xorq \reg,%rbx
-  xorq \reg,%rbp
-  xorq \reg,%r12
-  xorq \reg,%r13
-  xorq \reg,%r14
-  xorq \reg,%r15
-  xorq \reg,%rsp
-  xorq \reg,%r11
-#endif
-.endm
-
-.macro m_unmangle_registers reg
-  m_mangle_registers \reg
-.endm
-
 .macro m_calculate_checksum dst, src
   movq $0, \dst
   .irp i,0,1,2,3,4,5,6,7
@@ -127,20 +108,26 @@
   popq %rdi // Pop 'env'.
 
 2:
-  // Save the callee-save registers.
+  // Fetch the setjmp cookie and clear the signal flag bit.
   popq %rax
   andq $-2,%rax
   movq (%rsp),%r11
-  m_mangle_registers %rax
-  movq %rbx,(_JB_RBX * 8)(%rdi)
-  movq %rbp,(_JB_RBP * 8)(%rdi)
-  movq %r12,(_JB_R12 * 8)(%rdi)
-  movq %r13,(_JB_R13 * 8)(%rdi)
-  movq %r14,(_JB_R14 * 8)(%rdi)
-  movq %r15,(_JB_R15 * 8)(%rdi)
-  movq %rsp,(_JB_RSP * 8)(%rdi)
-  movq %r11,(_JB_PC  * 8)(%rdi)
-  m_unmangle_registers %rax
+
+  // Save the callee-save registers.
+
+.macro m_mangle_register reg, offset
+  movq \reg, (\offset * 8)(%rdi)
+  xorq %rax, (\offset * 8)(%rdi)  // %rax contains the cookie.
+.endm
+
+  m_mangle_register %rbx, _JB_RBX
+  m_mangle_register %rbp, _JB_RBP
+  m_mangle_register %r12, _JB_R12
+  m_mangle_register %r13, _JB_R13
+  m_mangle_register %r14, _JB_R14
+  m_mangle_register %r15, _JB_R15
+  m_mangle_register %rsp, _JB_RSP
+  m_mangle_register %r11, _JB_PC
 
   m_calculate_checksum %rax, %rdi
   movq %rax, (_JB_CHECKSUM * 8)(%rdi)
@@ -179,15 +166,22 @@
   popq %rax // Pop 'value'.
 
   // Restore the callee-save registers.
-  movq (_JB_RBX * 8)(%r12),%rbx
-  movq (_JB_RBP * 8)(%r12),%rbp
-  movq (_JB_R13 * 8)(%r12),%r13
-  movq (_JB_R14 * 8)(%r12),%r14
-  movq (_JB_R15 * 8)(%r12),%r15
-  movq (_JB_RSP * 8)(%r12),%rsp
-  movq (_JB_PC  * 8)(%r12),%r11
-  movq (_JB_R12 * 8)(%r12),%r12
-  m_unmangle_registers %rcx
+
+.macro m_unmangle_register reg, offset
+  movq (\offset * 8)(%r12), %rdx  // Clobbers rdx.
+  xorq %rcx, %rdx                 // %rcx contains the cookie.
+  // Now it's safe to overwrite the register (http://b/152210274).
+  movq %rdx, \reg
+.endm
+
+  m_unmangle_register %rbx, _JB_RBX
+  m_unmangle_register %rbp, _JB_RBP
+  m_unmangle_register %r13, _JB_R13
+  m_unmangle_register %r14, _JB_R14
+  m_unmangle_register %r15, _JB_R15
+  m_unmangle_register %rsp, _JB_RSP
+  m_unmangle_register %r11, _JB_PC
+  m_unmangle_register %r12, _JB_R12
 
   // Check the cookie.
   pushq %rax
diff --git a/libc/bionic/bind.cpp b/libc/bionic/bind.cpp
deleted file mode 100644
index 79e8020..0000000
--- a/libc/bionic/bind.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-// b/170214442: Intercept bind calls on NETLINK_ROUTE sockets.
-// This entire file will be reverted before release.
-
-#include <async_safe/log.h>
-#include <errno.h>
-#include <linux/rtnetlink.h>
-#include <string.h>
-#include <sys/socket.h>
-
-#include "bionic_appcompat.h"
-
-extern "C" int __bind(int fd, const struct sockaddr* addr, socklen_t addr_length);
-
-int bind(int fd, const struct sockaddr* addr, socklen_t addr_length) {
-  if (should_apply_soft_mac_bind_restrictions()) {
-    int sock_domain, sock_protocol;
-    socklen_t sock_domain_length = sizeof(sock_domain);
-    socklen_t sock_protocol_length = sizeof(sock_protocol);
-    if (getsockopt(fd, SOL_SOCKET, SO_DOMAIN, &sock_domain, &sock_domain_length) < 0 ||
-        getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &sock_protocol, &sock_protocol_length) < 0) {
-      async_safe_format_log(ANDROID_LOG_ERROR, "mac-restrictions",
-                            "Could not get socket type/protocol: %s", strerror(errno));
-    } else if (AF_NETLINK == sock_domain && NETLINK_ROUTE == sock_protocol) {
-      char package_name[MAX_PACKAGE_NAME_LENGTH + 1];
-      get_package_name(package_name, sizeof(package_name));
-      async_safe_format_log(
-          ANDROID_LOG_ERROR, "mac-restrictions",
-          "%s tried to call bind() on a NETLINK_ROUTE socket, which is not allowed. Please follow "
-          "instructions at go/netlink-bug if this app behaves incorrectly.",
-          package_name);
-      errno = EACCES;
-      return -1;
-    }
-  }
-
-  return __bind(fd, addr, addr_length);
-}
diff --git a/libc/bionic/bionic_appcompat.cpp b/libc/bionic/bionic_appcompat.cpp
deleted file mode 100644
index dcca0da..0000000
--- a/libc/bionic/bionic_appcompat.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-// b/170214442: Intercept bind calls on NETLINK_ROUTE sockets and getifaddrs() calls.
-// This entire file will be reverted before release.
-
-#include <async_safe/log.h>
-#include <cutils/misc.h>
-#include <fcntl.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "bionic_appcompat.h"
-
-bool should_apply_soft_mac_restrictions(const char* const allowlist[]) {
-  if (getuid() < FIRST_APPLICATION_UID) {
-    // System app. No restrictions should be applied.
-    return false;
-  }
-  if (android_get_application_target_sdk_version() >= __ANDROID_API_R__) {
-    // Restrictions already applied by SELinux. Behave as normally.
-    return false;
-  }
-
-  char package_name[MAX_PACKAGE_NAME_LENGTH + 1];
-  if (get_package_name(package_name, sizeof(package_name)) < 0) {
-    // Error in getting own package name. Apply restrictions by default.
-    async_safe_format_log(ANDROID_LOG_ERROR, "mac-restrictions",
-                          "Could not determine own package name for uid %d", getuid());
-    return true;
-  }
-  for (int i = 0; allowlist[i] != nullptr; i++) {
-    if (strcmp(package_name, allowlist[i]) == 0) {
-      async_safe_format_log(ANDROID_LOG_WARN, "mac-restrictions",
-                            "Temporarily allowing %s to bypass MAC address restrictions.",
-                            package_name);
-      return false;
-    }
-  }
-  return true;
-}
-
-bool should_apply_soft_mac_bind_restrictions() {
-  return should_apply_soft_mac_restrictions(soft_mac_bind_allowlist);
-}
-
-bool should_apply_soft_mac_getlink_restrictions() {
-  return should_apply_soft_mac_restrictions(soft_mac_getlink_allowlist);
-}
-
-int get_package_name(char* buffer, const int bufferlen) {
-  int file = open("/proc/self/cmdline", O_RDONLY | O_CLOEXEC);
-  if (file < 0) {
-    return file;
-  }
-
-  ssize_t len = read(file, buffer, bufferlen - 1);
-  if (len < 0) {
-    close(file);
-    return -1;
-  }
-  buffer[len] = 0;
-
-  close(file);
-  return 0;
-}
diff --git a/libc/bionic/fdsan.cpp b/libc/bionic/fdsan.cpp
index 043510c..48e8674 100644
--- a/libc/bionic/fdsan.cpp
+++ b/libc/bionic/fdsan.cpp
@@ -137,14 +137,6 @@
     return;
   }
 
-  // Lots of code will (sensibly) fork, call close on all of their fds,
-  // and then exec. Compare our cached pid value against the real one to detect
-  // this scenario and permit it.
-  pid_t cached_pid = __get_cached_pid();
-  if (cached_pid == 0 || cached_pid != syscall(__NR_getpid)) {
-    return;
-  }
-
   struct {
     size_t size;
     char buf[512];
diff --git a/libc/bionic/fdtrack.cpp b/libc/bionic/fdtrack.cpp
index 1123512..89a208f 100644
--- a/libc/bionic/fdtrack.cpp
+++ b/libc/bionic/fdtrack.cpp
@@ -37,8 +37,14 @@
 
 _Atomic(android_fdtrack_hook_t) __android_fdtrack_hook;
 
+bool __android_fdtrack_globally_disabled = false;
+
+void android_fdtrack_set_globally_enabled(bool new_value) {
+  __android_fdtrack_globally_disabled = !new_value;
+}
+
 bool android_fdtrack_get_enabled() {
-  return !__get_bionic_tls().fdtrack_disabled;
+  return !__get_bionic_tls().fdtrack_disabled && !__android_fdtrack_globally_disabled;
 }
 
 bool android_fdtrack_set_enabled(bool new_value) {
diff --git a/libc/bionic/fork.cpp b/libc/bionic/fork.cpp
index 8c5cf2b..d432c6d 100644
--- a/libc/bionic/fork.cpp
+++ b/libc/bionic/fork.cpp
@@ -31,6 +31,7 @@
 #include <android/fdsan.h>
 
 #include "private/bionic_defs.h"
+#include "private/bionic_fdtrack.h"
 #include "pthread_internal.h"
 
 __BIONIC_WEAK_FOR_NATIVE_BRIDGE_INLINE
@@ -55,9 +56,10 @@
   int result = __clone_for_fork();
 
   if (result == 0) {
-    // Disable fdsan post-fork, so we don't falsely trigger on processes that
+    // Disable fdsan and fdtrack post-fork, so we don't falsely trigger on processes that
     // fork, close all of their fds, and then exec.
     android_fdsan_set_error_level(ANDROID_FDSAN_ERROR_LEVEL_DISABLED);
+    android_fdtrack_set_globally_enabled(false);
 
     // Reset the stack_and_tls VMA name so it doesn't end with a tid from the
     // parent process.
diff --git a/libc/bionic/ifaddrs.cpp b/libc/bionic/ifaddrs.cpp
index 22ecdb4..1536333 100644
--- a/libc/bionic/ifaddrs.cpp
+++ b/libc/bionic/ifaddrs.cpp
@@ -42,7 +42,6 @@
 
 #include "private/ErrnoRestorer.h"
 
-#include "bionic_appcompat.h"
 #include "bionic_netlink.h"
 
 // The public ifaddrs struct is full of pointers. Rather than track several
@@ -311,12 +310,9 @@
   // - System apps
   // - Apps with a target SDK version lower than R
   bool getlink_success = false;
-  if (!should_apply_soft_mac_getlink_restrictions()) {
+  if (getuid() < FIRST_APPLICATION_UID ||
+      android_get_application_target_sdk_version() < __ANDROID_API_R__) {
     getlink_success = nc.SendRequest(RTM_GETLINK) && nc.ReadResponses(__getifaddrs_callback, out);
-  } else if (android_get_application_target_sdk_version() < __ANDROID_API_R__) {
-    async_safe_format_log(ANDROID_LOG_WARN, "mac-restrictions",
-                          "ifaddr no longer returns link info. Please follow instructions at "
-                          "go/netlink-bug if this app behaves incorrectly.");
   }
   bool getaddr_success =
     nc.SendRequest(RTM_GETADDR) && nc.ReadResponses(__getifaddrs_callback, out);
diff --git a/libc/bionic/malloc_heapprofd.cpp b/libc/bionic/malloc_heapprofd.cpp
index 198bcba..741b45e 100644
--- a/libc/bionic/malloc_heapprofd.cpp
+++ b/libc/bionic/malloc_heapprofd.cpp
@@ -325,12 +325,12 @@
 
 static void CommonInstallHooks(libc_globals* globals) {
   void* impl_handle = atomic_load(&gHeapprofdHandle);
-  bool reusing_handle = impl_handle != nullptr;
-  if (!reusing_handle) {
+  if (impl_handle == nullptr) {
     impl_handle = LoadSharedLibrary(kHeapprofdSharedLib, kHeapprofdPrefix, &globals->malloc_dispatch_table);
     if (impl_handle == nullptr) {
       return;
     }
+    atomic_store(&gHeapprofdHandle, impl_handle);
   } else if (!InitSharedLibrary(impl_handle, kHeapprofdSharedLib, kHeapprofdPrefix, &globals->malloc_dispatch_table)) {
     return;
   }
@@ -341,11 +341,7 @@
   // MaybeModifyGlobals locks at this point.
   atomic_store(&gPreviousDefaultDispatchTable, GetDefaultDispatchTable());
 
-  if (FinishInstallHooks(globals, nullptr, kHeapprofdPrefix)) {
-    atomic_store(&gHeapprofdHandle, impl_handle);
-  } else if (!reusing_handle) {
-    dlclose(impl_handle);
-  }
+  FinishInstallHooks(globals, nullptr, kHeapprofdPrefix);
 }
 
 void HeapprofdInstallHooksAtInit(libc_globals* globals) {
diff --git a/libc/bionic/pthread_create.cpp b/libc/bionic/pthread_create.cpp
index 206d5fd..46d9e86 100644
--- a/libc/bionic/pthread_create.cpp
+++ b/libc/bionic/pthread_create.cpp
@@ -30,6 +30,7 @@
 
 #include <errno.h>
 #include <string.h>
+#include <sys/auxv.h>
 #include <sys/mman.h>
 #include <sys/prctl.h>
 #include <sys/random.h>
@@ -344,6 +345,16 @@
   __set_stack_and_tls_vma_name(false);
   __init_additional_stacks(thread);
   __rt_sigprocmask(SIG_SETMASK, &thread->start_mask, nullptr, sizeof(thread->start_mask));
+#ifdef __aarch64__
+  // Chrome's sandbox prevents this prctl, so only reset IA if the target SDK level is high enough.
+  // Furthermore, processes loaded from vendor partitions may have their own sandboxes that would
+  // reject the prctl. Because no devices launched with PAC enabled before S, we can avoid issues on
+  // upgrading devices by checking for PAC support before issuing the prctl.
+  static const bool pac_supported = getauxval(AT_HWCAP) & HWCAP_PACA;
+  if (pac_supported && android_get_application_target_sdk_version() >= __ANDROID_API_S__) {
+    prctl(PR_PAC_RESET_KEYS, PR_PAC_APIAKEY, 0, 0, 0);
+  }
+#endif
 
   void* result = thread->start_routine(thread->start_routine_arg);
   pthread_exit(result);
diff --git a/libc/dns/include/resolv_private.h b/libc/dns/include/resolv_private.h
index 77b03bf..3054555 100644
--- a/libc/dns/include/resolv_private.h
+++ b/libc/dns/include/resolv_private.h
@@ -51,8 +51,7 @@
  *	Id: resolv.h,v 1.7.2.11.4.2 2004/06/25 00:41:05 marka Exp
  */
 
-#ifndef _RESOLV_PRIVATE_H_
-#define	_RESOLV_PRIVATE_H_
+#pragma once
 
 #include <sys/cdefs.h>
 
@@ -63,6 +62,8 @@
 #include <net/if.h>
 #include <time.h>
 
+__BEGIN_DECLS
+
 // Linux defines MAXHOSTNAMELEN as 64, while the domain name limit in
 // RFC 1034 and RFC 1035 is 255 octets.
 #ifdef MAXHOSTNAMELEN
@@ -293,8 +294,6 @@
 /*			0x00010000	*/
 
 /* Things involving an internal (static) resolver context. */
-__BEGIN_DECLS
-
 __LIBC_HIDDEN__ extern struct __res_state *__res_get_state(void);
 __LIBC_HIDDEN__ extern void __res_put_state(struct __res_state *);
 
@@ -307,8 +306,6 @@
 #define _res (*__res_state())
 #endif
 
-__END_DECLS
-
 #ifndef __BIND_NOSTATIC
 #define fp_nquery		__fp_nquery
 #define fp_query		__fp_query
@@ -319,7 +316,6 @@
 #define res_isourserver		__res_isourserver
 #define	res_querydomain		__res_querydomain
 #define res_send		__res_send
-#define res_sendsigned		__res_sendsigned
 
 #ifdef BIND_RES_POSIX3
 #define	dn_expand	__dn_expand
@@ -329,7 +325,6 @@
 #define	res_mkquery	__res_mkquery
 #endif
 
-__BEGIN_DECLS
 void		fp_nquery(const u_char *, int, FILE *);
 void		fp_query(const u_char *, FILE *);
 const char *	hostalias(const char *);
@@ -343,8 +338,6 @@
 int		res_querydomain(const char *, const char *, int, int, u_char *, int);
 int		res_search(const char *, int, int, u_char *, int);
 int		res_send(const u_char *, int, u_char *, int);
-int		res_sendsigned(const u_char *, int, ns_tsig_key *, u_char *, int);
-__END_DECLS
 #endif
 
 #if !defined(SHARED_LIBBIND) || defined(LIB)
@@ -424,7 +417,6 @@
 #define	res_send_setrhook	__res_send_setrhook
 #define	res_servicename		__res_servicename
 #define	res_servicenumber	__res_servicenumber
-__BEGIN_DECLS
 int		res_hnok(const char *);
 int		res_ownok(const char *);
 int		res_mailok(const char *);
@@ -532,5 +524,3 @@
 int ns_name_labels(ns_nname_ct, size_t);
 
 __END_DECLS
-
-#endif /* !_RESOLV_PRIVATE_H_ */
diff --git a/libc/dns/include/resolv_static.h b/libc/dns/include/resolv_static.h
index 8f2a095..83a435a 100644
--- a/libc/dns/include/resolv_static.h
+++ b/libc/dns/include/resolv_static.h
@@ -1,7 +1,7 @@
-#ifndef _RESOLV_STATIC_H
-#define _RESOLV_STATIC_H
+#pragma once
 
 #include <netdb.h>
+#include <sys/cdefs.h>
 
 /* this structure contains all the variables that were declared
  * 'static' in the original NetBSD resolver code.
@@ -15,18 +15,20 @@
 #define	MAXALIASES	35
 #define	MAXADDRS	35
 
-typedef struct res_static {
-    char*           h_addr_ptrs[MAXADDRS + 1];
-    char*           host_aliases[MAXALIASES];
-    char            hostbuf[8*1024];
-    u_int32_t       host_addr[16 / sizeof(u_int32_t)];  /* IPv4 or IPv6 */
-    FILE*           hostf;
-    int             stayopen;
-    const char*     servent_ptr;
-    struct servent  servent;
-    struct hostent  host;
-} *res_static;
+__BEGIN_DECLS
 
-extern res_static __res_get_static(void);
+struct res_static {
+  char* h_addr_ptrs[MAXADDRS + 1];
+  char* host_aliases[MAXALIASES];
+  char hostbuf[8 * 1024];
+  u_int32_t host_addr[16 / sizeof(u_int32_t)]; /* IPv4 or IPv6 */
+  FILE* hostf;
+  int stayopen;
+  const char* servent_ptr;
+  struct servent servent;
+  struct hostent host;
+};
 
-#endif /* _RESOLV_STATIC_H */
+struct res_static* __res_get_static(void);
+
+__END_DECLS
diff --git a/libc/dns/net/gethnamaddr.c b/libc/dns/net/gethnamaddr.c
index f8212a2..add124f 100644
--- a/libc/dns/net/gethnamaddr.c
+++ b/libc/dns/net/gethnamaddr.c
@@ -1537,7 +1537,7 @@
 gethostbyname(const char *name)
 {
 	struct hostent *result = NULL;
-	res_static rs = __res_get_static(); /* Use res_static to provide thread-safety. */
+	struct res_static* rs = __res_get_static();
 
 	gethostbyname_r(name, &rs->host, rs->hostbuf, sizeof(rs->hostbuf), &result, &h_errno);
 	return result;
@@ -1547,7 +1547,7 @@
 gethostbyname2(const char *name, int af)
 {
 	struct hostent *result = NULL;
-	res_static rs = __res_get_static(); /* Use res_static to provide thread-safety. */
+	struct res_static* rs = __res_get_static();
 
 	gethostbyname2_r(name, af, &rs->host, rs->hostbuf, sizeof(rs->hostbuf), &result, &h_errno);
 	return result;
@@ -1583,7 +1583,7 @@
 	res_state res = __res_get_state();
 	if (res == NULL)
 		return NULL;
-	res_static rs = __res_get_static(); /* Use res_static to provide thread-safety. */
+	struct res_static* rs = __res_get_static();
 	hp = gethostbyname_internal(name, af, res, &rs->host, rs->hostbuf, sizeof(rs->hostbuf),
 	                            &h_errno, netcontext);
 	__res_put_state(res);
@@ -1615,7 +1615,7 @@
 android_gethostbyaddrfornetcontext_proxy(const void* addr, socklen_t len, int af,
                                   const struct android_net_context *netcontext)
 {
-	res_static rs = __res_get_static(); /* Use res_static to provide thread-safety. */
+	struct res_static* rs = __res_get_static();
 	return android_gethostbyaddrfornetcontext_proxy_internal(addr, len, af, &rs->host, rs->hostbuf,
                                                     sizeof(rs->hostbuf), &h_errno, netcontext);
 }
@@ -1623,7 +1623,7 @@
 struct hostent *
 gethostent(void)
 {
-  res_static  rs = __res_get_static();
+  struct res_static* rs = __res_get_static();
 	if (!rs->hostf) {
 	  sethostent_r(&rs->hostf);
 	  if (!rs->hostf) {
diff --git a/libc/dns/net/getservent.c b/libc/dns/net/getservent.c
index 03add59..6a50d23 100644
--- a/libc/dns/net/getservent.c
+++ b/libc/dns/net/getservent.c
@@ -35,7 +35,7 @@
 #include "resolv_static.h"
 #include "services.h"
 
-struct servent* getservent_r(res_static rs) {
+struct servent* getservent_r(struct res_static* rs) {
     const char*  p;
     const char*  q;
     int          namelen;
@@ -109,17 +109,17 @@
 }
 
 void endservent(void) {
-  res_static rs = __res_get_static();
+  struct res_static* rs = __res_get_static();
   if (rs) rs->servent_ptr = NULL;
 }
 
 struct servent* getservent(void) {
-  res_static rs = __res_get_static();
+  struct res_static* rs = __res_get_static();
   return rs ? getservent_r(rs) : NULL;
 }
 
 struct servent* getservbyname(const char* name, const char* proto) {
-  res_static rs = __res_get_static();
+  struct res_static* rs = __res_get_static();
   if (rs == NULL) return NULL;
 
   const char* old_servent_ptr = rs->servent_ptr;
@@ -135,7 +135,7 @@
 }
 
 struct servent* getservbyport(int port, const char* proto) {
-  res_static rs = __res_get_static();
+  struct res_static* rs = __res_get_static();
   if (rs == NULL) return NULL;
 
   const char* old_servent_ptr = rs->servent_ptr;
diff --git a/libc/dns/net/sethostent.c b/libc/dns/net/sethostent.c
index b2b0132..483105a 100644
--- a/libc/dns/net/sethostent.c
+++ b/libc/dns/net/sethostent.c
@@ -65,14 +65,14 @@
 /*ARGSUSED*/
 sethostent(int stayopen)
 {
-	res_static rs = __res_get_static();
+	struct res_static* rs = __res_get_static();
 	if (rs) sethostent_r(&rs->hostf);
 }
 
 void
 endhostent(void)
 {
-	res_static rs = __res_get_static();
+	struct res_static* rs = __res_get_static();
 	if (rs) endhostent_r(&rs->hostf);
 }
 
diff --git a/libc/dns/resolv/res_data.c b/libc/dns/resolv/res_data.c
deleted file mode 100644
index 9bc02e7..0000000
--- a/libc/dns/resolv/res_data.c
+++ /dev/null
@@ -1,327 +0,0 @@
-/*	$NetBSD: res_data.c,v 1.8 2004/06/09 18:07:03 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * Copyright (c) 1995-1999 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/cdefs.h>
-#if defined(LIBC_SCCS) && !defined(lint)
-#ifdef notdef
-static const char rcsid[] = "Id: res_data.c,v 1.1.206.2 2004/03/16 12:34:18 marka Exp";
-#else
-__RCSID("$NetBSD: res_data.c,v 1.8 2004/06/09 18:07:03 christos Exp $");
-#endif
-#endif /* LIBC_SCCS and not lint */
-
-
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <ctype.h>
-#include <netdb.h>
-#include "resolv_private.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-
-__LIBC_HIDDEN__
-const char * const _res_opcodes[] = {
-	"QUERY",
-	"IQUERY",
-	"CQUERYM",
-	"CQUERYU",	/* experimental */
-	"NOTIFY",	/* experimental */
-	"UPDATE",
-	"6",
-	"7",
-	"8",
-	"9",
-	"10",
-	"11",
-	"12",
-	"13",
-	"ZONEINIT",
-	"ZONEREF",
-};
-
-#ifdef BIND_UPDATE
-const char * const _res_sectioncodes[] = {
-	"ZONE",
-	"PREREQUISITES",
-	"UPDATE",
-	"ADDITIONAL",
-};
-#endif
-
-#ifndef __BIND_NOSTATIC
-extern struct __res_state _nres;
-
-/* Proto. */
-
-int  res_ourserver_p(const res_state, const struct sockaddr *);
-
-#define res_need_init()   ((_nres.options & RES_INIT) == 0U)
-
-int
-res_init(void) {
-	int rv;
-	extern int __res_vinit(res_state, int);
-#ifdef COMPAT__RES
-	/*
-	 * Compatibility with program that were accessing _res directly
-	 * to set options. We keep another struct res that is the same
-	 * size as the original res structure, and then copy fields to
-	 * it so that we achieve the same initialization
-	 */
-	extern void *__res_get_old_state(void);
-	extern void __res_put_old_state(void *);
-	res_state ores = __res_get_old_state();
-
-	if (ores->options != 0)
-		_nres.options = ores->options;
-	if (ores->retrans != 0)
-		_nres.retrans = ores->retrans;
-	if (ores->retry != 0)
-		_nres.retry = ores->retry;
-#endif
-
-	/*
-	 * These three fields used to be statically initialized.  This made
-	 * it hard to use this code in a shared library.  It is necessary,
-	 * now that we're doing dynamic initialization here, that we preserve
-	 * the old semantics: if an application modifies one of these three
-	 * fields of _res before res_init() is called, res_init() will not
-	 * alter them.  Of course, if an application is setting them to
-	 * _zero_ before calling res_init(), hoping to override what used
-	 * to be the static default, we can't detect it and unexpected results
-	 * will follow.  Zero for any of these fields would make no sense,
-	 * so one can safely assume that the applications were already getting
-	 * unexpected results.
-	 *
-	 * _nres.options is tricky since some apps were known to diddle the bits
-	 * before res_init() was first called. We can't replicate that semantic
-	 * with dynamic initialization (they may have turned bits off that are
-	 * set in RES_DEFAULT).  Our solution is to declare such applications
-	 * "broken".  They could fool us by setting RES_INIT but none do (yet).
-	 */
-	if (!_nres.retrans)
-		_nres.retrans = RES_TIMEOUT;
-	if (!_nres.retry)
-		_nres.retry = 4;
-	if (!(_nres.options & RES_INIT))
-		_nres.options = RES_DEFAULT;
-
-	/*
-	 * This one used to initialize implicitly to zero, so unless the app
-	 * has set it to something in particular, we can randomize it now.
-	 */
-	if (!_nres.id)
-		_nres.id = res_randomid();
-
-	rv = __res_vinit(&_nres, 1);
-#ifdef COMPAT__RES
-	__res_put_old_state(&_nres);
-#endif
-	return rv;
-}
-
-void
-p_query(const u_char *msg) {
-	fp_query(msg, stdout);
-}
-
-void
-fp_query(const u_char *msg, FILE *file) {
-	fp_nquery(msg, PACKETSZ, file);
-}
-
-void
-fp_nquery(const u_char *msg, int len, FILE *file) {
-	if (res_need_init() && res_init() == -1)
-		return;
-
-	res_pquery(&_nres, msg, len, file);
-}
-
-int
-res_mkquery(int op,			/* opcode of query */
-	    const char *dname,		/* domain name */
-	    int class, int type,	/* class and type of query */
-	    const u_char *data,		/* resource record data */
-	    int datalen,		/* length of data */
-	    const u_char *newrr_in,	/* new rr for modify or append */
-	    u_char *buf,		/* buffer to put query */
-	    int buflen)			/* size of buffer */
-{
-	if (res_need_init() && res_init() == -1) {
-		RES_SET_H_ERRNO(&_nres, NETDB_INTERNAL);
-		return (-1);
-	}
-	return (res_nmkquery(&_nres, op, dname, class, type,
-			     data, datalen,
-			     newrr_in, buf, buflen));
-}
-
-#ifdef _LIBRESOLV
-int
-res_mkupdate(ns_updrec *rrecp_in, u_char *buf, int buflen) {
-	if (res_need_init() && res_init() == -1) {
-		RES_SET_H_ERRNO(&_nres, NETDB_INTERNAL);
-		return (-1);
-	}
-
-	return (res_nmkupdate(&_nres, rrecp_in, buf, buflen));
-}
-#endif
-
-int
-res_query(const char *name,	/* domain name */
-	  int class, int type,	/* class and type of query */
-	  u_char *answer,	/* buffer to put answer */
-	  int anslen)		/* size of answer buffer */
-{
-	if (res_need_init() && res_init() == -1) {
-		RES_SET_H_ERRNO(&_nres, NETDB_INTERNAL);
-		return (-1);
-	}
-	return (res_nquery(&_nres, name, class, type, answer, anslen));
-}
-
-void
-res_send_setqhook(res_send_qhook hook) {
-	_nres.qhook = hook;
-}
-
-void
-res_send_setrhook(res_send_rhook hook) {
-	_nres.rhook = hook;
-}
-
-int
-res_isourserver(const struct sockaddr_in *inp) {
-	return (res_ourserver_p(&_nres, (const struct sockaddr *)(const void *)inp));
-}
-
-int
-res_send(const u_char *buf, int buflen, u_char *ans, int anssiz) {
-	if (res_need_init() && res_init() == -1) {
-		/* errno should have been set by res_init() in this case. */
-		return (-1);
-	}
-
-	return (res_nsend(&_nres, buf, buflen, ans, anssiz));
-}
-
-#ifdef _LIBRESOLV
-int
-res_sendsigned(const u_char *buf, int buflen, ns_tsig_key *key,
-	       u_char *ans, int anssiz)
-{
-	if (res_need_init() && res_init() == -1) {
-		/* errno should have been set by res_init() in this case. */
-		return (-1);
-	}
-
-	return (res_nsendsigned(&_nres, buf, buflen, key, ans, anssiz));
-}
-#endif
-
-void
-res_close(void) {
-	res_nclose(&_nres);
-}
-
-#ifdef _LIBRESOLV
-int
-res_update(ns_updrec *rrecp_in) {
-	if (res_need_init() && res_init() == -1) {
-		RES_SET_H_ERRNO(&_nres, NETDB_INTERNAL);
-		return (-1);
-	}
-
-	return (res_nupdate(&_nres, rrecp_in, NULL));
-}
-#endif
-
-int
-res_search(const char *name,	/* domain name */
-	   int class, int type,	/* class and type of query */
-	   u_char *answer,	/* buffer to put answer */
-	   int anslen)		/* size of answer */
-{
-	if (res_need_init() && res_init() == -1) {
-		RES_SET_H_ERRNO(&_nres, NETDB_INTERNAL);
-		return (-1);
-	}
-
-	return (res_nsearch(&_nres, name, class, type, answer, anslen));
-}
-
-int
-res_querydomain(const char *name,
-		const char *domain,
-		int class, int type,	/* class and type of query */
-		u_char *answer,		/* buffer to put answer */
-		int anslen)		/* size of answer */
-{
-	if (res_need_init() && res_init() == -1) {
-		RES_SET_H_ERRNO(&_nres, NETDB_INTERNAL);
-		return (-1);
-	}
-
-	return (res_nquerydomain(&_nres, name, domain,
-				 class, type,
-				 answer, anslen));
-}
-
-int
-res_opt(int a, u_char *b, int c, int d)
-{
-	return res_nopt(&_nres, a, b, c, d);
-}
-
-const char *
-hostalias(const char *name) {
-	return NULL;
-}
-
-#ifdef ultrix
-int
-local_hostname_length(const char *hostname) {
-	int len_host, len_domain;
-
-	if (!*_nres.defdname)
-		res_init();
-	len_host = strlen(hostname);
-	len_domain = strlen(_nres.defdname);
-	if (len_host > len_domain &&
-	    !strcasecmp(hostname + len_host - len_domain, _nres.defdname) &&
-	    hostname[len_host - len_domain - 1] == '.')
-		return (len_host - len_domain - 1);
-	return (0);
-}
-#endif /*ultrix*/
-
-#endif
diff --git a/libc/dns/resolv/res_data.cpp b/libc/dns/resolv/res_data.cpp
new file mode 100644
index 0000000..22d9f7b
--- /dev/null
+++ b/libc/dns/resolv/res_data.cpp
@@ -0,0 +1,157 @@
+/*  $NetBSD: res_data.c,v 1.8 2004/06/09 18:07:03 christos Exp $  */
+
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1995-1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "resolv_private.h"
+
+#include <pthread.h>
+
+extern "C" int res_ourserver_p(const res_state, const struct sockaddr*);
+extern "C" int __res_vinit(res_state, int);
+
+class GlobalStateAccessor {
+ public:
+  GlobalStateAccessor() {
+    pthread_mutex_lock(&mutex);
+    if (!initialized) {
+      init();
+      initialized = true;
+    }
+  }
+
+  ~GlobalStateAccessor() {
+    pthread_mutex_unlock(&mutex);
+  }
+
+  __res_state* get() {
+    return &state;
+  }
+
+  int init();
+
+ private:
+  static __res_state state;
+  static bool initialized;
+  static pthread_mutex_t mutex;
+};
+__res_state GlobalStateAccessor::state;
+bool GlobalStateAccessor::initialized = false;
+pthread_mutex_t GlobalStateAccessor::mutex = PTHREAD_MUTEX_INITIALIZER;
+
+int GlobalStateAccessor::init() {
+  // These three fields used to be statically initialized.  This made
+  // it hard to use this code in a shared library.  It is necessary,
+  // now that we're doing dynamic initialization here, that we preserve
+  // the old semantics: if an application modifies one of these three
+  // fields of _res before res_init() is called, res_init() will not
+  // alter them.  Of course, if an application is setting them to
+  // _zero_ before calling res_init(), hoping to override what used
+  // to be the static default, we can't detect it and unexpected results
+  // will follow.  Zero for any of these fields would make no sense,
+  // so one can safely assume that the applications were already getting
+  // unexpected results.
+  // g_nres.options is tricky since some apps were known to diddle the bits
+  // before res_init() was first called. We can't replicate that semantic
+  // with dynamic initialization (they may have turned bits off that are
+  // set in RES_DEFAULT).  Our solution is to declare such applications
+  // "broken".  They could fool us by setting RES_INIT but none do (yet).
+  if (!state.retrans) state.retrans = RES_TIMEOUT;
+  if (!state.retry) state.retry = 4;
+  if (!(state.options & RES_INIT)) state.options = RES_DEFAULT;
+
+  // This one used to initialize implicitly to zero, so unless the app
+  // has set it to something in particular, we can randomize it now.
+  if (!state.id) state.id = res_randomid();
+
+  return __res_vinit(&state, 1);
+}
+
+int res_init(void) {
+  GlobalStateAccessor gsa;
+  return gsa.init();
+}
+
+void p_query(const u_char* msg) {
+  fp_query(msg, stdout);
+}
+
+void fp_query(const u_char* msg, FILE* file) {
+  fp_nquery(msg, PACKETSZ, file);
+}
+
+void fp_nquery(const u_char* msg, int len, FILE* file) {
+  GlobalStateAccessor gsa;
+  res_pquery(gsa.get(), msg, len, file);
+}
+
+int
+res_mkquery(int op, const char* dname, int klass, int type, const u_char* data,
+            int datalen, const u_char* newrr_in, u_char* buf, int buflen) {
+  GlobalStateAccessor gsa;
+  return res_nmkquery(gsa.get(), op, dname, klass, type, data, datalen, newrr_in, buf, buflen);
+}
+
+int res_query(const char* name, int klass, int type, u_char* answer, int anslen) {
+  GlobalStateAccessor gsa;
+  return res_nquery(gsa.get(), name, klass, type, answer, anslen);
+}
+
+void res_send_setqhook(res_send_qhook hook) {
+  GlobalStateAccessor gsa;
+  gsa.get()->qhook = hook;
+}
+
+void res_send_setrhook(res_send_rhook hook) {
+  GlobalStateAccessor gsa;
+  gsa.get()->rhook = hook;
+}
+
+int res_isourserver(const struct sockaddr_in* inp) {
+  GlobalStateAccessor gsa;
+  return res_ourserver_p(gsa.get(), reinterpret_cast<const sockaddr*>(inp));
+}
+
+int res_send(const u_char* buf, int buflen, u_char* ans, int anssiz) {
+  GlobalStateAccessor gsa;
+  return res_nsend(gsa.get(), buf, buflen, ans, anssiz);
+}
+
+void res_close(void) {
+  GlobalStateAccessor gsa;
+  res_nclose(gsa.get());
+}
+
+int res_search(const char* name, int klass, int type, u_char* answer, int anslen) {
+  GlobalStateAccessor gsa;
+  return res_nsearch(gsa.get(), name, klass, type, answer, anslen);
+}
+
+int res_querydomain(const char* name, const char* domain, int klass, int type, u_char* answer,
+                    int anslen) {
+  GlobalStateAccessor gsa;
+  return res_nquerydomain(gsa.get(), name, domain, klass, type, answer, anslen);
+}
+
+int res_opt(int a, u_char* b, int c, int d) {
+  GlobalStateAccessor gsa;
+  return res_nopt(gsa.get(), a, b, c, d);
+}
+
+const char* hostalias(const char* name) {
+  return NULL;
+}
diff --git a/libc/dns/resolv/res_debug.c b/libc/dns/resolv/res_debug.c
index 5f889cb..4fe7553 100644
--- a/libc/dns/resolv/res_debug.c
+++ b/libc/dns/resolv/res_debug.c
@@ -126,9 +126,27 @@
 #include <strings.h>
 #include <time.h>
 
-extern const char * const _res_opcodes[];
 extern const char * const _res_sectioncodes[];
 
+__LIBC_HIDDEN__ const char* const _res_opcodes[] = {
+  "QUERY",
+  "IQUERY",
+  "CQUERYM",
+  "CQUERYU",  /* experimental */
+  "NOTIFY",  /* experimental */
+  "UPDATE",
+  "6",
+  "7",
+  "8",
+  "9",
+  "10",
+  "11",
+  "12",
+  "13",
+  "ZONEINIT",
+  "ZONEREF",
+};
+
 #ifndef _LIBC
 /*
  * Print the current options.
diff --git a/libc/dns/resolv/res_state.c b/libc/dns/resolv/res_state.c
index 94124ff..d1f5c24 100644
--- a/libc/dns/resolv/res_state.c
+++ b/libc/dns/resolv/res_state.c
@@ -68,7 +68,7 @@
 }
 
 static void
-_res_static_done( res_static  rs )
+_res_static_done(struct res_static* rs)
 {
     /* fortunately, there is nothing to do here, since the
      * points in h_addr_ptrs and host_aliases should all
@@ -135,25 +135,6 @@
     return rt;
 }
 
-__LIBC_HIDDEN__
-struct __res_state _nres;
-
-#if 0
-struct resolv_cache*
-__get_res_cache(void)
-{
-    _res_thread*  rt = _res_thread_get();
-
-    if (!rt)
-        return NULL;
-
-    if (!rt->_cache) {
-        rt->_cache = _resolv_cache_create();
-    }
-    return rt->_cache;
-}
-#endif
-
 int*
 __get_h_errno(void)
 {
@@ -177,9 +158,7 @@
     /* nothing to do */
 }
 
-res_static
-__res_get_static(void)
-{
+struct res_static* __res_get_static(void) {
     _res_thread*  rt = _res_thread_get();
 
     return rt ? rt->_rstatic : NULL;
diff --git a/libc/include/bits/glibc-syscalls.h b/libc/include/bits/glibc-syscalls.h
index 6b00f11..fbda7fe 100644
--- a/libc/include/bits/glibc-syscalls.h
+++ b/libc/include/bits/glibc-syscalls.h
@@ -606,6 +606,9 @@
 #if defined(__NR_mount)
   #define SYS_mount __NR_mount
 #endif
+#if defined(__NR_mount_setattr)
+  #define SYS_mount_setattr __NR_mount_setattr
+#endif
 #if defined(__NR_move_mount)
   #define SYS_move_mount __NR_move_mount
 #endif
diff --git a/libc/include/sys/mman.h b/libc/include/sys/mman.h
index 3b44dab..6ef0c12 100644
--- a/libc/include/sys/mman.h
+++ b/libc/include/sys/mman.h
@@ -167,9 +167,9 @@
  * works just like madvise(2) but applies to the process specified by the given
  * PID file descriptor.
  *
- * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ * Returns the number of bytes advised on success, and returns -1 and sets `errno` on failure.
  */
-int process_madvise(int __pid_fd, const struct iovec* __iov, size_t __count, int __advice, unsigned int __flags);
+ssize_t process_madvise(int __pid_fd, const struct iovec* __iov, size_t __count, int __advice, unsigned __flags);
 
 #if defined(__USE_GNU)
 
diff --git a/libc/kernel/android/scsi/scsi/scsi.h b/libc/kernel/android/scsi/scsi/scsi.h
index 1e125d1..2ea16a3 100644
--- a/libc/kernel/android/scsi/scsi/scsi.h
+++ b/libc/kernel/android/scsi/scsi/scsi.h
@@ -57,6 +57,7 @@
 #define CLEAR_TASK_SET 0x0e
 #define INITIATE_RECOVERY 0x0f
 #define RELEASE_RECOVERY 0x10
+#define TERMINATE_IO_PROC 0x11
 #define CLEAR_ACA 0x16
 #define LOGICAL_UNIT_RESET 0x17
 #define SIMPLE_QUEUE_TAG 0x20
diff --git a/libc/kernel/tools/clean_header.py b/libc/kernel/tools/clean_header.py
index 2c2d001..cfd301a 100755
--- a/libc/kernel/tools/clean_header.py
+++ b/libc/kernel/tools/clean_header.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 #------------------------------------------------------------------------------
 # Description of the header clean process
@@ -127,7 +127,7 @@
 if __name__ == "__main__":
 
     def usage():
-        print """\
+        print("""\
     usage:  %s [options] <header_path>
 
         options:
@@ -142,7 +142,7 @@
             -d<path>  specify path of cleaned kernel headers
 
         <header_path> must be in a subdirectory of 'original'
-    """ % os.path.basename(sys.argv[0])
+    """ % os.path.basename(sys.argv[0]))
         sys.exit(1)
 
     try:
@@ -211,9 +211,8 @@
         else:
             r = "added"
 
-        print "cleaning: %-*s -> %-*s (%s)" % (35, path, 35, path, r)
+        print("cleaning: %-*s -> %-*s (%s)" % (35, path, 35, path, r))
 
-
-    b.updateGitFiles()
+    b.updateFiles()
 
     sys.exit(0)
diff --git a/libc/kernel/tools/cpp.py b/libc/kernel/tools/cpp.py
index 8538eb0..5488641 100755
--- a/libc/kernel/tools/cpp.py
+++ b/libc/kernel/tools/cpp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """A glorified C pre-processor parser."""
 
 import ctypes
@@ -14,7 +14,7 @@
     utils.panic('ANDROID_BUILD_TOP not set.\n')
 
 # Set up the env vars for libclang.
-site.addsitedir(os.path.join(top, 'external/clang/bindings/python'))
+site.addsitedir(os.path.join(top, 'prebuilts/clang/host/linux-x86/clang-stable/lib64/python3/site-packages/'))
 
 import clang.cindex
 from clang.cindex import conf
@@ -28,7 +28,7 @@
 
 # Set up LD_LIBRARY_PATH to include libclang.so, libLLVM.so, and etc.
 # Note that setting LD_LIBRARY_PATH with os.putenv() sometimes doesn't help.
-clang.cindex.Config.set_library_file(os.path.join(top, 'prebuilts/sdk/tools/linux/lib64/libclang_android.so'))
+clang.cindex.Config.set_library_file(os.path.join(top, 'prebuilts/clang/host/linux-x86/clang-stable/lib64/libclang.so'))
 
 from defaults import *
 
@@ -254,7 +254,7 @@
         token_group = TokenGroup(self._tu, tokens_memory, tokens_count)
 
         tokens = []
-        for i in xrange(0, count):
+        for i in range(0, count):
             token = Token(self._tu, token_group,
                           int_data=tokens_array[i].int_data,
                           ptr_data=tokens_array[i].ptr_data,
@@ -394,10 +394,10 @@
         self._index = 0
 
         if debugCppExpr:
-            print "CppExpr: trying to parse %s" % repr(tokens)
+            print("CppExpr: trying to parse %s" % repr(tokens))
         self.expr = self.parseExpression(0)
         if debugCppExpr:
-            print "CppExpr: got " + repr(self.expr)
+            print("CppExpr: got " + repr(self.expr))
         if self._index != self._num_tokens:
             self.throw(BadExpectedToken, "crap at end of input (%d != %d): %s"
                        % (self._index, self._num_tokens, repr(tokens)))
@@ -405,9 +405,9 @@
     def throw(self, exception, msg):
         if self._index < self._num_tokens:
             tok = self.tokens[self._index]
-            print "%d:%d: %s" % (tok.location.line, tok.location.column, msg)
+            print("%d:%d: %s" % (tok.location.line, tok.location.column, msg))
         else:
-            print "EOF: %s" % msg
+            print("EOF: %s" % msg)
         raise exception(msg)
 
     def expectId(self, id):
@@ -722,7 +722,7 @@
 
         if op == "defined":
             op, name = e
-            if macros.has_key(name):
+            if name in macros:
                 if macros[name] == kCppUndefinedMacro:
                     return ("int", 0)
                 else:
@@ -739,7 +739,7 @@
 
         elif op == "ident":
             op, name = e
-            if macros.has_key(name):
+            if name in macros:
                 try:
                     value = int(macros[name])
                     expanded = ("int", value)
@@ -1179,11 +1179,11 @@
 
     def dump(self):
         """Dump all the blocks in current BlockList."""
-        print '##### BEGIN #####'
+        print('##### BEGIN #####')
         for i, b in enumerate(self.blocks):
-            print '### BLOCK %d ###' % i
-            print b
-        print '##### END #####'
+            print('### BLOCK %d ###' % i)
+            print(b)
+        print('##### END #####')
 
     def optimizeIf01(self):
         """Remove the code between #if 0 .. #endif in a BlockList."""
@@ -1510,7 +1510,7 @@
             while i < len(tokens) and tokens[i].location in extent:
                 t = tokens[i]
                 if debugBlockParser:
-                    print ' ' * 2, t.id, t.kind, t.cursor.kind
+                    print(' ' * 2, t.id, t.kind, t.cursor.kind)
                 if (detect_change and t.cursor.extent != extent and
                     t.cursor.kind == CursorKind.PREPROCESSING_DIRECTIVE):
                     break
diff --git a/libc/kernel/tools/kernel.py b/libc/kernel/tools/kernel.py
index b6418a8..69d516b 100644
--- a/libc/kernel/tools/kernel.py
+++ b/libc/kernel/tools/kernel.py
@@ -4,7 +4,7 @@
 # list here the macros that you know are always defined/undefined when including
 # the kernel headers
 #
-import sys, cpp, re, os.path, string, time
+import sys, cpp, re, os.path, time
 from defaults import *
 
 verboseSearch = 0
@@ -56,7 +56,7 @@
     #    <mtd/*>
     #
     re_combined_str=\
-       r"^.*<((%s)/[\d\w_\+\.\-/]*)>.*$" % string.join(kernel_dirs,"|")
+       r"^.*<((%s)/[\d\w_\+\.\-/]*)>.*$" % "|".join(kernel_dirs)
 
     re_combined = re.compile(re_combined_str)
 
@@ -100,7 +100,7 @@
 
         if from_file:
             if verboseFind:
-                print "=== %s uses %s" % (from_file, header)
+                print("=== %s uses %s" % (from_file, header))
             self.headers[header].add(from_file)
 
     def parseFile(self, path, arch=None, kernel_root=None):
@@ -114,7 +114,7 @@
         try:
             f = open(path, "rt")
         except:
-            print "!!! can't read '%s'" % path
+            print("!!! can't read '%s'" % path)
             return
 
         hasIncludes = False
@@ -125,10 +125,10 @@
                 break
 
         if not hasIncludes:
-            if verboseSearch: print "::: " + path
+            if verboseSearch: print("::: " + path)
             return
 
-        if verboseSearch: print "*** " + path
+        if verboseSearch: print("*** " + path)
 
         list = cpp.BlockParser().parseFile(path)
         if list:
@@ -205,7 +205,6 @@
 
         if len(kernel_root) > 0 and kernel_root[-1] != "/":
             kernel_root += "/"
-        #print "using kernel_root %s" % kernel_root
         self.archs         = archs
         self.searched      = set(headers)
         self.kernel_root   = kernel_root
@@ -300,8 +299,8 @@
         self.items = {}
         self.duplicates = False
 
-    def parseLine(self,line):
-        line = string.strip(line)
+    def parseLine(self, line):
+        line = line.strip()
 
         # skip empty and comment lines
         if len(line) == 0 or line[0] == "#":
diff --git a/libc/kernel/tools/update_all.py b/libc/kernel/tools/update_all.py
index cef24dd..6206248 100755
--- a/libc/kernel/tools/update_all.py
+++ b/libc/kernel/tools/update_all.py
@@ -1,11 +1,11 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
-import sys, cpp, kernel, glob, os, re, getopt, clean_header, subprocess, shutil
+import sys, cpp, kernel, glob, os, re, getopt, clean_header, shutil
 from defaults import *
 from utils import *
 
 def Usage():
-    print """\
+    print("""\
   usage: %(progname)s [kernel-original-path] [kernel-modified-path]
 
     this program is used to update all the auto-generated clean headers
@@ -21,14 +21,14 @@
 
       - the clean headers will be placed in 'bionic/libc/kernel/arch-<arch>/asm',
         'bionic/libc/kernel/android', etc..
-""" % { "progname" : os.path.basename(sys.argv[0]) }
+""" % { "progname" : os.path.basename(sys.argv[0]) })
     sys.exit(0)
 
 def ProcessFiles(updater, original_dir, modified_dir, src_rel_dir, update_rel_dir):
     # Delete the old headers before updating to the new headers.
     update_dir = os.path.join(get_kernel_dir(), update_rel_dir)
     shutil.rmtree(update_dir)
-    os.mkdir(update_dir, 0755)
+    os.mkdir(update_dir, 0o755)
 
     src_dir = os.path.normpath(os.path.join(original_dir, src_rel_dir))
     src_dir_len = len(src_dir) + 1
@@ -62,7 +62,7 @@
             else:
                 state = "added"
             update_path = os.path.join(update_rel_dir, rel_path)
-            print "cleaning %s -> %s (%s)" % (src_str, update_path, state)
+            print("cleaning %s -> %s (%s)" % (src_str, update_path, state))
 
 
 # This lets us support regular system calls like __NR_write and also weird
@@ -149,9 +149,10 @@
 # Now process the special files.
 ProcessFiles(updater, original_dir, modified_dir, "scsi", os.path.join("android", "scsi", "scsi"))
 
-updater.updateGitFiles()
+# Copy all of the files.
+updater.updateFiles()
 
 # Now re-generate the <bits/glibc-syscalls.h> from the new uapi headers.
 updater = BatchFileUpdater()
 GenerateGlibcSyscallsHeader(updater)
-updater.updateGitFiles()
+updater.updateFiles()
diff --git a/libc/kernel/tools/utils.py b/libc/kernel/tools/utils.py
index 1b06b1b..3b4828b 100644
--- a/libc/kernel/tools/utils.py
+++ b/libc/kernel/tools/utils.py
@@ -1,6 +1,5 @@
 # common python utility routines for the Bionic tool scripts
 
-import commands
 import logging
 import os
 import string
@@ -146,19 +145,3 @@
 
         for dst in sorted(deletes):
             os.remove(dst)
-
-    def updateGitFiles(self):
-        adds, deletes, edits = self.getChanges()
-
-        if adds:
-            for dst in sorted(adds):
-                self._writeFile(dst)
-            commands.getoutput("git add " + " ".join(adds))
-
-        if deletes:
-            commands.getoutput("git rm " + " ".join(deletes))
-
-        if edits:
-            for dst in sorted(edits):
-                self._writeFile(dst)
-            commands.getoutput("git add " + " ".join(edits))
diff --git a/libc/kernel/uapi/asm-arm/asm/unistd-common.h b/libc/kernel/uapi/asm-arm/asm/unistd-common.h
index 6068bd2..070c77b 100644
--- a/libc/kernel/uapi/asm-arm/asm/unistd-common.h
+++ b/libc/kernel/uapi/asm-arm/asm/unistd-common.h
@@ -413,4 +413,5 @@
 #define __NR_faccessat2 (__NR_SYSCALL_BASE + 439)
 #define __NR_process_madvise (__NR_SYSCALL_BASE + 440)
 #define __NR_epoll_pwait2 (__NR_SYSCALL_BASE + 441)
+#define __NR_mount_setattr (__NR_SYSCALL_BASE + 442)
 #endif
diff --git a/libc/kernel/uapi/asm-generic/unistd.h b/libc/kernel/uapi/asm-generic/unistd.h
index f284254..1409701 100644
--- a/libc/kernel/uapi/asm-generic/unistd.h
+++ b/libc/kernel/uapi/asm-generic/unistd.h
@@ -402,8 +402,9 @@
 #define __NR_faccessat2 439
 #define __NR_process_madvise 440
 #define __NR_epoll_pwait2 441
+#define __NR_mount_setattr 442
 #undef __NR_syscalls
-#define __NR_syscalls 442
+#define __NR_syscalls 443
 #if __BITS_PER_LONG == 64 && !defined(__SYSCALL_COMPAT)
 #define __NR_fcntl __NR3264_fcntl
 #define __NR_statfs __NR3264_statfs
diff --git a/libc/kernel/uapi/asm-x86/asm/kvm.h b/libc/kernel/uapi/asm-x86/asm/kvm.h
index 7740002..0d82c5d 100644
--- a/libc/kernel/uapi/asm-x86/asm/kvm.h
+++ b/libc/kernel/uapi/asm-x86/asm/kvm.h
@@ -111,6 +111,7 @@
 #define KVM_IRQCHIP_IOAPIC 2
 #define KVM_NR_IRQCHIPS 3
 #define KVM_RUN_X86_SMM (1 << 0)
+#define KVM_RUN_X86_BUS_LOCK (1 << 1)
 struct kvm_regs {
   __u64 rax, rbx, rcx, rdx;
   __u64 rsi, rdi, rsp, rbp;
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_32.h b/libc/kernel/uapi/asm-x86/asm/unistd_32.h
index ca34f04..7fe2421 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_32.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_32.h
@@ -449,4 +449,5 @@
 #define __NR_faccessat2 439
 #define __NR_process_madvise 440
 #define __NR_epoll_pwait2 441
+#define __NR_mount_setattr 442
 #endif
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_64.h b/libc/kernel/uapi/asm-x86/asm/unistd_64.h
index 82268bd..7e3c924 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_64.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_64.h
@@ -371,4 +371,5 @@
 #define __NR_faccessat2 439
 #define __NR_process_madvise 440
 #define __NR_epoll_pwait2 441
+#define __NR_mount_setattr 442
 #endif
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_x32.h b/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
index b5b39ad..529ded3 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
@@ -324,6 +324,7 @@
 #define __NR_faccessat2 (__X32_SYSCALL_BIT + 439)
 #define __NR_process_madvise (__X32_SYSCALL_BIT + 440)
 #define __NR_epoll_pwait2 (__X32_SYSCALL_BIT + 441)
+#define __NR_mount_setattr (__X32_SYSCALL_BIT + 442)
 #define __NR_rt_sigaction (__X32_SYSCALL_BIT + 512)
 #define __NR_rt_sigreturn (__X32_SYSCALL_BIT + 513)
 #define __NR_ioctl (__X32_SYSCALL_BIT + 514)
diff --git a/libc/kernel/uapi/asm-x86/asm/vmx.h b/libc/kernel/uapi/asm-x86/asm/vmx.h
index fc10e02..1771faa 100644
--- a/libc/kernel/uapi/asm-x86/asm/vmx.h
+++ b/libc/kernel/uapi/asm-x86/asm/vmx.h
@@ -79,7 +79,8 @@
 #define EXIT_REASON_XRSTORS 64
 #define EXIT_REASON_UMWAIT 67
 #define EXIT_REASON_TPAUSE 68
-#define VMX_EXIT_REASONS { EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, { EXIT_REASON_EXTERNAL_INTERRUPT, "EXTERNAL_INTERRUPT" }, { EXIT_REASON_TRIPLE_FAULT, "TRIPLE_FAULT" }, { EXIT_REASON_INIT_SIGNAL, "INIT_SIGNAL" }, { EXIT_REASON_SIPI_SIGNAL, "SIPI_SIGNAL" }, { EXIT_REASON_INTERRUPT_WINDOW, "INTERRUPT_WINDOW" }, { EXIT_REASON_NMI_WINDOW, "NMI_WINDOW" }, { EXIT_REASON_TASK_SWITCH, "TASK_SWITCH" }, { EXIT_REASON_CPUID, "CPUID" }, { EXIT_REASON_HLT, "HLT" }, { EXIT_REASON_INVD, "INVD" }, { EXIT_REASON_INVLPG, "INVLPG" }, { EXIT_REASON_RDPMC, "RDPMC" }, { EXIT_REASON_RDTSC, "RDTSC" }, { EXIT_REASON_VMCALL, "VMCALL" }, { EXIT_REASON_VMCLEAR, "VMCLEAR" }, { EXIT_REASON_VMLAUNCH, "VMLAUNCH" }, { EXIT_REASON_VMPTRLD, "VMPTRLD" }, { EXIT_REASON_VMPTRST, "VMPTRST" }, { EXIT_REASON_VMREAD, "VMREAD" }, { EXIT_REASON_VMRESUME, "VMRESUME" }, { EXIT_REASON_VMWRITE, "VMWRITE" }, { EXIT_REASON_VMOFF, "VMOFF" }, { EXIT_REASON_VMON, "VMON" }, { EXIT_REASON_CR_ACCESS, "CR_ACCESS" }, { EXIT_REASON_DR_ACCESS, "DR_ACCESS" }, { EXIT_REASON_IO_INSTRUCTION, "IO_INSTRUCTION" }, { EXIT_REASON_MSR_READ, "MSR_READ" }, { EXIT_REASON_MSR_WRITE, "MSR_WRITE" }, { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, { EXIT_REASON_MSR_LOAD_FAIL, "MSR_LOAD_FAIL" }, { EXIT_REASON_MWAIT_INSTRUCTION, "MWAIT_INSTRUCTION" }, { EXIT_REASON_MONITOR_TRAP_FLAG, "MONITOR_TRAP_FLAG" }, { EXIT_REASON_MONITOR_INSTRUCTION, "MONITOR_INSTRUCTION" }, { EXIT_REASON_PAUSE_INSTRUCTION, "PAUSE_INSTRUCTION" }, { EXIT_REASON_MCE_DURING_VMENTRY, "MCE_DURING_VMENTRY" }, { EXIT_REASON_TPR_BELOW_THRESHOLD, "TPR_BELOW_THRESHOLD" }, { EXIT_REASON_APIC_ACCESS, "APIC_ACCESS" }, { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, { EXIT_REASON_GDTR_IDTR, "GDTR_IDTR" }, { EXIT_REASON_LDTR_TR, "LDTR_TR" }, { EXIT_REASON_EPT_VIOLATION, "EPT_VIOLATION" }, { EXIT_REASON_EPT_MISCONFIG, "EPT_MISCONFIG" }, { EXIT_REASON_INVEPT, "INVEPT" }, { EXIT_REASON_RDTSCP, "RDTSCP" }, { EXIT_REASON_PREEMPTION_TIMER, "PREEMPTION_TIMER" }, { EXIT_REASON_INVVPID, "INVVPID" }, { EXIT_REASON_WBINVD, "WBINVD" }, { EXIT_REASON_XSETBV, "XSETBV" }, { EXIT_REASON_APIC_WRITE, "APIC_WRITE" }, { EXIT_REASON_RDRAND, "RDRAND" }, { EXIT_REASON_INVPCID, "INVPCID" }, { EXIT_REASON_VMFUNC, "VMFUNC" }, { EXIT_REASON_ENCLS, "ENCLS" }, { EXIT_REASON_RDSEED, "RDSEED" }, { EXIT_REASON_PML_FULL, "PML_FULL" }, { EXIT_REASON_XSAVES, "XSAVES" }, { EXIT_REASON_XRSTORS, "XRSTORS" }, { EXIT_REASON_UMWAIT, "UMWAIT" }, { EXIT_REASON_TPAUSE, "TPAUSE" }
+#define EXIT_REASON_BUS_LOCK 74
+#define VMX_EXIT_REASONS { EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, { EXIT_REASON_EXTERNAL_INTERRUPT, "EXTERNAL_INTERRUPT" }, { EXIT_REASON_TRIPLE_FAULT, "TRIPLE_FAULT" }, { EXIT_REASON_INIT_SIGNAL, "INIT_SIGNAL" }, { EXIT_REASON_SIPI_SIGNAL, "SIPI_SIGNAL" }, { EXIT_REASON_INTERRUPT_WINDOW, "INTERRUPT_WINDOW" }, { EXIT_REASON_NMI_WINDOW, "NMI_WINDOW" }, { EXIT_REASON_TASK_SWITCH, "TASK_SWITCH" }, { EXIT_REASON_CPUID, "CPUID" }, { EXIT_REASON_HLT, "HLT" }, { EXIT_REASON_INVD, "INVD" }, { EXIT_REASON_INVLPG, "INVLPG" }, { EXIT_REASON_RDPMC, "RDPMC" }, { EXIT_REASON_RDTSC, "RDTSC" }, { EXIT_REASON_VMCALL, "VMCALL" }, { EXIT_REASON_VMCLEAR, "VMCLEAR" }, { EXIT_REASON_VMLAUNCH, "VMLAUNCH" }, { EXIT_REASON_VMPTRLD, "VMPTRLD" }, { EXIT_REASON_VMPTRST, "VMPTRST" }, { EXIT_REASON_VMREAD, "VMREAD" }, { EXIT_REASON_VMRESUME, "VMRESUME" }, { EXIT_REASON_VMWRITE, "VMWRITE" }, { EXIT_REASON_VMOFF, "VMOFF" }, { EXIT_REASON_VMON, "VMON" }, { EXIT_REASON_CR_ACCESS, "CR_ACCESS" }, { EXIT_REASON_DR_ACCESS, "DR_ACCESS" }, { EXIT_REASON_IO_INSTRUCTION, "IO_INSTRUCTION" }, { EXIT_REASON_MSR_READ, "MSR_READ" }, { EXIT_REASON_MSR_WRITE, "MSR_WRITE" }, { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, { EXIT_REASON_MSR_LOAD_FAIL, "MSR_LOAD_FAIL" }, { EXIT_REASON_MWAIT_INSTRUCTION, "MWAIT_INSTRUCTION" }, { EXIT_REASON_MONITOR_TRAP_FLAG, "MONITOR_TRAP_FLAG" }, { EXIT_REASON_MONITOR_INSTRUCTION, "MONITOR_INSTRUCTION" }, { EXIT_REASON_PAUSE_INSTRUCTION, "PAUSE_INSTRUCTION" }, { EXIT_REASON_MCE_DURING_VMENTRY, "MCE_DURING_VMENTRY" }, { EXIT_REASON_TPR_BELOW_THRESHOLD, "TPR_BELOW_THRESHOLD" }, { EXIT_REASON_APIC_ACCESS, "APIC_ACCESS" }, { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, { EXIT_REASON_GDTR_IDTR, "GDTR_IDTR" }, { EXIT_REASON_LDTR_TR, "LDTR_TR" }, { EXIT_REASON_EPT_VIOLATION, "EPT_VIOLATION" }, { EXIT_REASON_EPT_MISCONFIG, "EPT_MISCONFIG" }, { EXIT_REASON_INVEPT, "INVEPT" }, { EXIT_REASON_RDTSCP, "RDTSCP" }, { EXIT_REASON_PREEMPTION_TIMER, "PREEMPTION_TIMER" }, { EXIT_REASON_INVVPID, "INVVPID" }, { EXIT_REASON_WBINVD, "WBINVD" }, { EXIT_REASON_XSETBV, "XSETBV" }, { EXIT_REASON_APIC_WRITE, "APIC_WRITE" }, { EXIT_REASON_RDRAND, "RDRAND" }, { EXIT_REASON_INVPCID, "INVPCID" }, { EXIT_REASON_VMFUNC, "VMFUNC" }, { EXIT_REASON_ENCLS, "ENCLS" }, { EXIT_REASON_RDSEED, "RDSEED" }, { EXIT_REASON_PML_FULL, "PML_FULL" }, { EXIT_REASON_XSAVES, "XSAVES" }, { EXIT_REASON_XRSTORS, "XRSTORS" }, { EXIT_REASON_UMWAIT, "UMWAIT" }, { EXIT_REASON_TPAUSE, "TPAUSE" }, { EXIT_REASON_BUS_LOCK, "BUS_LOCK" }
 #define VMX_EXIT_REASON_FLAGS { VMX_EXIT_REASONS_FAILED_VMENTRY, "FAILED_VMENTRY" }
 #define VMX_ABORT_SAVE_GUEST_MSR_FAIL 1
 #define VMX_ABORT_LOAD_HOST_PDPTE_FAIL 2
diff --git a/libc/kernel/uapi/drm/drm_fourcc.h b/libc/kernel/uapi/drm/drm_fourcc.h
index de01ddf..4574c1c 100644
--- a/libc/kernel/uapi/drm/drm_fourcc.h
+++ b/libc/kernel/uapi/drm/drm_fourcc.h
@@ -153,6 +153,7 @@
 #define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5)
 #define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
 #define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)
+#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC fourcc_mod_code(INTEL, 8)
 #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
 #define DRM_FORMAT_MOD_SAMSUNG_16_16_TILE fourcc_mod_code(SAMSUNG, 2)
 #define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1)
@@ -204,9 +205,9 @@
 #define AFBC_FORMAT_MOD_USM (1ULL << 12)
 #define DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_MISC, 1ULL)
 #define DRM_FORMAT_MOD_ALLWINNER_TILED fourcc_mod_code(ALLWINNER, 1)
-#define __fourcc_mod_amlogic_layout_mask 0xf
+#define __fourcc_mod_amlogic_layout_mask 0xff
 #define __fourcc_mod_amlogic_options_shift 8
-#define __fourcc_mod_amlogic_options_mask 0xf
+#define __fourcc_mod_amlogic_options_mask 0xff
 #define DRM_FORMAT_MOD_AMLOGIC_FBC(__layout,__options) fourcc_mod_code(AMLOGIC, ((__layout) & __fourcc_mod_amlogic_layout_mask) | (((__options) & __fourcc_mod_amlogic_options_mask) << __fourcc_mod_amlogic_options_shift))
 #define AMLOGIC_FBC_LAYOUT_BASIC (1ULL)
 #define AMLOGIC_FBC_LAYOUT_SCATTER (2ULL)
diff --git a/libc/kernel/uapi/drm/i915_drm.h b/libc/kernel/uapi/drm/i915_drm.h
index c634925..f265d92 100644
--- a/libc/kernel/uapi/drm/i915_drm.h
+++ b/libc/kernel/uapi/drm/i915_drm.h
@@ -67,6 +67,7 @@
 #define I915_PMU_REQUESTED_FREQUENCY __I915_PMU_OTHER(1)
 #define I915_PMU_INTERRUPTS __I915_PMU_OTHER(2)
 #define I915_PMU_RC6_RESIDENCY __I915_PMU_OTHER(3)
+#define I915_PMU_SOFTWARE_GT_AWAKE_TIME __I915_PMU_OTHER(4)
 #define I915_PMU_LAST I915_PMU_RC6_RESIDENCY
 #define I915_NR_TEX_REGIONS 255
 #define I915_LOG_MIN_TEX_REGION_SIZE 14
diff --git a/libc/kernel/uapi/linux/acrn.h b/libc/kernel/uapi/linux/acrn.h
new file mode 100644
index 0000000..74b719a
--- /dev/null
+++ b/libc/kernel/uapi/linux/acrn.h
@@ -0,0 +1,263 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_ACRN_H
+#define _UAPI_ACRN_H
+#include <linux/types.h>
+#include <linux/uuid.h>
+#define ACRN_IO_REQUEST_MAX 16
+#define ACRN_IOREQ_STATE_PENDING 0
+#define ACRN_IOREQ_STATE_COMPLETE 1
+#define ACRN_IOREQ_STATE_PROCESSING 2
+#define ACRN_IOREQ_STATE_FREE 3
+#define ACRN_IOREQ_TYPE_PORTIO 0
+#define ACRN_IOREQ_TYPE_MMIO 1
+#define ACRN_IOREQ_TYPE_PCICFG 2
+#define ACRN_IOREQ_DIR_READ 0
+#define ACRN_IOREQ_DIR_WRITE 1
+struct acrn_mmio_request {
+  __u32 direction;
+  __u32 reserved;
+  __u64 address;
+  __u64 size;
+  __u64 value;
+};
+struct acrn_pio_request {
+  __u32 direction;
+  __u32 reserved;
+  __u64 address;
+  __u64 size;
+  __u32 value;
+};
+struct acrn_pci_request {
+  __u32 direction;
+  __u32 reserved[3];
+  __u64 size;
+  __u32 value;
+  __u32 bus;
+  __u32 dev;
+  __u32 func;
+  __u32 reg;
+};
+struct acrn_io_request {
+  __u32 type;
+  __u32 completion_polling;
+  __u32 reserved0[14];
+  union {
+    struct acrn_pio_request pio_request;
+    struct acrn_pci_request pci_request;
+    struct acrn_mmio_request mmio_request;
+    __u64 data[8];
+  } reqs;
+  __u32 reserved1;
+  __u32 kernel_handled;
+  __u32 processed;
+} __attribute__((aligned(256)));
+struct acrn_io_request_buffer {
+  union {
+    struct acrn_io_request req_slot[ACRN_IO_REQUEST_MAX];
+    __u8 reserved[4096];
+  };
+};
+struct acrn_ioreq_notify {
+  __u16 vmid;
+  __u16 reserved;
+  __u32 vcpu;
+};
+struct acrn_vm_creation {
+  __u16 vmid;
+  __u16 reserved0;
+  __u16 vcpu_num;
+  __u16 reserved1;
+  guid_t uuid;
+  __u64 vm_flag;
+  __u64 ioreq_buf;
+  __u64 cpu_affinity;
+};
+struct acrn_gp_regs {
+  __le64 rax;
+  __le64 rcx;
+  __le64 rdx;
+  __le64 rbx;
+  __le64 rsp;
+  __le64 rbp;
+  __le64 rsi;
+  __le64 rdi;
+  __le64 r8;
+  __le64 r9;
+  __le64 r10;
+  __le64 r11;
+  __le64 r12;
+  __le64 r13;
+  __le64 r14;
+  __le64 r15;
+};
+struct acrn_descriptor_ptr {
+  __le16 limit;
+  __le64 base;
+  __le16 reserved[3];
+} __attribute__((__packed__));
+struct acrn_regs {
+  struct acrn_gp_regs gprs;
+  struct acrn_descriptor_ptr gdt;
+  struct acrn_descriptor_ptr idt;
+  __le64 rip;
+  __le64 cs_base;
+  __le64 cr0;
+  __le64 cr4;
+  __le64 cr3;
+  __le64 ia32_efer;
+  __le64 rflags;
+  __le64 reserved_64[4];
+  __le32 cs_ar;
+  __le32 cs_limit;
+  __le32 reserved_32[3];
+  __le16 cs_sel;
+  __le16 ss_sel;
+  __le16 ds_sel;
+  __le16 es_sel;
+  __le16 fs_sel;
+  __le16 gs_sel;
+  __le16 ldt_sel;
+  __le16 tr_sel;
+};
+struct acrn_vcpu_regs {
+  __u16 vcpu_id;
+  __u16 reserved[3];
+  struct acrn_regs vcpu_regs;
+};
+#define ACRN_MEM_ACCESS_RIGHT_MASK 0x00000007U
+#define ACRN_MEM_ACCESS_READ 0x00000001U
+#define ACRN_MEM_ACCESS_WRITE 0x00000002U
+#define ACRN_MEM_ACCESS_EXEC 0x00000004U
+#define ACRN_MEM_ACCESS_RWX (ACRN_MEM_ACCESS_READ | ACRN_MEM_ACCESS_WRITE | ACRN_MEM_ACCESS_EXEC)
+#define ACRN_MEM_TYPE_MASK 0x000007C0U
+#define ACRN_MEM_TYPE_WB 0x00000040U
+#define ACRN_MEM_TYPE_WT 0x00000080U
+#define ACRN_MEM_TYPE_UC 0x00000100U
+#define ACRN_MEM_TYPE_WC 0x00000200U
+#define ACRN_MEM_TYPE_WP 0x00000400U
+#define ACRN_MEMMAP_RAM 0
+#define ACRN_MEMMAP_MMIO 1
+struct acrn_vm_memmap {
+  __u32 type;
+  __u32 attr;
+  __u64 user_vm_pa;
+  union {
+    __u64 service_vm_pa;
+    __u64 vma_base;
+  };
+  __u64 len;
+};
+#define ACRN_PTDEV_IRQ_INTX 0
+#define ACRN_PTDEV_IRQ_MSI 1
+#define ACRN_PTDEV_IRQ_MSIX 2
+struct acrn_ptdev_irq {
+  __u32 type;
+  __u16 virt_bdf;
+  __u16 phys_bdf;
+  struct {
+    __u32 virt_pin;
+    __u32 phys_pin;
+    __u32 is_pic_pin;
+  } intx;
+};
+#define ACRN_PTDEV_QUIRK_ASSIGN (1U << 0)
+#define ACRN_PCI_NUM_BARS 6
+struct acrn_pcidev {
+  __u32 type;
+  __u16 virt_bdf;
+  __u16 phys_bdf;
+  __u8 intr_line;
+  __u8 intr_pin;
+  __u32 bar[ACRN_PCI_NUM_BARS];
+};
+struct acrn_msi_entry {
+  __u64 msi_addr;
+  __u64 msi_data;
+};
+struct acrn_acpi_generic_address {
+  __u8 space_id;
+  __u8 bit_width;
+  __u8 bit_offset;
+  __u8 access_size;
+  __u64 address;
+} __attribute__((__packed__));
+struct acrn_cstate_data {
+  struct acrn_acpi_generic_address cx_reg;
+  __u8 type;
+  __u32 latency;
+  __u64 power;
+};
+struct acrn_pstate_data {
+  __u64 core_frequency;
+  __u64 power;
+  __u64 transition_latency;
+  __u64 bus_master_latency;
+  __u64 control;
+  __u64 status;
+};
+#define PMCMD_TYPE_MASK 0x000000ff
+enum acrn_pm_cmd_type {
+  ACRN_PMCMD_GET_PX_CNT,
+  ACRN_PMCMD_GET_PX_DATA,
+  ACRN_PMCMD_GET_CX_CNT,
+  ACRN_PMCMD_GET_CX_DATA,
+};
+#define ACRN_IOEVENTFD_FLAG_PIO 0x01
+#define ACRN_IOEVENTFD_FLAG_DATAMATCH 0x02
+#define ACRN_IOEVENTFD_FLAG_DEASSIGN 0x04
+struct acrn_ioeventfd {
+  __u32 fd;
+  __u32 flags;
+  __u64 addr;
+  __u32 len;
+  __u32 reserved;
+  __u64 data;
+};
+#define ACRN_IRQFD_FLAG_DEASSIGN 0x01
+struct acrn_irqfd {
+  __s32 fd;
+  __u32 flags;
+  struct acrn_msi_entry msi;
+};
+#define ACRN_IOCTL_TYPE 0xA2
+#define ACRN_IOCTL_CREATE_VM _IOWR(ACRN_IOCTL_TYPE, 0x10, struct acrn_vm_creation)
+#define ACRN_IOCTL_DESTROY_VM _IO(ACRN_IOCTL_TYPE, 0x11)
+#define ACRN_IOCTL_START_VM _IO(ACRN_IOCTL_TYPE, 0x12)
+#define ACRN_IOCTL_PAUSE_VM _IO(ACRN_IOCTL_TYPE, 0x13)
+#define ACRN_IOCTL_RESET_VM _IO(ACRN_IOCTL_TYPE, 0x15)
+#define ACRN_IOCTL_SET_VCPU_REGS _IOW(ACRN_IOCTL_TYPE, 0x16, struct acrn_vcpu_regs)
+#define ACRN_IOCTL_INJECT_MSI _IOW(ACRN_IOCTL_TYPE, 0x23, struct acrn_msi_entry)
+#define ACRN_IOCTL_VM_INTR_MONITOR _IOW(ACRN_IOCTL_TYPE, 0x24, unsigned long)
+#define ACRN_IOCTL_SET_IRQLINE _IOW(ACRN_IOCTL_TYPE, 0x25, __u64)
+#define ACRN_IOCTL_NOTIFY_REQUEST_FINISH _IOW(ACRN_IOCTL_TYPE, 0x31, struct acrn_ioreq_notify)
+#define ACRN_IOCTL_CREATE_IOREQ_CLIENT _IO(ACRN_IOCTL_TYPE, 0x32)
+#define ACRN_IOCTL_ATTACH_IOREQ_CLIENT _IO(ACRN_IOCTL_TYPE, 0x33)
+#define ACRN_IOCTL_DESTROY_IOREQ_CLIENT _IO(ACRN_IOCTL_TYPE, 0x34)
+#define ACRN_IOCTL_CLEAR_VM_IOREQ _IO(ACRN_IOCTL_TYPE, 0x35)
+#define ACRN_IOCTL_SET_MEMSEG _IOW(ACRN_IOCTL_TYPE, 0x41, struct acrn_vm_memmap)
+#define ACRN_IOCTL_UNSET_MEMSEG _IOW(ACRN_IOCTL_TYPE, 0x42, struct acrn_vm_memmap)
+#define ACRN_IOCTL_SET_PTDEV_INTR _IOW(ACRN_IOCTL_TYPE, 0x53, struct acrn_ptdev_irq)
+#define ACRN_IOCTL_RESET_PTDEV_INTR _IOW(ACRN_IOCTL_TYPE, 0x54, struct acrn_ptdev_irq)
+#define ACRN_IOCTL_ASSIGN_PCIDEV _IOW(ACRN_IOCTL_TYPE, 0x55, struct acrn_pcidev)
+#define ACRN_IOCTL_DEASSIGN_PCIDEV _IOW(ACRN_IOCTL_TYPE, 0x56, struct acrn_pcidev)
+#define ACRN_IOCTL_PM_GET_CPU_STATE _IOWR(ACRN_IOCTL_TYPE, 0x60, __u64)
+#define ACRN_IOCTL_IOEVENTFD _IOW(ACRN_IOCTL_TYPE, 0x70, struct acrn_ioeventfd)
+#define ACRN_IOCTL_IRQFD _IOW(ACRN_IOCTL_TYPE, 0x71, struct acrn_irqfd)
+#endif
diff --git a/libc/kernel/uapi/linux/binfmts.h b/libc/kernel/uapi/linux/binfmts.h
index 8c4fed0..053be3c 100644
--- a/libc/kernel/uapi/linux/binfmts.h
+++ b/libc/kernel/uapi/linux/binfmts.h
@@ -23,4 +23,6 @@
 #define MAX_ARG_STRLEN (PAGE_SIZE * 32)
 #define MAX_ARG_STRINGS 0x7FFFFFFF
 #define BINPRM_BUF_SIZE 256
+#define AT_FLAGS_PRESERVE_ARGV0_BIT 0
+#define AT_FLAGS_PRESERVE_ARGV0 (1 << AT_FLAGS_PRESERVE_ARGV0_BIT)
 #endif
diff --git a/libc/kernel/uapi/linux/bpf.h b/libc/kernel/uapi/linux/bpf.h
index 9ee7fbd..c643ffa 100644
--- a/libc/kernel/uapi/linux/bpf.h
+++ b/libc/kernel/uapi/linux/bpf.h
@@ -23,6 +23,7 @@
 #define BPF_JMP32 0x06
 #define BPF_ALU64 0x07
 #define BPF_DW 0x18
+#define BPF_ATOMIC 0xc0
 #define BPF_XADD 0xc0
 #define BPF_MOV 0xb0
 #define BPF_ARSH 0xc0
@@ -40,6 +41,9 @@
 #define BPF_JSLE 0xd0
 #define BPF_CALL 0x80
 #define BPF_EXIT 0x90
+#define BPF_FETCH 0x01
+#define BPF_XCHG (0xe0 | BPF_FETCH)
+#define BPF_CMPXCHG (0xf0 | BPF_FETCH)
 enum {
   BPF_REG_0 = 0,
   BPF_REG_1,
@@ -456,7 +460,7 @@
     __u32 flags;
   } prog_bind_map;
 } __attribute__((aligned(8)));
-#define __BPF_FUNC_MAPPER(FN) FN(unspec), FN(map_lookup_elem), FN(map_update_elem), FN(map_delete_elem), FN(probe_read), FN(ktime_get_ns), FN(trace_printk), FN(get_prandom_u32), FN(get_smp_processor_id), FN(skb_store_bytes), FN(l3_csum_replace), FN(l4_csum_replace), FN(tail_call), FN(clone_redirect), FN(get_current_pid_tgid), FN(get_current_uid_gid), FN(get_current_comm), FN(get_cgroup_classid), FN(skb_vlan_push), FN(skb_vlan_pop), FN(skb_get_tunnel_key), FN(skb_set_tunnel_key), FN(perf_event_read), FN(redirect), FN(get_route_realm), FN(perf_event_output), FN(skb_load_bytes), FN(get_stackid), FN(csum_diff), FN(skb_get_tunnel_opt), FN(skb_set_tunnel_opt), FN(skb_change_proto), FN(skb_change_type), FN(skb_under_cgroup), FN(get_hash_recalc), FN(get_current_task), FN(probe_write_user), FN(current_task_under_cgroup), FN(skb_change_tail), FN(skb_pull_data), FN(csum_update), FN(set_hash_invalid), FN(get_numa_node_id), FN(skb_change_head), FN(xdp_adjust_head), FN(probe_read_str), FN(get_socket_cookie), FN(get_socket_uid), FN(set_hash), FN(setsockopt), FN(skb_adjust_room), FN(redirect_map), FN(sk_redirect_map), FN(sock_map_update), FN(xdp_adjust_meta), FN(perf_event_read_value), FN(perf_prog_read_value), FN(getsockopt), FN(override_return), FN(sock_ops_cb_flags_set), FN(msg_redirect_map), FN(msg_apply_bytes), FN(msg_cork_bytes), FN(msg_pull_data), FN(bind), FN(xdp_adjust_tail), FN(skb_get_xfrm_state), FN(get_stack), FN(skb_load_bytes_relative), FN(fib_lookup), FN(sock_hash_update), FN(msg_redirect_hash), FN(sk_redirect_hash), FN(lwt_push_encap), FN(lwt_seg6_store_bytes), FN(lwt_seg6_adjust_srh), FN(lwt_seg6_action), FN(rc_repeat), FN(rc_keydown), FN(skb_cgroup_id), FN(get_current_cgroup_id), FN(get_local_storage), FN(sk_select_reuseport), FN(skb_ancestor_cgroup_id), FN(sk_lookup_tcp), FN(sk_lookup_udp), FN(sk_release), FN(map_push_elem), FN(map_pop_elem), FN(map_peek_elem), FN(msg_push_data), FN(msg_pop_data), FN(rc_pointer_rel), FN(spin_lock), FN(spin_unlock), FN(sk_fullsock), FN(tcp_sock), FN(skb_ecn_set_ce), FN(get_listener_sock), FN(skc_lookup_tcp), FN(tcp_check_syncookie), FN(sysctl_get_name), FN(sysctl_get_current_value), FN(sysctl_get_new_value), FN(sysctl_set_new_value), FN(strtol), FN(strtoul), FN(sk_storage_get), FN(sk_storage_delete), FN(send_signal), FN(tcp_gen_syncookie), FN(skb_output), FN(probe_read_user), FN(probe_read_kernel), FN(probe_read_user_str), FN(probe_read_kernel_str), FN(tcp_send_ack), FN(send_signal_thread), FN(jiffies64), FN(read_branch_records), FN(get_ns_current_pid_tgid), FN(xdp_output), FN(get_netns_cookie), FN(get_current_ancestor_cgroup_id), FN(sk_assign), FN(ktime_get_boot_ns), FN(seq_printf), FN(seq_write), FN(sk_cgroup_id), FN(sk_ancestor_cgroup_id), FN(ringbuf_output), FN(ringbuf_reserve), FN(ringbuf_submit), FN(ringbuf_discard), FN(ringbuf_query), FN(csum_level), FN(skc_to_tcp6_sock), FN(skc_to_tcp_sock), FN(skc_to_tcp_timewait_sock), FN(skc_to_tcp_request_sock), FN(skc_to_udp6_sock), FN(get_task_stack), FN(load_hdr_opt), FN(store_hdr_opt), FN(reserve_hdr_opt), FN(inode_storage_get), FN(inode_storage_delete), FN(d_path), FN(copy_from_user), FN(snprintf_btf), FN(seq_printf_btf), FN(skb_cgroup_classid), FN(redirect_neigh), FN(per_cpu_ptr), FN(this_cpu_ptr), FN(redirect_peer), FN(task_storage_get), FN(task_storage_delete), FN(get_current_task_btf), FN(bprm_opts_set), FN(ktime_get_coarse_ns), FN(ima_inode_hash), FN(sock_from_file),
+#define __BPF_FUNC_MAPPER(FN) FN(unspec), FN(map_lookup_elem), FN(map_update_elem), FN(map_delete_elem), FN(probe_read), FN(ktime_get_ns), FN(trace_printk), FN(get_prandom_u32), FN(get_smp_processor_id), FN(skb_store_bytes), FN(l3_csum_replace), FN(l4_csum_replace), FN(tail_call), FN(clone_redirect), FN(get_current_pid_tgid), FN(get_current_uid_gid), FN(get_current_comm), FN(get_cgroup_classid), FN(skb_vlan_push), FN(skb_vlan_pop), FN(skb_get_tunnel_key), FN(skb_set_tunnel_key), FN(perf_event_read), FN(redirect), FN(get_route_realm), FN(perf_event_output), FN(skb_load_bytes), FN(get_stackid), FN(csum_diff), FN(skb_get_tunnel_opt), FN(skb_set_tunnel_opt), FN(skb_change_proto), FN(skb_change_type), FN(skb_under_cgroup), FN(get_hash_recalc), FN(get_current_task), FN(probe_write_user), FN(current_task_under_cgroup), FN(skb_change_tail), FN(skb_pull_data), FN(csum_update), FN(set_hash_invalid), FN(get_numa_node_id), FN(skb_change_head), FN(xdp_adjust_head), FN(probe_read_str), FN(get_socket_cookie), FN(get_socket_uid), FN(set_hash), FN(setsockopt), FN(skb_adjust_room), FN(redirect_map), FN(sk_redirect_map), FN(sock_map_update), FN(xdp_adjust_meta), FN(perf_event_read_value), FN(perf_prog_read_value), FN(getsockopt), FN(override_return), FN(sock_ops_cb_flags_set), FN(msg_redirect_map), FN(msg_apply_bytes), FN(msg_cork_bytes), FN(msg_pull_data), FN(bind), FN(xdp_adjust_tail), FN(skb_get_xfrm_state), FN(get_stack), FN(skb_load_bytes_relative), FN(fib_lookup), FN(sock_hash_update), FN(msg_redirect_hash), FN(sk_redirect_hash), FN(lwt_push_encap), FN(lwt_seg6_store_bytes), FN(lwt_seg6_adjust_srh), FN(lwt_seg6_action), FN(rc_repeat), FN(rc_keydown), FN(skb_cgroup_id), FN(get_current_cgroup_id), FN(get_local_storage), FN(sk_select_reuseport), FN(skb_ancestor_cgroup_id), FN(sk_lookup_tcp), FN(sk_lookup_udp), FN(sk_release), FN(map_push_elem), FN(map_pop_elem), FN(map_peek_elem), FN(msg_push_data), FN(msg_pop_data), FN(rc_pointer_rel), FN(spin_lock), FN(spin_unlock), FN(sk_fullsock), FN(tcp_sock), FN(skb_ecn_set_ce), FN(get_listener_sock), FN(skc_lookup_tcp), FN(tcp_check_syncookie), FN(sysctl_get_name), FN(sysctl_get_current_value), FN(sysctl_get_new_value), FN(sysctl_set_new_value), FN(strtol), FN(strtoul), FN(sk_storage_get), FN(sk_storage_delete), FN(send_signal), FN(tcp_gen_syncookie), FN(skb_output), FN(probe_read_user), FN(probe_read_kernel), FN(probe_read_user_str), FN(probe_read_kernel_str), FN(tcp_send_ack), FN(send_signal_thread), FN(jiffies64), FN(read_branch_records), FN(get_ns_current_pid_tgid), FN(xdp_output), FN(get_netns_cookie), FN(get_current_ancestor_cgroup_id), FN(sk_assign), FN(ktime_get_boot_ns), FN(seq_printf), FN(seq_write), FN(sk_cgroup_id), FN(sk_ancestor_cgroup_id), FN(ringbuf_output), FN(ringbuf_reserve), FN(ringbuf_submit), FN(ringbuf_discard), FN(ringbuf_query), FN(csum_level), FN(skc_to_tcp6_sock), FN(skc_to_tcp_sock), FN(skc_to_tcp_timewait_sock), FN(skc_to_tcp_request_sock), FN(skc_to_udp6_sock), FN(get_task_stack), FN(load_hdr_opt), FN(store_hdr_opt), FN(reserve_hdr_opt), FN(inode_storage_get), FN(inode_storage_delete), FN(d_path), FN(copy_from_user), FN(snprintf_btf), FN(seq_printf_btf), FN(skb_cgroup_classid), FN(redirect_neigh), FN(per_cpu_ptr), FN(this_cpu_ptr), FN(redirect_peer), FN(task_storage_get), FN(task_storage_delete), FN(get_current_task_btf), FN(bprm_opts_set), FN(ktime_get_coarse_ns), FN(ima_inode_hash), FN(sock_from_file), FN(check_mtu),
 #define __BPF_ENUM_FN(x) BPF_FUNC_ ##x
 enum bpf_func_id {
   __BPF_FUNC_MAPPER(__BPF_ENUM_FN) __BPF_FUNC_MAX_ID,
@@ -783,6 +787,7 @@
   __aligned_u64 prog_tags;
   __u64 run_time_ns;
   __u64 run_cnt;
+  __u64 recursion_misses;
 } __attribute__((aligned(8)));
 struct bpf_map_info {
   __u32 type;
@@ -1001,7 +1006,10 @@
   __u8 l4_protocol;
   __be16 sport;
   __be16 dport;
-  __u16 tot_len;
+  union {
+    __u16 tot_len;
+    __u16 mtu_result;
+  };
   __u32 ifindex;
   union {
     __u8 tos;
@@ -1028,6 +1036,14 @@
     __u32 ipv6_nh[4];
   };
 };
+enum bpf_check_mtu_flags {
+  BPF_MTU_CHK_SEGS = (1U << 0),
+};
+enum bpf_check_mtu_ret {
+  BPF_MTU_CHK_RET_SUCCESS,
+  BPF_MTU_CHK_RET_FRAG_NEEDED,
+  BPF_MTU_CHK_RET_SEGS_TOOBIG,
+};
 enum bpf_task_fd_type {
   BPF_FD_TYPE_RAW_TRACEPOINT,
   BPF_FD_TYPE_TRACEPOINT,
diff --git a/libc/kernel/uapi/linux/can.h b/libc/kernel/uapi/linux/can.h
index 46eafc5..59fc31e 100644
--- a/libc/kernel/uapi/linux/can.h
+++ b/libc/kernel/uapi/linux/can.h
@@ -40,7 +40,7 @@
   union {
     __u8 len;
     __u8 can_dlc;
-  };
+  } __attribute__((packed));
   __u8 __pad;
   __u8 __res0;
   __u8 len8_dlc;
diff --git a/libc/kernel/uapi/linux/ccs.h b/libc/kernel/uapi/linux/ccs.h
new file mode 100644
index 0000000..53c88af
--- /dev/null
+++ b/libc/kernel/uapi/linux/ccs.h
@@ -0,0 +1,30 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __UAPI_CCS_H__
+#define __UAPI_CCS_H__
+#include <linux/v4l2-controls.h>
+#define V4L2_CID_CCS_ANALOGUE_GAIN_M0 (V4L2_CID_USER_CCS_BASE + 1)
+#define V4L2_CID_CCS_ANALOGUE_GAIN_C0 (V4L2_CID_USER_CCS_BASE + 2)
+#define V4L2_CID_CCS_ANALOGUE_GAIN_M1 (V4L2_CID_USER_CCS_BASE + 3)
+#define V4L2_CID_CCS_ANALOGUE_GAIN_C1 (V4L2_CID_USER_CCS_BASE + 4)
+#define V4L2_CID_CCS_ANALOGUE_LINEAR_GAIN (V4L2_CID_USER_CCS_BASE + 5)
+#define V4L2_CID_CCS_ANALOGUE_EXPONENTIAL_GAIN (V4L2_CID_USER_CCS_BASE + 6)
+#define V4L2_CID_CCS_SHADING_CORRECTION (V4L2_CID_USER_CCS_BASE + 8)
+#define V4L2_CID_CCS_LUMINANCE_CORRECTION_LEVEL (V4L2_CID_USER_CCS_BASE + 9)
+#endif
diff --git a/libc/kernel/uapi/linux/cxl_mem.h b/libc/kernel/uapi/linux/cxl_mem.h
new file mode 100644
index 0000000..851bd79
--- /dev/null
+++ b/libc/kernel/uapi/linux/cxl_mem.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_CXL_MEM_H_
+#define _UAPI_CXL_MEM_H_
+#include <linux/types.h>
+#define CXL_MEM_QUERY_COMMANDS _IOR(0xCE, 1, struct cxl_mem_query_commands)
+#define CXL_MEM_SEND_COMMAND _IOWR(0xCE, 2, struct cxl_send_command)
+#define CXL_CMDS ___C(INVALID, "Invalid Command"), ___C(IDENTIFY, "Identify Command"), ___C(RAW, "Raw device command"), ___C(GET_SUPPORTED_LOGS, "Get Supported Logs"), ___C(GET_FW_INFO, "Get FW Info"), ___C(GET_PARTITION_INFO, "Get Partition Information"), ___C(GET_LSA, "Get Label Storage Area"), ___C(GET_HEALTH_INFO, "Get Health Info"), ___C(GET_LOG, "Get Log"), ___C(MAX, "invalid / last command")
+#define ___C(a,b) CXL_MEM_COMMAND_ID_ ##a
+enum {
+  CXL_CMDS
+};
+#undef ___C
+#define ___C(a,b) { b }
+static const struct {
+  const char * name;
+} cxl_command_names[] = {
+  CXL_CMDS
+};
+#undef ___C
+struct cxl_command_info {
+  __u32 id;
+  __u32 flags;
+#define CXL_MEM_COMMAND_FLAG_MASK GENMASK(0, 0)
+  __s32 size_in;
+  __s32 size_out;
+};
+struct cxl_mem_query_commands {
+  __u32 n_commands;
+  __u32 rsvd;
+  struct cxl_command_info __user commands[];
+};
+struct cxl_send_command {
+  __u32 id;
+  __u32 flags;
+  union {
+    struct {
+      __u16 opcode;
+      __u16 rsvd;
+    } raw;
+    __u32 rsvd;
+  };
+  __u32 retval;
+  struct {
+    __s32 size;
+    __u32 rsvd;
+    __u64 payload;
+  } in;
+  struct {
+    __s32 size;
+    __u32 rsvd;
+    __u64 payload;
+  } out;
+};
+#endif
diff --git a/libc/kernel/uapi/linux/devlink.h b/libc/kernel/uapi/linux/devlink.h
index 306557a..e6e006f 100644
--- a/libc/kernel/uapi/linux/devlink.h
+++ b/libc/kernel/uapi/linux/devlink.h
@@ -139,6 +139,7 @@
   DEVLINK_PORT_FLAVOUR_PCI_VF,
   DEVLINK_PORT_FLAVOUR_VIRTUAL,
   DEVLINK_PORT_FLAVOUR_UNUSED,
+  DEVLINK_PORT_FLAVOUR_PCI_SF,
 };
 enum devlink_param_cmode {
   DEVLINK_PARAM_CMODE_RUNTIME,
@@ -368,6 +369,7 @@
   DEVLINK_ATTR_REMOTE_RELOAD_STATS,
   DEVLINK_ATTR_RELOAD_ACTION_INFO,
   DEVLINK_ATTR_RELOAD_ACTION_STATS,
+  DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
   __DEVLINK_ATTR_MAX,
   DEVLINK_ATTR_MAX = __DEVLINK_ATTR_MAX - 1
 };
@@ -401,7 +403,17 @@
 enum devlink_port_function_attr {
   DEVLINK_PORT_FUNCTION_ATTR_UNSPEC,
   DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR,
+  DEVLINK_PORT_FN_ATTR_STATE,
+  DEVLINK_PORT_FN_ATTR_OPSTATE,
   __DEVLINK_PORT_FUNCTION_ATTR_MAX,
   DEVLINK_PORT_FUNCTION_ATTR_MAX = __DEVLINK_PORT_FUNCTION_ATTR_MAX - 1
 };
+enum devlink_port_fn_state {
+  DEVLINK_PORT_FN_STATE_INACTIVE,
+  DEVLINK_PORT_FN_STATE_ACTIVE,
+};
+enum devlink_port_fn_opstate {
+  DEVLINK_PORT_FN_OPSTATE_DETACHED,
+  DEVLINK_PORT_FN_OPSTATE_ATTACHED,
+};
 #endif
diff --git a/libc/kernel/uapi/linux/dm-ioctl.h b/libc/kernel/uapi/linux/dm-ioctl.h
index bfa4cd3..4c0a9f0 100644
--- a/libc/kernel/uapi/linux/dm-ioctl.h
+++ b/libc/kernel/uapi/linux/dm-ioctl.h
@@ -104,9 +104,9 @@
 #define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
 #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
 #define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 43
+#define DM_VERSION_MINOR 44
 #define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl(2020-10-01)"
+#define DM_VERSION_EXTRA "-ioctl(2021-02-01)"
 #define DM_READONLY_FLAG (1 << 0)
 #define DM_SUSPEND_FLAG (1 << 1)
 #define DM_PERSISTENT_DEV_FLAG (1 << 3)
diff --git a/libc/kernel/uapi/linux/ethtool_netlink.h b/libc/kernel/uapi/linux/ethtool_netlink.h
index 95761dd..67091a1 100644
--- a/libc/kernel/uapi/linux/ethtool_netlink.h
+++ b/libc/kernel/uapi/linux/ethtool_netlink.h
@@ -178,6 +178,7 @@
   ETHTOOL_A_LINKMODES_DUPLEX,
   ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG,
   ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE,
+  ETHTOOL_A_LINKMODES_LANES,
   __ETHTOOL_A_LINKMODES_CNT,
   ETHTOOL_A_LINKMODES_MAX = __ETHTOOL_A_LINKMODES_CNT - 1
 };
diff --git a/libc/kernel/uapi/linux/fsl_mc.h b/libc/kernel/uapi/linux/fsl_mc.h
new file mode 100644
index 0000000..721da93
--- /dev/null
+++ b/libc/kernel/uapi/linux/fsl_mc.h
@@ -0,0 +1,30 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_FSL_MC_H_
+#define _UAPI_FSL_MC_H_
+#include <linux/types.h>
+#define MC_CMD_NUM_OF_PARAMS 7
+struct fsl_mc_command {
+  __le64 header;
+  __le64 params[MC_CMD_NUM_OF_PARAMS];
+};
+#define FSL_MC_SEND_CMD_IOCTL_TYPE 'R'
+#define FSL_MC_SEND_CMD_IOCTL_SEQ 0xE0
+#define FSL_MC_SEND_MC_COMMAND _IOWR(FSL_MC_SEND_CMD_IOCTL_TYPE, FSL_MC_SEND_CMD_IOCTL_SEQ, struct fsl_mc_command)
+#endif
diff --git a/libc/kernel/uapi/linux/fsverity.h b/libc/kernel/uapi/linux/fsverity.h
index da8b99d..ff1603c 100644
--- a/libc/kernel/uapi/linux/fsverity.h
+++ b/libc/kernel/uapi/linux/fsverity.h
@@ -55,6 +55,17 @@
   __le16 digest_size;
   __u8 digest[];
 };
+#define FS_VERITY_METADATA_TYPE_MERKLE_TREE 1
+#define FS_VERITY_METADATA_TYPE_DESCRIPTOR 2
+#define FS_VERITY_METADATA_TYPE_SIGNATURE 3
+struct fsverity_read_metadata_arg {
+  __u64 metadata_type;
+  __u64 offset;
+  __u64 length;
+  __u64 buf_ptr;
+  __u64 __reserved;
+};
 #define FS_IOC_ENABLE_VERITY _IOW('f', 133, struct fsverity_enable_arg)
 #define FS_IOC_MEASURE_VERITY _IOWR('f', 134, struct fsverity_digest)
+#define FS_IOC_READ_VERITY_METADATA _IOWR('f', 135, struct fsverity_read_metadata_arg)
 #endif
diff --git a/libc/kernel/uapi/linux/gfs2_ondisk.h b/libc/kernel/uapi/linux/gfs2_ondisk.h
index a8fb59e..1ce4278 100644
--- a/libc/kernel/uapi/linux/gfs2_ondisk.h
+++ b/libc/kernel/uapi/linux/gfs2_ondisk.h
@@ -45,7 +45,7 @@
 #define GFS2_FORMAT_RI 1100
 #define GFS2_FORMAT_DE 1200
 #define GFS2_FORMAT_QU 1500
-#define GFS2_FORMAT_FS 1801
+#define GFS2_FORMAT_FS 1802
 #define GFS2_FORMAT_MULTI 1900
 struct gfs2_inum {
   __be64 no_formal_ino;
@@ -260,7 +260,8 @@
 #define GFS2_EATYPE_USR 1
 #define GFS2_EATYPE_SYS 2
 #define GFS2_EATYPE_SECURITY 3
-#define GFS2_EATYPE_LAST 3
+#define GFS2_EATYPE_TRUSTED 4
+#define GFS2_EATYPE_LAST 4
 #define GFS2_EATYPE_VALID(x) ((x) <= GFS2_EATYPE_LAST)
 #define GFS2_EAFLAG_LAST 0x01
 struct gfs2_ea_header {
diff --git a/libc/kernel/uapi/linux/i2c.h b/libc/kernel/uapi/linux/i2c.h
index dc1e96a..fe578e8 100644
--- a/libc/kernel/uapi/linux/i2c.h
+++ b/libc/kernel/uapi/linux/i2c.h
@@ -60,6 +60,7 @@
 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_PROC_CALL | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_PEC)
+#define I2C_FUNC_SMBUS_EMUL_ALL (I2C_FUNC_SMBUS_EMUL | I2C_FUNC_SMBUS_READ_BLOCK_DATA | I2C_FUNC_SMBUS_BLOCK_PROC_CALL)
 #define I2C_SMBUS_BLOCK_MAX 32
 union i2c_smbus_data {
   __u8 byte;
diff --git a/libc/kernel/uapi/linux/idxd.h b/libc/kernel/uapi/linux/idxd.h
index 8724149..4f1282e 100644
--- a/libc/kernel/uapi/linux/idxd.h
+++ b/libc/kernel/uapi/linux/idxd.h
@@ -231,8 +231,8 @@
       uint32_t invalid_flags : 24;
       uint32_t rsvd2 : 8;
     };
-    uint16_t delta_rec_size;
-    uint16_t crc_val;
+    uint32_t delta_rec_size;
+    uint32_t crc_val;
     struct {
       uint32_t dif_chk_ref_tag;
       uint16_t dif_chk_app_tag_mask;
diff --git a/libc/kernel/uapi/linux/if_bonding.h b/libc/kernel/uapi/linux/if_bonding.h
index 0079f30..60abfde 100644
--- a/libc/kernel/uapi/linux/if_bonding.h
+++ b/libc/kernel/uapi/linux/if_bonding.h
@@ -50,6 +50,7 @@
 #define BOND_XMIT_POLICY_LAYER23 2
 #define BOND_XMIT_POLICY_ENCAP23 3
 #define BOND_XMIT_POLICY_ENCAP34 4
+#define BOND_XMIT_POLICY_VLAN_SRCMAC 5
 #define LACP_STATE_LACP_ACTIVITY 0x1
 #define LACP_STATE_LACP_TIMEOUT 0x2
 #define LACP_STATE_AGGREGATION 0x4
diff --git a/libc/kernel/uapi/linux/if_link.h b/libc/kernel/uapi/linux/if_link.h
index 3db8a4f..2a5ba5a 100644
--- a/libc/kernel/uapi/linux/if_link.h
+++ b/libc/kernel/uapi/linux/if_link.h
@@ -282,6 +282,8 @@
   IFLA_BRPORT_BACKUP_PORT,
   IFLA_BRPORT_MRP_RING_OPEN,
   IFLA_BRPORT_MRP_IN_OPEN,
+  IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
+  IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
   __IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/libc/kernel/uapi/linux/incrementalfs.h b/libc/kernel/uapi/linux/incrementalfs.h
index 65d825c..622a998 100644
--- a/libc/kernel/uapi/linux/incrementalfs.h
+++ b/libc/kernel/uapi/linux/incrementalfs.h
@@ -23,7 +23,7 @@
 #include <linux/types.h>
 #include <linux/xattr.h>
 #define INCFS_NAME "incremental-fs"
-#define INCFS_MAGIC_NUMBER (unsigned long) (0x5346434e49ul)
+#define INCFS_MAGIC_NUMBER (0x5346434e49ul & ULONG_MAX)
 #define INCFS_DATA_FILE_BLOCK_SIZE 4096
 #define INCFS_HEADER_VER 1
 #define INCFS_MAX_HASH_SIZE 32
@@ -50,6 +50,7 @@
 #define INCFS_IOC_GET_BLOCK_COUNT _IOR(INCFS_IOCTL_BASE_CODE, 36, struct incfs_get_block_count_args)
 #define INCFS_IOC_GET_READ_TIMEOUTS _IOR(INCFS_IOCTL_BASE_CODE, 37, struct incfs_get_read_timeouts_args)
 #define INCFS_IOC_SET_READ_TIMEOUTS _IOW(INCFS_IOCTL_BASE_CODE, 38, struct incfs_set_read_timeouts_args)
+#define INCFS_IOC_GET_LAST_READ_ERROR _IOW(INCFS_IOCTL_BASE_CODE, 39, struct incfs_get_last_read_error_args)
 #define INCFS_FEATURE_FLAG_COREFS "corefs"
 #define INCFS_FEATURE_FLAG_ZSTD "zstd"
 #define INCFS_FEATURE_FLAG_V2 "v2"
@@ -165,4 +166,11 @@
   __aligned_u64 timeouts_array;
   __u32 timeouts_array_size;
 };
+struct incfs_get_last_read_error_args {
+  incfs_uuid_t file_id_out;
+  __u64 time_us_out;
+  __u32 page_out;
+  __u32 errno_out;
+  __u64 reserved;
+};
 #endif
diff --git a/libc/kernel/uapi/linux/io_uring.h b/libc/kernel/uapi/linux/io_uring.h
index ea9fcdb..fa59d39 100644
--- a/libc/kernel/uapi/linux/io_uring.h
+++ b/libc/kernel/uapi/linux/io_uring.h
@@ -191,6 +191,7 @@
 #define IORING_FEAT_POLL_32BITS (1U << 6)
 #define IORING_FEAT_SQPOLL_NONFIXED (1U << 7)
 #define IORING_FEAT_EXT_ARG (1U << 8)
+#define IORING_FEAT_NATIVE_WORKERS (1U << 9)
 enum {
   IORING_REGISTER_BUFFERS = 0,
   IORING_UNREGISTER_BUFFERS = 1,
@@ -212,6 +213,12 @@
   __u32 resv;
   __aligned_u64 fds;
 };
+struct io_uring_rsrc_update {
+  __u32 offset;
+  __u32 resv;
+  __aligned_u64 data;
+};
+#define IORING_REGISTER_FILES_SKIP (- 2)
 #define IO_URING_OP_SUPPORTED (1U << 0)
 struct io_uring_probe_op {
   __u8 op;
diff --git a/libc/kernel/uapi/linux/ipv6.h b/libc/kernel/uapi/linux/ipv6.h
index 7cd6cb0..438cacc 100644
--- a/libc/kernel/uapi/linux/ipv6.h
+++ b/libc/kernel/uapi/linux/ipv6.h
@@ -143,6 +143,7 @@
   DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN,
   DEVCONF_NDISC_TCLASS,
   DEVCONF_RPL_SEG_ENABLED,
+  DEVCONF_RA_DEFRTR_METRIC,
   DEVCONF_MAX
 };
 #endif
diff --git a/libc/kernel/uapi/linux/kvm.h b/libc/kernel/uapi/linux/kvm.h
index 1153458..81fa779 100644
--- a/libc/kernel/uapi/linux/kvm.h
+++ b/libc/kernel/uapi/linux/kvm.h
@@ -164,6 +164,19 @@
     } syndbg;
   } u;
 };
+struct kvm_xen_exit {
+#define KVM_EXIT_XEN_HCALL 1
+  __u32 type;
+  union {
+    struct {
+      __u32 longmode;
+      __u32 cpl;
+      __u64 input;
+      __u64 result;
+      __u64 params[6];
+    } hcall;
+  } u;
+};
 #define KVM_S390_GET_SKEYS_NONE 1
 #define KVM_S390_SKEYS_MAX 1048576
 #define KVM_EXIT_UNKNOWN 0
@@ -199,6 +212,8 @@
 #define KVM_EXIT_X86_WRMSR 30
 #define KVM_EXIT_DIRTY_RING_FULL 31
 #define KVM_EXIT_AP_RESET_HOLD 32
+#define KVM_EXIT_X86_BUS_LOCK 33
+#define KVM_EXIT_XEN 34
 #define KVM_INTERNAL_ERROR_EMULATION 1
 #define KVM_INTERNAL_ERROR_SIMUL_EX 2
 #define KVM_INTERNAL_ERROR_DELIVERY_EV 3
@@ -336,6 +351,7 @@
       __u32 index;
       __u64 data;
     } msr;
+    struct kvm_xen_exit xen;
     char padding[256];
   };
 #define SYNC_REGS_SIZE_BYTES 2048
@@ -836,6 +852,8 @@
 #define KVM_CAP_ENFORCE_PV_FEATURE_CPUID 190
 #define KVM_CAP_SYS_HYPERV_CPUID 191
 #define KVM_CAP_DIRTY_LOG_RING 192
+#define KVM_CAP_X86_BUS_LOCK_EXIT 193
+#define KVM_CAP_PPC_DAWR1 194
 #ifdef KVM_CAP_IRQ_ROUTING
 struct kvm_irq_routing_irqchip {
   __u32 irqchip;
@@ -896,6 +914,10 @@
 };
 #endif
 #ifdef KVM_CAP_XEN_HVM
+#define KVM_XEN_HVM_CONFIG_HYPERCALL_MSR (1 << 0)
+#define KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL (1 << 1)
+#define KVM_XEN_HVM_CONFIG_SHARED_INFO (1 << 2)
+#define KVM_XEN_HVM_CONFIG_RUNSTATE (1 << 3)
 struct kvm_xen_hvm_config {
   __u32 flags;
   __u32 msr;
@@ -1189,6 +1211,47 @@
 #define KVM_S390_PV_COMMAND _IOWR(KVMIO, 0xc5, struct kvm_pv_cmd)
 #define KVM_X86_SET_MSR_FILTER _IOW(KVMIO, 0xc6, struct kvm_msr_filter)
 #define KVM_RESET_DIRTY_RINGS _IO(KVMIO, 0xc7)
+#define KVM_XEN_HVM_GET_ATTR _IOWR(KVMIO, 0xc8, struct kvm_xen_hvm_attr)
+#define KVM_XEN_HVM_SET_ATTR _IOW(KVMIO, 0xc9, struct kvm_xen_hvm_attr)
+struct kvm_xen_hvm_attr {
+  __u16 type;
+  __u16 pad[3];
+  union {
+    __u8 long_mode;
+    __u8 vector;
+    struct {
+      __u64 gfn;
+    } shared_info;
+    __u64 pad[8];
+  } u;
+};
+#define KVM_XEN_ATTR_TYPE_LONG_MODE 0x0
+#define KVM_XEN_ATTR_TYPE_SHARED_INFO 0x1
+#define KVM_XEN_ATTR_TYPE_UPCALL_VECTOR 0x2
+#define KVM_XEN_VCPU_GET_ATTR _IOWR(KVMIO, 0xca, struct kvm_xen_vcpu_attr)
+#define KVM_XEN_VCPU_SET_ATTR _IOW(KVMIO, 0xcb, struct kvm_xen_vcpu_attr)
+struct kvm_xen_vcpu_attr {
+  __u16 type;
+  __u16 pad[3];
+  union {
+    __u64 gpa;
+    __u64 pad[8];
+    struct {
+      __u64 state;
+      __u64 state_entry_time;
+      __u64 time_running;
+      __u64 time_runnable;
+      __u64 time_blocked;
+      __u64 time_offline;
+    } runstate;
+  } u;
+};
+#define KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO 0x0
+#define KVM_XEN_VCPU_ATTR_TYPE_VCPU_TIME_INFO 0x1
+#define KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADDR 0x2
+#define KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_CURRENT 0x3
+#define KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_DATA 0x4
+#define KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST 0x5
 enum sev_cmd_id {
   KVM_SEV_INIT = 0,
   KVM_SEV_ES_INIT,
@@ -1210,6 +1273,7 @@
   KVM_SEV_DBG_DECRYPT,
   KVM_SEV_DBG_ENCRYPT,
   KVM_SEV_CERT_EXPORT,
+  KVM_SEV_GET_ATTESTATION_REPORT,
   KVM_SEV_NR_MAX,
 };
 struct kvm_sev_cmd {
@@ -1252,6 +1316,11 @@
   __u64 dst_uaddr;
   __u32 len;
 };
+struct kvm_sev_attestation_report {
+  __u8 mnonce[16];
+  __u64 uaddr;
+  __u32 len;
+};
 #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
 #define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1)
 #define KVM_DEV_ASSIGN_MASK_INTX (1 << 2)
@@ -1320,4 +1389,6 @@
   __u32 slot;
   __u64 offset;
 };
+#define KVM_BUS_LOCK_DETECTION_OFF (1 << 0)
+#define KVM_BUS_LOCK_DETECTION_EXIT (1 << 1)
 #endif
diff --git a/libc/kernel/uapi/linux/l2tp.h b/libc/kernel/uapi/linux/l2tp.h
index c65f7a9..a054819 100644
--- a/libc/kernel/uapi/linux/l2tp.h
+++ b/libc/kernel/uapi/linux/l2tp.h
@@ -104,6 +104,7 @@
   L2TP_ATTR_RX_ERRORS,
   L2TP_ATTR_STATS_PAD,
   L2TP_ATTR_RX_COOKIE_DISCARDS,
+  L2TP_ATTR_RX_INVALID,
   __L2TP_ATTR_STATS_MAX,
 };
 #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1)
diff --git a/libc/kernel/uapi/linux/media.h b/libc/kernel/uapi/linux/media.h
index fe29568..5c8efcd 100644
--- a/libc/kernel/uapi/linux/media.h
+++ b/libc/kernel/uapi/linux/media.h
@@ -61,6 +61,7 @@
 #define MEDIA_ENT_F_PROC_VIDEO_STATISTICS (MEDIA_ENT_F_BASE + 0x4006)
 #define MEDIA_ENT_F_PROC_VIDEO_ENCODER (MEDIA_ENT_F_BASE + 0x4007)
 #define MEDIA_ENT_F_PROC_VIDEO_DECODER (MEDIA_ENT_F_BASE + 0x4008)
+#define MEDIA_ENT_F_PROC_VIDEO_ISP (MEDIA_ENT_F_BASE + 0x4009)
 #define MEDIA_ENT_F_VID_MUX (MEDIA_ENT_F_BASE + 0x5001)
 #define MEDIA_ENT_F_VID_IF_BRIDGE (MEDIA_ENT_F_BASE + 0x5002)
 #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
diff --git a/libc/kernel/uapi/linux/mempolicy.h b/libc/kernel/uapi/linux/mempolicy.h
index 6f721f6..5425c0e 100644
--- a/libc/kernel/uapi/linux/mempolicy.h
+++ b/libc/kernel/uapi/linux/mempolicy.h
@@ -29,7 +29,8 @@
 };
 #define MPOL_F_STATIC_NODES (1 << 15)
 #define MPOL_F_RELATIVE_NODES (1 << 14)
-#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES)
+#define MPOL_F_NUMA_BALANCING (1 << 13)
+#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES | MPOL_F_NUMA_BALANCING)
 #define MPOL_F_NODE (1 << 0)
 #define MPOL_F_ADDR (1 << 1)
 #define MPOL_F_MEMS_ALLOWED (1 << 2)
diff --git a/libc/kernel/uapi/linux/misc/bcm_vk.h b/libc/kernel/uapi/linux/misc/bcm_vk.h
new file mode 100644
index 0000000..b1b966d
--- /dev/null
+++ b/libc/kernel/uapi/linux/misc/bcm_vk.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __UAPI_LINUX_MISC_BCM_VK_H
+#define __UAPI_LINUX_MISC_BCM_VK_H
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#define BCM_VK_MAX_FILENAME 64
+struct vk_image {
+  __u32 type;
+#define VK_IMAGE_TYPE_BOOT1 1
+#define VK_IMAGE_TYPE_BOOT2 2
+  __u8 filename[BCM_VK_MAX_FILENAME];
+};
+struct vk_reset {
+  __u32 arg1;
+  __u32 arg2;
+};
+#define VK_MAGIC 0x5e
+#define VK_IOCTL_LOAD_IMAGE _IOW(VK_MAGIC, 0x2, struct vk_image)
+#define VK_IOCTL_RESET _IOW(VK_MAGIC, 0x4, struct vk_reset)
+#define VK_BAR_FWSTS 0x41c
+#define VK_BAR_COP_FWSTS 0x428
+#define VK_FWSTS_RELOCATION_ENTRY (1UL << 0)
+#define VK_FWSTS_RELOCATION_EXIT (1UL << 1)
+#define VK_FWSTS_INIT_START (1UL << 2)
+#define VK_FWSTS_ARCH_INIT_DONE (1UL << 3)
+#define VK_FWSTS_PRE_KNL1_INIT_DONE (1UL << 4)
+#define VK_FWSTS_PRE_KNL2_INIT_DONE (1UL << 5)
+#define VK_FWSTS_POST_KNL_INIT_DONE (1UL << 6)
+#define VK_FWSTS_INIT_DONE (1UL << 7)
+#define VK_FWSTS_APP_INIT_START (1UL << 8)
+#define VK_FWSTS_APP_INIT_DONE (1UL << 9)
+#define VK_FWSTS_MASK 0xffffffff
+#define VK_FWSTS_READY (VK_FWSTS_INIT_START | VK_FWSTS_ARCH_INIT_DONE | VK_FWSTS_PRE_KNL1_INIT_DONE | VK_FWSTS_PRE_KNL2_INIT_DONE | VK_FWSTS_POST_KNL_INIT_DONE | VK_FWSTS_INIT_DONE | VK_FWSTS_APP_INIT_START | VK_FWSTS_APP_INIT_DONE)
+#define VK_FWSTS_APP_DEINIT_START (1UL << 23)
+#define VK_FWSTS_APP_DEINIT_DONE (1UL << 24)
+#define VK_FWSTS_DRV_DEINIT_START (1UL << 25)
+#define VK_FWSTS_DRV_DEINIT_DONE (1UL << 26)
+#define VK_FWSTS_RESET_DONE (1UL << 27)
+#define VK_FWSTS_DEINIT_TRIGGERED (VK_FWSTS_APP_DEINIT_START | VK_FWSTS_APP_DEINIT_DONE | VK_FWSTS_DRV_DEINIT_START | VK_FWSTS_DRV_DEINIT_DONE)
+#define VK_FWSTS_RESET_REASON_SHIFT 28
+#define VK_FWSTS_RESET_REASON_MASK (0xf << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_SYS_PWRUP (0x0 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_MBOX_DB (0x1 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_M7_WDOG (0x2 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_TEMP (0x3 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_FLR (0x4 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_HOT (0x5 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_WARM (0x6 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_COLD (0x7 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_L1 (0x8 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_L0 (0x9 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_UNKNOWN (0xf << VK_FWSTS_RESET_REASON_SHIFT)
+#endif
diff --git a/libc/kernel/uapi/linux/mount.h b/libc/kernel/uapi/linux/mount.h
index 99c2d98..5a112c9 100644
--- a/libc/kernel/uapi/linux/mount.h
+++ b/libc/kernel/uapi/linux/mount.h
@@ -18,6 +18,7 @@
  ****************************************************************************/
 #ifndef _UAPI_LINUX_MOUNT_H
 #define _UAPI_LINUX_MOUNT_H
+#include <linux/types.h>
 #define MS_RDONLY 1
 #define MS_NOSUID 2
 #define MS_NODEV 4
@@ -87,4 +88,12 @@
 #define MOUNT_ATTR_NOATIME 0x00000010
 #define MOUNT_ATTR_STRICTATIME 0x00000020
 #define MOUNT_ATTR_NODIRATIME 0x00000080
+#define MOUNT_ATTR_IDMAP 0x00100000
+struct mount_attr {
+  __u64 attr_set;
+  __u64 attr_clr;
+  __u64 propagation;
+  __u64 userns_fd;
+};
+#define MOUNT_ATTR_SIZE_VER0 32
 #endif
diff --git a/libc/kernel/uapi/linux/mptcp.h b/libc/kernel/uapi/linux/mptcp.h
index deaa1bf..b15adf5 100644
--- a/libc/kernel/uapi/linux/mptcp.h
+++ b/libc/kernel/uapi/linux/mptcp.h
@@ -47,6 +47,7 @@
 #define MPTCP_SUBFLOW_ATTR_MAX (__MPTCP_SUBFLOW_ATTR_MAX - 1)
 #define MPTCP_PM_NAME "mptcp_pm"
 #define MPTCP_PM_CMD_GRP_NAME "mptcp_pm_cmds"
+#define MPTCP_PM_EV_GRP_NAME "mptcp_pm_events"
 #define MPTCP_PM_VER 0x1
 enum {
   MPTCP_PM_ATTR_UNSPEC,
@@ -79,6 +80,7 @@
   MPTCP_PM_CMD_FLUSH_ADDRS,
   MPTCP_PM_CMD_SET_LIMITS,
   MPTCP_PM_CMD_GET_LIMITS,
+  MPTCP_PM_CMD_SET_FLAGS,
   __MPTCP_PM_CMD_AFTER_LAST
 };
 #define MPTCP_INFO_FLAG_FALLBACK _BITUL(0)
@@ -95,5 +97,38 @@
   __u64 mptcpi_write_seq;
   __u64 mptcpi_snd_una;
   __u64 mptcpi_rcv_nxt;
+  __u8 mptcpi_local_addr_used;
+  __u8 mptcpi_local_addr_max;
 };
+enum mptcp_event_type {
+  MPTCP_EVENT_UNSPEC = 0,
+  MPTCP_EVENT_CREATED = 1,
+  MPTCP_EVENT_ESTABLISHED = 2,
+  MPTCP_EVENT_CLOSED = 3,
+  MPTCP_EVENT_ANNOUNCED = 6,
+  MPTCP_EVENT_REMOVED = 7,
+  MPTCP_EVENT_SUB_ESTABLISHED = 10,
+  MPTCP_EVENT_SUB_CLOSED = 11,
+  MPTCP_EVENT_SUB_PRIORITY = 13,
+};
+enum mptcp_event_attr {
+  MPTCP_ATTR_UNSPEC = 0,
+  MPTCP_ATTR_TOKEN,
+  MPTCP_ATTR_FAMILY,
+  MPTCP_ATTR_LOC_ID,
+  MPTCP_ATTR_REM_ID,
+  MPTCP_ATTR_SADDR4,
+  MPTCP_ATTR_SADDR6,
+  MPTCP_ATTR_DADDR4,
+  MPTCP_ATTR_DADDR6,
+  MPTCP_ATTR_SPORT,
+  MPTCP_ATTR_DPORT,
+  MPTCP_ATTR_BACKUP,
+  MPTCP_ATTR_ERROR,
+  MPTCP_ATTR_FLAGS,
+  MPTCP_ATTR_TIMEOUT,
+  MPTCP_ATTR_IF_IDX,
+  __MPTCP_ATTR_AFTER_LAST
+};
+#define MPTCP_ATTR_MAX (__MPTCP_ATTR_AFTER_LAST - 1)
 #endif
diff --git a/libc/kernel/uapi/linux/netfilter/nf_tables.h b/libc/kernel/uapi/linux/netfilter/nf_tables.h
index b35dd65..0023a94 100644
--- a/libc/kernel/uapi/linux/netfilter/nf_tables.h
+++ b/libc/kernel/uapi/linux/netfilter/nf_tables.h
@@ -105,7 +105,9 @@
 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
 enum nft_table_flags {
   NFT_TABLE_F_DORMANT = 0x1,
+  NFT_TABLE_F_OWNER = 0x2,
 };
+#define NFT_TABLE_F_MASK (NFT_TABLE_F_DORMANT | NFT_TABLE_F_OWNER)
 enum nft_table_attributes {
   NFTA_TABLE_UNSPEC,
   NFTA_TABLE_NAME,
@@ -114,6 +116,7 @@
   NFTA_TABLE_HANDLE,
   NFTA_TABLE_PAD,
   NFTA_TABLE_USERDATA,
+  NFTA_TABLE_OWNER,
   __NFTA_TABLE_MAX
 };
 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
diff --git a/libc/kernel/uapi/linux/netfilter/nfnetlink_cthelper.h b/libc/kernel/uapi/linux/netfilter/nfnetlink_cthelper.h
index 0a8cd45..e8c2825 100644
--- a/libc/kernel/uapi/linux/netfilter/nfnetlink_cthelper.h
+++ b/libc/kernel/uapi/linux/netfilter/nfnetlink_cthelper.h
@@ -20,7 +20,7 @@
 #define _NFNL_CTHELPER_H_
 #define NFCT_HELPER_STATUS_DISABLED 0
 #define NFCT_HELPER_STATUS_ENABLED 1
-enum nfnl_acct_msg_types {
+enum nfnl_cthelper_msg_types {
   NFNL_MSG_CTHELPER_NEW,
   NFNL_MSG_CTHELPER_GET,
   NFNL_MSG_CTHELPER_DEL,
diff --git a/libc/kernel/uapi/linux/netfilter/xt_IDLETIMER.h b/libc/kernel/uapi/linux/netfilter/xt_IDLETIMER.h
index a59ae09..f4defb6 100644
--- a/libc/kernel/uapi/linux/netfilter/xt_IDLETIMER.h
+++ b/libc/kernel/uapi/linux/netfilter/xt_IDLETIMER.h
@@ -21,13 +21,9 @@
 #include <linux/types.h>
 #define MAX_IDLETIMER_LABEL_SIZE 28
 #define XT_IDLETIMER_ALARM 0x01
-#define NLMSG_MAX_SIZE 64
-#define NL_EVENT_TYPE_INACTIVE 0
-#define NL_EVENT_TYPE_ACTIVE 1
 struct idletimer_tg_info {
   __u32 timeout;
   char label[MAX_IDLETIMER_LABEL_SIZE];
-  __u8 send_nl_msg;
   struct idletimer_tg * timer __attribute__((aligned(8)));
 };
 struct idletimer_tg_info_v1 {
diff --git a/libc/kernel/uapi/linux/nfs3.h b/libc/kernel/uapi/linux/nfs3.h
index 3972d0b..af0d668 100644
--- a/libc/kernel/uapi/linux/nfs3.h
+++ b/libc/kernel/uapi/linux/nfs3.h
@@ -67,6 +67,11 @@
   NF3FIFO = 7,
   NF3BAD = 8
 };
+enum nfs3_time_how {
+  DONT_CHANGE = 0,
+  SET_TO_SERVER_TIME = 1,
+  SET_TO_CLIENT_TIME = 2,
+};
 struct nfs3_fh {
   unsigned short size;
   unsigned char data[NFS3_FHSIZE];
diff --git a/libc/kernel/uapi/linux/nl80211.h b/libc/kernel/uapi/linux/nl80211.h
index 0632ff2..5181160 100644
--- a/libc/kernel/uapi/linux/nl80211.h
+++ b/libc/kernel/uapi/linux/nl80211.h
@@ -495,6 +495,7 @@
   NL80211_ATTR_SAE_PWE,
   NL80211_ATTR_RECONNECT_REQUESTED,
   NL80211_ATTR_SAR_SPEC,
+  NL80211_ATTR_DISABLE_HE,
   __NL80211_ATTR_AFTER_LAST,
   NUM_NL80211_ATTR = __NL80211_ATTR_AFTER_LAST,
   NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
diff --git a/libc/kernel/uapi/linux/openat2.h b/libc/kernel/uapi/linux/openat2.h
index 27136af..d397a00 100644
--- a/libc/kernel/uapi/linux/openat2.h
+++ b/libc/kernel/uapi/linux/openat2.h
@@ -29,4 +29,5 @@
 #define RESOLVE_NO_SYMLINKS 0x04
 #define RESOLVE_BENEATH 0x08
 #define RESOLVE_IN_ROOT 0x10
+#define RESOLVE_CACHED 0x20
 #endif
diff --git a/libc/kernel/uapi/linux/perf_event.h b/libc/kernel/uapi/linux/perf_event.h
index be32b51..b09c5d8 100644
--- a/libc/kernel/uapi/linux/perf_event.h
+++ b/libc/kernel/uapi/linux/perf_event.h
@@ -103,9 +103,11 @@
   PERF_SAMPLE_CGROUP = 1U << 21,
   PERF_SAMPLE_DATA_PAGE_SIZE = 1U << 22,
   PERF_SAMPLE_CODE_PAGE_SIZE = 1U << 23,
-  PERF_SAMPLE_MAX = 1U << 24,
+  PERF_SAMPLE_WEIGHT_STRUCT = 1U << 24,
+  PERF_SAMPLE_MAX = 1U << 25,
   __PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63,
 };
+#define PERF_SAMPLE_WEIGHT_TYPE (PERF_SAMPLE_WEIGHT | PERF_SAMPLE_WEIGHT_STRUCT)
 enum perf_branch_sample_type_shift {
   PERF_SAMPLE_BRANCH_USER_SHIFT = 0,
   PERF_SAMPLE_BRANCH_KERNEL_SHIFT = 1,
@@ -205,7 +207,7 @@
   };
   __u64 sample_type;
   __u64 read_format;
-  __u64 disabled : 1, inherit : 1, pinned : 1, exclusive : 1, exclude_user : 1, exclude_kernel : 1, exclude_hv : 1, exclude_idle : 1, mmap : 1, comm : 1, freq : 1, inherit_stat : 1, enable_on_exec : 1, task : 1, watermark : 1, precise_ip : 2, mmap_data : 1, sample_id_all : 1, exclude_host : 1, exclude_guest : 1, exclude_callchain_kernel : 1, exclude_callchain_user : 1, mmap2 : 1, comm_exec : 1, use_clockid : 1, context_switch : 1, write_backward : 1, namespaces : 1, ksymbol : 1, bpf_event : 1, aux_output : 1, cgroup : 1, text_poke : 1, __reserved_1 : 30;
+  __u64 disabled : 1, inherit : 1, pinned : 1, exclusive : 1, exclude_user : 1, exclude_kernel : 1, exclude_hv : 1, exclude_idle : 1, mmap : 1, comm : 1, freq : 1, inherit_stat : 1, enable_on_exec : 1, task : 1, watermark : 1, precise_ip : 2, mmap_data : 1, sample_id_all : 1, exclude_host : 1, exclude_guest : 1, exclude_callchain_kernel : 1, exclude_callchain_user : 1, mmap2 : 1, comm_exec : 1, use_clockid : 1, context_switch : 1, write_backward : 1, namespaces : 1, ksymbol : 1, bpf_event : 1, aux_output : 1, cgroup : 1, text_poke : 1, build_id : 1, __reserved_1 : 29;
   union {
     __u32 wakeup_events;
     __u32 wakeup_watermark;
@@ -301,6 +303,7 @@
 #define PERF_RECORD_MISC_SWITCH_OUT (1 << 13)
 #define PERF_RECORD_MISC_EXACT_IP (1 << 14)
 #define PERF_RECORD_MISC_SWITCH_OUT_PREEMPT (1 << 14)
+#define PERF_RECORD_MISC_MMAP_BUILD_ID (1 << 14)
 #define PERF_RECORD_MISC_EXT_RESERVED (1 << 15)
 struct perf_event_header {
   __u32 type;
@@ -380,14 +383,14 @@
 union perf_mem_data_src {
   __u64 val;
   struct {
-    __u64 mem_op : 5, mem_lvl : 14, mem_snoop : 5, mem_lock : 2, mem_dtlb : 7, mem_lvl_num : 4, mem_remote : 1, mem_snoopx : 2, mem_rsvd : 24;
+    __u64 mem_op : 5, mem_lvl : 14, mem_snoop : 5, mem_lock : 2, mem_dtlb : 7, mem_lvl_num : 4, mem_remote : 1, mem_snoopx : 2, mem_blk : 3, mem_rsvd : 21;
   };
 };
 #elif defined(__BIG_ENDIAN_BITFIELD)
 union perf_mem_data_src {
   __u64 val;
   struct {
-    __u64 mem_rsvd : 24, mem_snoopx : 2, mem_remote : 1, mem_lvl_num : 4, mem_dtlb : 7, mem_lock : 2, mem_snoop : 5, mem_lvl : 14, mem_op : 5;
+    __u64 mem_rsvd : 21, mem_blk : 3, mem_snoopx : 2, mem_remote : 1, mem_lvl_num : 4, mem_dtlb : 7, mem_lock : 2, mem_snoop : 5, mem_lvl : 14, mem_op : 5;
   };
 };
 #else
@@ -445,10 +448,32 @@
 #define PERF_MEM_TLB_WK 0x20
 #define PERF_MEM_TLB_OS 0x40
 #define PERF_MEM_TLB_SHIFT 26
+#define PERF_MEM_BLK_NA 0x01
+#define PERF_MEM_BLK_DATA 0x02
+#define PERF_MEM_BLK_ADDR 0x04
+#define PERF_MEM_BLK_SHIFT 40
 #define PERF_MEM_S(a,s) (((__u64) PERF_MEM_ ##a ##_ ##s) << PERF_MEM_ ##a ##_SHIFT)
 struct perf_branch_entry {
   __u64 from;
   __u64 to;
   __u64 mispred : 1, predicted : 1, in_tx : 1, abort : 1, cycles : 16, type : 4, reserved : 40;
 };
+union perf_sample_weight {
+  __u64 full;
+#ifdef __LITTLE_ENDIAN_BITFIELD
+  struct {
+    __u32 var1_dw;
+    __u16 var2_w;
+    __u16 var3_w;
+  };
+#elif defined(__BIG_ENDIAN_BITFIELD)
+  struct {
+    __u16 var3_w;
+    __u16 var2_w;
+    __u32 var1_dw;
+  };
+#else
+#error "Unknown endianness"
+#endif
+};
 #endif
diff --git a/libc/kernel/uapi/linux/pkt_cls.h b/libc/kernel/uapi/linux/pkt_cls.h
index 62c2274..45dca35 100644
--- a/libc/kernel/uapi/linux/pkt_cls.h
+++ b/libc/kernel/uapi/linux/pkt_cls.h
@@ -462,6 +462,9 @@
   TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED = 1 << 1,
   TCA_FLOWER_KEY_CT_FLAGS_RELATED = 1 << 2,
   TCA_FLOWER_KEY_CT_FLAGS_TRACKED = 1 << 3,
+  TCA_FLOWER_KEY_CT_FLAGS_INVALID = 1 << 4,
+  TCA_FLOWER_KEY_CT_FLAGS_REPLY = 1 << 5,
+  __TCA_FLOWER_KEY_CT_FLAGS_MAX,
 };
 enum {
   TCA_FLOWER_KEY_ENC_OPTS_UNSPEC,
diff --git a/libc/kernel/uapi/linux/pkt_sched.h b/libc/kernel/uapi/linux/pkt_sched.h
index 7c16d3c..d0541fc 100644
--- a/libc/kernel/uapi/linux/pkt_sched.h
+++ b/libc/kernel/uapi/linux/pkt_sched.h
@@ -306,6 +306,7 @@
   TCA_HTB_RATE64,
   TCA_HTB_CEIL64,
   TCA_HTB_PAD,
+  TCA_HTB_OFFLOAD,
   __TCA_HTB_MAX,
 };
 #define TCA_HTB_MAX (__TCA_HTB_MAX - 1)
diff --git a/libc/kernel/uapi/linux/psample.h b/libc/kernel/uapi/linux/psample.h
index 1f8b325..dc67445 100644
--- a/libc/kernel/uapi/linux/psample.h
+++ b/libc/kernel/uapi/linux/psample.h
@@ -26,8 +26,8 @@
   PSAMPLE_ATTR_GROUP_SEQ,
   PSAMPLE_ATTR_SAMPLE_RATE,
   PSAMPLE_ATTR_DATA,
-  PSAMPLE_ATTR_TUNNEL,
   PSAMPLE_ATTR_GROUP_REFCOUNT,
+  PSAMPLE_ATTR_TUNNEL,
   __PSAMPLE_ATTR_MAX
 };
 enum psample_command {
diff --git a/libc/kernel/uapi/linux/rfkill.h b/libc/kernel/uapi/linux/rfkill.h
index 4e72938..6020baf 100644
--- a/libc/kernel/uapi/linux/rfkill.h
+++ b/libc/kernel/uapi/linux/rfkill.h
@@ -50,9 +50,16 @@
   __u8 op;
   __u8 soft;
   __u8 hard;
+} __attribute__((packed));
+struct rfkill_event_ext {
+  __u32 idx;
+  __u8 type;
+  __u8 op;
+  __u8 soft;
+  __u8 hard;
   __u8 hard_block_reasons;
 } __attribute__((packed));
-#define RFKILL_EVENT_SIZE_V1 8
+#define RFKILL_EVENT_SIZE_V1 sizeof(struct rfkill_event)
 #define RFKILL_IOC_MAGIC 'R'
 #define RFKILL_IOC_NOINPUT 1
 #define RFKILL_IOCTL_NOINPUT _IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT)
diff --git a/libc/kernel/uapi/linux/rtc.h b/libc/kernel/uapi/linux/rtc.h
index 8e70eba..7f38483 100644
--- a/libc/kernel/uapi/linux/rtc.h
+++ b/libc/kernel/uapi/linux/rtc.h
@@ -76,5 +76,9 @@
 #define RTC_PF 0x40
 #define RTC_AF 0x20
 #define RTC_UF 0x10
+#define RTC_FEATURE_ALARM 0
+#define RTC_FEATURE_ALARM_RES_MINUTE 1
+#define RTC_FEATURE_NEED_WEEK_DAY 2
+#define RTC_FEATURE_CNT 3
 #define RTC_MAX_FREQ 8192
 #endif
diff --git a/libc/kernel/uapi/linux/rtnetlink.h b/libc/kernel/uapi/linux/rtnetlink.h
index 335a5e9..22f8f1c 100644
--- a/libc/kernel/uapi/linux/rtnetlink.h
+++ b/libc/kernel/uapi/linux/rtnetlink.h
@@ -239,6 +239,7 @@
 #define RTM_F_FIB_MATCH 0x2000
 #define RTM_F_OFFLOAD 0x4000
 #define RTM_F_TRAP 0x8000
+#define RTM_F_OFFLOAD_FAILED 0x20000000
 enum rt_class_t {
   RT_TABLE_UNSPEC = 0,
   RT_TABLE_COMPAT = 252,
diff --git a/libc/kernel/uapi/linux/serial_core.h b/libc/kernel/uapi/linux/serial_core.h
index fd75fff..0caf698 100644
--- a/libc/kernel/uapi/linux/serial_core.h
+++ b/libc/kernel/uapi/linux/serial_core.h
@@ -100,7 +100,6 @@
 #define PORT_VT8500 97
 #define PORT_XUARTPS 98
 #define PORT_AR933X 99
-#define PORT_EFMUART 100
 #define PORT_ARC 101
 #define PORT_RP2 102
 #define PORT_LPUART 103
diff --git a/libc/kernel/uapi/linux/spi/spi.h b/libc/kernel/uapi/linux/spi/spi.h
new file mode 100644
index 0000000..39267a2
--- /dev/null
+++ b/libc/kernel/uapi/linux/spi/spi.h
@@ -0,0 +1,44 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_SPI_H
+#define _UAPI_SPI_H
+#include <linux/const.h>
+#define SPI_CPHA _BITUL(0)
+#define SPI_CPOL _BITUL(1)
+#define SPI_MODE_0 (0 | 0)
+#define SPI_MODE_1 (0 | SPI_CPHA)
+#define SPI_MODE_2 (SPI_CPOL | 0)
+#define SPI_MODE_3 (SPI_CPOL | SPI_CPHA)
+#define SPI_MODE_X_MASK (SPI_CPOL | SPI_CPHA)
+#define SPI_CS_HIGH _BITUL(2)
+#define SPI_LSB_FIRST _BITUL(3)
+#define SPI_3WIRE _BITUL(4)
+#define SPI_LOOP _BITUL(5)
+#define SPI_NO_CS _BITUL(6)
+#define SPI_READY _BITUL(7)
+#define SPI_TX_DUAL _BITUL(8)
+#define SPI_TX_QUAD _BITUL(9)
+#define SPI_RX_DUAL _BITUL(10)
+#define SPI_RX_QUAD _BITUL(11)
+#define SPI_CS_WORD _BITUL(12)
+#define SPI_TX_OCTAL _BITUL(13)
+#define SPI_RX_OCTAL _BITUL(14)
+#define SPI_3WIRE_HIZ _BITUL(15)
+#define SPI_MODE_USER_MASK (_BITUL(16) - 1)
+#endif
diff --git a/libc/kernel/uapi/linux/spi/spidev.h b/libc/kernel/uapi/linux/spi/spidev.h
index dede0f0..19d1d84 100644
--- a/libc/kernel/uapi/linux/spi/spidev.h
+++ b/libc/kernel/uapi/linux/spi/spidev.h
@@ -20,26 +20,7 @@
 #define SPIDEV_H
 #include <linux/types.h>
 #include <linux/ioctl.h>
-#define SPI_CPHA 0x01
-#define SPI_CPOL 0x02
-#define SPI_MODE_0 (0 | 0)
-#define SPI_MODE_1 (0 | SPI_CPHA)
-#define SPI_MODE_2 (SPI_CPOL | 0)
-#define SPI_MODE_3 (SPI_CPOL | SPI_CPHA)
-#define SPI_CS_HIGH 0x04
-#define SPI_LSB_FIRST 0x08
-#define SPI_3WIRE 0x10
-#define SPI_LOOP 0x20
-#define SPI_NO_CS 0x40
-#define SPI_READY 0x80
-#define SPI_TX_DUAL 0x100
-#define SPI_TX_QUAD 0x200
-#define SPI_RX_DUAL 0x400
-#define SPI_RX_QUAD 0x800
-#define SPI_CS_WORD 0x1000
-#define SPI_TX_OCTAL 0x2000
-#define SPI_RX_OCTAL 0x4000
-#define SPI_3WIRE_HIZ 0x8000
+#include <linux/spi/spi.h>
 #define SPI_IOC_MAGIC 'k'
 struct spi_ioc_transfer {
   __u64 tx_buf;
diff --git a/libc/kernel/uapi/linux/surface_aggregator/cdev.h b/libc/kernel/uapi/linux/surface_aggregator/cdev.h
new file mode 100644
index 0000000..25bfd8d
--- /dev/null
+++ b/libc/kernel/uapi/linux/surface_aggregator/cdev.h
@@ -0,0 +1,46 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_SURFACE_AGGREGATOR_CDEV_H
+#define _UAPI_LINUX_SURFACE_AGGREGATOR_CDEV_H
+#include <linux/ioctl.h>
+#include <linux/types.h>
+enum ssam_cdev_request_flags {
+  SSAM_CDEV_REQUEST_HAS_RESPONSE = 0x01,
+  SSAM_CDEV_REQUEST_UNSEQUENCED = 0x02,
+};
+struct ssam_cdev_request {
+  __u8 target_category;
+  __u8 target_id;
+  __u8 command_id;
+  __u8 instance_id;
+  __u16 flags;
+  __s16 status;
+  struct {
+    __u64 data;
+    __u16 length;
+    __u8 __pad[6];
+  } payload;
+  struct {
+    __u64 data;
+    __u16 length;
+    __u8 __pad[6];
+  } response;
+} __attribute__((__packed__));
+#define SSAM_CDEV_REQUEST _IOWR(0xA5, 1, struct ssam_cdev_request)
+#endif
diff --git a/libc/kernel/uapi/linux/sysctl.h b/libc/kernel/uapi/linux/sysctl.h
index 3f53f2d..ebaf8a9 100644
--- a/libc/kernel/uapi/linux/sysctl.h
+++ b/libc/kernel/uapi/linux/sysctl.h
@@ -489,6 +489,7 @@
   NET_IPV6_ACCEPT_SOURCE_ROUTE = 25,
   NET_IPV6_ACCEPT_RA_FROM_LOCAL = 26,
   NET_IPV6_ACCEPT_RA_RT_INFO_MIN_PLEN = 27,
+  NET_IPV6_RA_DEFRTR_METRIC = 28,
   __NET_IPV6_MAX
 };
 enum {
diff --git a/libc/kernel/uapi/linux/tcp.h b/libc/kernel/uapi/linux/tcp.h
index 2ca37a6..99c5bff 100644
--- a/libc/kernel/uapi/linux/tcp.h
+++ b/libc/kernel/uapi/linux/tcp.h
@@ -220,6 +220,7 @@
   TCP_NLA_TIMEOUT_REHASH,
   TCP_NLA_BYTES_NOTSENT,
   TCP_NLA_EDT,
+  TCP_NLA_TTL,
 };
 #define TCP_MD5SIG_MAXKEYLEN 80
 #define TCP_MD5SIG_FLAG_PREFIX 0x1
@@ -249,5 +250,9 @@
   __u64 copybuf_address;
   __s32 copybuf_len;
   __u32 flags;
+  __u64 msg_control;
+  __u64 msg_controllen;
+  __u32 msg_flags;
+  __u32 reserved;
 };
 #endif
diff --git a/libc/kernel/uapi/linux/termios.h b/libc/kernel/uapi/linux/termios.h
index a665735..cde4099 100644
--- a/libc/kernel/uapi/linux/termios.h
+++ b/libc/kernel/uapi/linux/termios.h
@@ -20,15 +20,4 @@
 #define _LINUX_TERMIOS_H
 #include <linux/types.h>
 #include <asm/termios.h>
-#define NFF 5
-struct termiox {
-  __u16 x_hflag;
-  __u16 x_cflag;
-  __u16 x_rflag[NFF];
-  __u16 x_sflag;
-};
-#define RTSXOFF 0x0001
-#define CTSXON 0x0002
-#define DTRXOFF 0x0004
-#define DSRXON 0x0008
 #endif
diff --git a/libc/kernel/uapi/linux/usb/ch9.h b/libc/kernel/uapi/linux/usb/ch9.h
index 43d2f4b..f1dade9 100644
--- a/libc/kernel/uapi/linux/usb/ch9.h
+++ b/libc/kernel/uapi/linux/usb/ch9.h
@@ -434,9 +434,19 @@
   __le32 bmSublinkSpeedAttr[1];
 #define USB_SSP_SUBLINK_SPEED_SSID (0xf)
 #define USB_SSP_SUBLINK_SPEED_LSE (0x3 << 4)
+#define USB_SSP_SUBLINK_SPEED_LSE_BPS 0
+#define USB_SSP_SUBLINK_SPEED_LSE_KBPS 1
+#define USB_SSP_SUBLINK_SPEED_LSE_MBPS 2
+#define USB_SSP_SUBLINK_SPEED_LSE_GBPS 3
 #define USB_SSP_SUBLINK_SPEED_ST (0x3 << 6)
+#define USB_SSP_SUBLINK_SPEED_ST_SYM_RX 0
+#define USB_SSP_SUBLINK_SPEED_ST_ASYM_RX 1
+#define USB_SSP_SUBLINK_SPEED_ST_SYM_TX 2
+#define USB_SSP_SUBLINK_SPEED_ST_ASYM_TX 3
 #define USB_SSP_SUBLINK_SPEED_RSVD (0x3f << 8)
 #define USB_SSP_SUBLINK_SPEED_LP (0x3 << 14)
+#define USB_SSP_SUBLINK_SPEED_LP_SS 0
+#define USB_SSP_SUBLINK_SPEED_LP_SSP 1
 #define USB_SSP_SUBLINK_SPEED_LSM (0xff << 16)
 } __attribute__((packed));
 #define USB_PD_POWER_DELIVERY_CAPABILITY 0x06
diff --git a/libc/kernel/uapi/linux/usb/tmc.h b/libc/kernel/uapi/linux/usb/tmc.h
index 20c061b..6d0add1 100644
--- a/libc/kernel/uapi/linux/usb/tmc.h
+++ b/libc/kernel/uapi/linux/usb/tmc.h
@@ -86,6 +86,8 @@
 #define USBTMC488_IOCTL_WAIT_SRQ _IOW(USBTMC_IOC_NR, 23, __u32)
 #define USBTMC_IOCTL_MSG_IN_ATTR _IOR(USBTMC_IOC_NR, 24, __u8)
 #define USBTMC_IOCTL_AUTO_ABORT _IOW(USBTMC_IOC_NR, 25, __u8)
+#define USBTMC_IOCTL_GET_STB _IOR(USBTMC_IOC_NR, 26, __u8)
+#define USBTMC_IOCTL_GET_SRQ_STB _IOR(USBTMC_IOC_NR, 27, __u8)
 #define USBTMC_IOCTL_CANCEL_IO _IO(USBTMC_IOC_NR, 35)
 #define USBTMC_IOCTL_CLEANUP_IO _IO(USBTMC_IOC_NR, 36)
 #define USBTMC488_CAPABILITY_TRIGGER 1
diff --git a/libc/kernel/uapi/linux/v4l2-controls.h b/libc/kernel/uapi/linux/v4l2-controls.h
index 4cb46e2..75e5ccd 100644
--- a/libc/kernel/uapi/linux/v4l2-controls.h
+++ b/libc/kernel/uapi/linux/v4l2-controls.h
@@ -113,6 +113,7 @@
 #define V4L2_CID_USER_IMX_BASE (V4L2_CID_USER_BASE + 0x10b0)
 #define V4L2_CID_USER_ATMEL_ISC_BASE (V4L2_CID_USER_BASE + 0x10c0)
 #define V4L2_CID_USER_CODA_BASE (V4L2_CID_USER_BASE + 0x10e0)
+#define V4L2_CID_USER_CCS_BASE (V4L2_CID_USER_BASE + 0x10f0)
 #define V4L2_CID_CODEC_BASE (V4L2_CTRL_CLASS_CODEC | 0x900)
 #define V4L2_CID_CODEC_CLASS (V4L2_CTRL_CLASS_CODEC | 1)
 #define V4L2_CID_MPEG_STREAM_TYPE (V4L2_CID_CODEC_BASE + 0)
@@ -316,6 +317,7 @@
 #define V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE (V4L2_CID_CODEC_BASE + 227)
 #define V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE (V4L2_CID_CODEC_BASE + 228)
 #define V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME (V4L2_CID_CODEC_BASE + 229)
+#define V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID (V4L2_CID_CODEC_BASE + 230)
 #define V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL (V4L2_CID_CODEC_BASE + 270)
 enum v4l2_mpeg_video_mpeg2_level {
   V4L2_MPEG_VIDEO_MPEG2_LEVEL_LOW = 0,
@@ -474,6 +476,15 @@
 #define V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP (V4L2_CID_CODEC_BASE + 386)
 #define V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP (V4L2_CID_CODEC_BASE + 387)
 #define V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP (V4L2_CID_CODEC_BASE + 388)
+#define V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP (V4L2_CID_CODEC_BASE + 389)
+#define V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP (V4L2_CID_CODEC_BASE + 390)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR (V4L2_CID_CODEC_BASE + 391)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR (V4L2_CID_CODEC_BASE + 392)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR (V4L2_CID_CODEC_BASE + 393)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR (V4L2_CID_CODEC_BASE + 394)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR (V4L2_CID_CODEC_BASE + 395)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR (V4L2_CID_CODEC_BASE + 396)
+#define V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR (V4L2_CID_CODEC_BASE + 397)
 #define V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP (V4L2_CID_CODEC_BASE + 400)
 #define V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP (V4L2_CID_CODEC_BASE + 401)
 #define V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP (V4L2_CID_CODEC_BASE + 402)
@@ -653,6 +664,12 @@
   V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_LEVEL_LIMIT = 1,
   V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT = 2,
 };
+#define V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP (V4L2_CID_CODEC_BASE + 647)
+#define V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP (V4L2_CID_CODEC_BASE + 648)
+#define V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP (V4L2_CID_CODEC_BASE + 649)
+#define V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP (V4L2_CID_CODEC_BASE + 650)
+#define V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP (V4L2_CID_CODEC_BASE + 651)
+#define V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP (V4L2_CID_CODEC_BASE + 652)
 #define V4L2_CID_CODEC_CX2341X_BASE (V4L2_CTRL_CLASS_CODEC | 0x1000)
 #define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_CODEC_CX2341X_BASE + 0)
 enum v4l2_mpeg_cx2341x_video_spatial_filter_mode {
diff --git a/libc/kernel/uapi/linux/vdpa.h b/libc/kernel/uapi/linux/vdpa.h
new file mode 100644
index 0000000..bee6618
--- /dev/null
+++ b/libc/kernel/uapi/linux/vdpa.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_VDPA_H_
+#define _UAPI_LINUX_VDPA_H_
+#define VDPA_GENL_NAME "vdpa"
+#define VDPA_GENL_VERSION 0x1
+enum vdpa_command {
+  VDPA_CMD_UNSPEC,
+  VDPA_CMD_MGMTDEV_NEW,
+  VDPA_CMD_MGMTDEV_GET,
+  VDPA_CMD_DEV_NEW,
+  VDPA_CMD_DEV_DEL,
+  VDPA_CMD_DEV_GET,
+};
+enum vdpa_attr {
+  VDPA_ATTR_UNSPEC,
+  VDPA_ATTR_MGMTDEV_BUS_NAME,
+  VDPA_ATTR_MGMTDEV_DEV_NAME,
+  VDPA_ATTR_MGMTDEV_SUPPORTED_CLASSES,
+  VDPA_ATTR_DEV_NAME,
+  VDPA_ATTR_DEV_ID,
+  VDPA_ATTR_DEV_VENDOR_ID,
+  VDPA_ATTR_DEV_MAX_VQS,
+  VDPA_ATTR_DEV_MAX_VQ_SIZE,
+  VDPA_ATTR_MAX,
+};
+#endif
diff --git a/libc/kernel/uapi/linux/version.h b/libc/kernel/uapi/linux/version.h
index e5c1243..86c0070 100644
--- a/libc/kernel/uapi/linux/version.h
+++ b/libc/kernel/uapi/linux/version.h
@@ -16,5 +16,8 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#define LINUX_VERSION_CODE 330496
-#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+#define LINUX_VERSION_CODE 330752
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + ((c) > 255 ? 255 : (c)))
+#define LINUX_VERSION_MAJOR 5
+#define LINUX_VERSION_PATCHLEVEL 12
+#define LINUX_VERSION_SUBLEVEL 0
diff --git a/libc/kernel/uapi/linux/vfio.h b/libc/kernel/uapi/linux/vfio.h
index f0f5c8f..e0f322b 100644
--- a/libc/kernel/uapi/linux/vfio.h
+++ b/libc/kernel/uapi/linux/vfio.h
@@ -29,6 +29,8 @@
 #define VFIO_TYPE1_NESTING_IOMMU 6
 #define VFIO_SPAPR_TCE_v2_IOMMU 7
 #define VFIO_NOIOMMU_IOMMU 8
+#define VFIO_UNMAP_ALL 9
+#define VFIO_UPDATE_VADDR 10
 #define VFIO_TYPE (';')
 #define VFIO_BASE 100
 struct vfio_info_cap_header {
@@ -320,6 +322,7 @@
   __u32 flags;
 #define VFIO_DMA_MAP_FLAG_READ (1 << 0)
 #define VFIO_DMA_MAP_FLAG_WRITE (1 << 1)
+#define VFIO_DMA_MAP_FLAG_VADDR (1 << 2)
   __u64 vaddr;
   __u64 iova;
   __u64 size;
@@ -334,6 +337,8 @@
   __u32 argsz;
   __u32 flags;
 #define VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP (1 << 0)
+#define VFIO_DMA_UNMAP_FLAG_ALL (1 << 1)
+#define VFIO_DMA_UNMAP_FLAG_VADDR (1 << 2)
   __u64 iova;
   __u64 size;
   __u8 data[];
diff --git a/libc/kernel/uapi/misc/habanalabs.h b/libc/kernel/uapi/misc/habanalabs.h
index d8f724b..b009023 100644
--- a/libc/kernel/uapi/misc/habanalabs.h
+++ b/libc/kernel/uapi/misc/habanalabs.h
@@ -240,7 +240,9 @@
   __u32 num_of_events;
   __u32 device_id;
   __u32 module_id;
-  __u32 reserved[2];
+  __u32 reserved;
+  __u16 first_available_interrupt_id;
+  __u16 reserved2;
   __u32 cpld_version;
   __u32 psoc_pci_pll_nr;
   __u32 psoc_pci_pll_nf;
@@ -251,15 +253,18 @@
   __u8 pad[2];
   __u8 cpucp_version[HL_INFO_VERSION_MAX_LEN];
   __u8 card_name[HL_INFO_CARD_NAME_MAX_LEN];
+  __u64 reserved3;
+  __u64 dram_page_size;
 };
 struct hl_info_dram_usage {
   __u64 dram_free_mem;
   __u64 ctx_dram_mem;
 };
+#define HL_BUSY_ENGINES_MASK_EXT_SIZE 2
 struct hl_info_hw_idle {
   __u32 is_idle;
   __u32 busy_engines_mask;
-  __u64 busy_engines_mask_ext;
+  __u64 busy_engines_mask_ext[HL_BUSY_ENGINES_MASK_EXT_SIZE];
 };
 struct hl_info_device_status {
   __u32 status;
@@ -301,6 +306,8 @@
 struct hl_info_sync_manager {
   __u32 first_available_sync_object;
   __u32 first_available_monitor;
+  __u32 first_available_cq;
+  __u32 reserved;
 };
 struct hl_info_cs_counters {
   __u64 total_out_of_mem_drop_cnt;
@@ -379,12 +386,18 @@
 #define HL_CS_FLAGS_WAIT 0x4
 #define HL_CS_FLAGS_COLLECTIVE_WAIT 0x8
 #define HL_CS_FLAGS_TIMESTAMP 0x20
+#define HL_CS_FLAGS_STAGED_SUBMISSION 0x40
+#define HL_CS_FLAGS_STAGED_SUBMISSION_FIRST 0x80
+#define HL_CS_FLAGS_STAGED_SUBMISSION_LAST 0x100
 #define HL_CS_STATUS_SUCCESS 0
 #define HL_MAX_JOBS_PER_CS 512
 struct hl_cs_in {
   __u64 chunks_restore;
   __u64 chunks_execute;
-  __u64 chunks_store;
+  union {
+    __u64 chunks_store;
+    __u64 seq;
+  };
   __u32 num_chunks_restore;
   __u32 num_chunks_execute;
   __u32 num_chunks_store;
@@ -426,6 +439,7 @@
 #define HL_MEM_OP_FREE 1
 #define HL_MEM_OP_MAP 2
 #define HL_MEM_OP_UNMAP 3
+#define HL_MEM_OP_MAP_BLOCK 4
 #define HL_MEM_CONTIGUOUS 0x1
 #define HL_MEM_SHARED 0x2
 #define HL_MEM_USERPTR 0x4
@@ -447,6 +461,9 @@
       __u64 mem_size;
     } map_host;
     struct {
+      __u64 block_addr;
+    } map_block;
+    struct {
       __u64 device_virt_addr;
     } unmap;
   };
@@ -459,6 +476,11 @@
   union {
     __u64 device_virt_addr;
     __u64 handle;
+    struct {
+      __u64 block_handle;
+      __u32 block_size;
+      __u32 pad;
+    };
   };
 };
 union hl_mem_args {
diff --git a/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h b/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h
index 15af02e..f96b4e8 100644
--- a/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h
+++ b/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h
@@ -206,6 +206,7 @@
   UVERBS_METHOD_MR_DESTROY,
   UVERBS_METHOD_ADVISE_MR,
   UVERBS_METHOD_QUERY_MR,
+  UVERBS_METHOD_REG_DMABUF_MR,
 };
 enum uverbs_attrs_mr_destroy_ids {
   UVERBS_ATTR_DESTROY_MR_HANDLE,
@@ -223,6 +224,17 @@
   UVERBS_ATTR_QUERY_MR_RESP_LENGTH,
   UVERBS_ATTR_QUERY_MR_RESP_IOVA,
 };
+enum uverbs_attrs_reg_dmabuf_mr_cmd_attr_ids {
+  UVERBS_ATTR_REG_DMABUF_MR_HANDLE,
+  UVERBS_ATTR_REG_DMABUF_MR_PD_HANDLE,
+  UVERBS_ATTR_REG_DMABUF_MR_OFFSET,
+  UVERBS_ATTR_REG_DMABUF_MR_LENGTH,
+  UVERBS_ATTR_REG_DMABUF_MR_IOVA,
+  UVERBS_ATTR_REG_DMABUF_MR_FD,
+  UVERBS_ATTR_REG_DMABUF_MR_ACCESS_FLAGS,
+  UVERBS_ATTR_REG_DMABUF_MR_RESP_LKEY,
+  UVERBS_ATTR_REG_DMABUF_MR_RESP_RKEY,
+};
 enum uverbs_attrs_create_counters_cmd_attr_ids {
   UVERBS_ATTR_CREATE_COUNTERS_HANDLE,
 };
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 51a1076..c31e306 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1772,6 +1772,7 @@
     android_fdtrack_compare_exchange_hook; # llndk
     android_fdtrack_get_enabled; # llndk
     android_fdtrack_set_enabled; # llndk
+    android_fdtrack_set_globally_enabled; # llndk
     android_net_res_stats_get_info_for_net;
     android_net_res_stats_aggregate;
     android_net_res_stats_get_usable_servers;
diff --git a/libc/malloc_debug/PointerData.cpp b/libc/malloc_debug/PointerData.cpp
index 4f81ff7..90c9136 100644
--- a/libc/malloc_debug/PointerData.cpp
+++ b/libc/malloc_debug/PointerData.cpp
@@ -588,8 +588,8 @@
       dprintf(fd, "  bt_info");
       for (const auto& frame : *info.backtrace_info) {
         dprintf(fd, " {");
-        if (frame.map_info != nullptr && !frame.map_info->name.empty()) {
-          dprintf(fd, "\"%s\"", frame.map_info->name.c_str());
+        if (frame.map_info != nullptr && !frame.map_info->name().empty()) {
+          dprintf(fd, "\"%s\"", frame.map_info->name().c_str());
         } else {
           dprintf(fd, "\"\"");
         }
diff --git a/libc/malloc_debug/UnwindBacktrace.cpp b/libc/malloc_debug/UnwindBacktrace.cpp
index 92fb3fa..128991b 100644
--- a/libc/malloc_debug/UnwindBacktrace.cpp
+++ b/libc/malloc_debug/UnwindBacktrace.cpp
@@ -90,14 +90,14 @@
     unwindstack::MapInfo* map_info = info->map_info;
 
     std::string line = android::base::StringPrintf("          #%0zd  pc %" PAD_PTR "  ", i, info->rel_pc);
-    if (map_info->offset != 0) {
-      line += android::base::StringPrintf("(offset 0x%" PRIx64 ") ", map_info->offset);
+    if (map_info->offset() != 0) {
+      line += android::base::StringPrintf("(offset 0x%" PRIx64 ") ", map_info->offset());
     }
 
-    if (map_info->name.empty()) {
-      line += android::base::StringPrintf("<anonymous:%" PRIx64 ">", map_info->start);
+    if (map_info->name().empty()) {
+      line += android::base::StringPrintf("<anonymous:%" PRIx64 ">", map_info->start());
     } else {
-      line += map_info->name;
+      line += map_info->name();
     }
 
     if (!info->function_name.empty()) {
diff --git a/libc/platform/bionic/fdtrack.h b/libc/platform/bionic/fdtrack.h
index 6eb379b..fe6ca84 100644
--- a/libc/platform/bionic/fdtrack.h
+++ b/libc/platform/bionic/fdtrack.h
@@ -70,4 +70,8 @@
 bool android_fdtrack_get_enabled() __INTRODUCED_IN(30);
 bool android_fdtrack_set_enabled(bool new_value) __INTRODUCED_IN(30);
 
+// Globally enable/disable fdtrack.
+// This is primaryily useful to reenable fdtrack after it's been automatically disabled post-fork.
+void android_fdtrack_set_globally_enabled(bool new_value) __INTRODUCED_IN(31);
+
 __END_DECLS
diff --git a/libc/private/bionic_fdtrack.h b/libc/private/bionic_fdtrack.h
index 259897c..c05b32b 100644
--- a/libc/private/bionic_fdtrack.h
+++ b/libc/private/bionic_fdtrack.h
@@ -28,41 +28,43 @@
 
 #pragma once
 
-#include <sys/cdefs.h>
 #include <stdatomic.h>
+#include <sys/cdefs.h>
 
 #include "platform/bionic/fdtrack.h"
 
 #include "bionic/pthread_internal.h"
-#include "private/bionic_tls.h"
 #include "private/ErrnoRestorer.h"
+#include "private/bionic_tls.h"
 
 extern "C" _Atomic(android_fdtrack_hook_t) __android_fdtrack_hook;
+extern "C" bool __android_fdtrack_globally_disabled;
 
 // Macro to record file descriptor creation.
 // e.g.:
 //   int socket(int domain, int type, int protocol) {
 //     return FDTRACK_CREATE_NAME("socket", __socket(domain, type, protocol));
 //   }
-#define FDTRACK_CREATE_NAME(name, fd_value)                       \
-  ({                                                              \
-    int __fd = (fd_value);                                        \
-    if (__fd != -1 && __predict_false(__android_fdtrack_hook) &&  \
-        !__predict_false(__get_thread()->is_vforked())) {         \
-      bionic_tls& tls = __get_bionic_tls();                       \
-      /* fdtrack_disabled is only true during reentrant calls. */ \
-      if (!__predict_false(tls.fdtrack_disabled)) {               \
-        ErrnoRestorer r;                                          \
-        tls.fdtrack_disabled = true;                              \
-        android_fdtrack_event event;                              \
-        event.fd = __fd;                                          \
-        event.type = ANDROID_FDTRACK_EVENT_TYPE_CREATE;           \
-        event.data.create.function_name = name;                   \
-        atomic_load(&__android_fdtrack_hook)(&event);             \
-        tls.fdtrack_disabled = false;                             \
-      }                                                           \
-    }                                                             \
-    __fd;                                                         \
+#define FDTRACK_CREATE_NAME(name, fd_value)                        \
+  ({                                                               \
+    int __fd = (fd_value);                                         \
+    if (__fd != -1 && __predict_false(__android_fdtrack_hook) &&   \
+        !__predict_false(__get_thread()->is_vforked())) {          \
+      bionic_tls& tls = __get_bionic_tls();                        \
+      /* fdtrack_disabled is only true during reentrant calls. */  \
+      if (!__predict_false(tls.fdtrack_disabled) &&                \
+          !__predict_false(__android_fdtrack_globally_disabled)) { \
+        ErrnoRestorer r;                                           \
+        tls.fdtrack_disabled = true;                               \
+        android_fdtrack_event event;                               \
+        event.fd = __fd;                                           \
+        event.type = ANDROID_FDTRACK_EVENT_TYPE_CREATE;            \
+        event.data.create.function_name = name;                    \
+        atomic_load (&__android_fdtrack_hook)(&event);             \
+        tls.fdtrack_disabled = false;                              \
+      }                                                            \
+    }                                                              \
+    __fd;                                                          \
   })
 
 // Macro to record file descriptor creation, with the current function's name.
@@ -74,22 +76,23 @@
 
 // Macro to record file descriptor closure.
 // Note that this does not actually close the file descriptor.
-#define FDTRACK_CLOSE(fd_value)                                  \
-  ({                                                             \
-    int __fd = (fd_value);                                       \
-    if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \
-        !__predict_false(__get_thread()->is_vforked())) {        \
-      bionic_tls& tls = __get_bionic_tls();                      \
-      if (!__predict_false(tls.fdtrack_disabled)) {              \
-        int saved_errno = errno;                                 \
-        tls.fdtrack_disabled = true;                             \
-        android_fdtrack_event event;                             \
-        event.fd = __fd;                                         \
-        event.type = ANDROID_FDTRACK_EVENT_TYPE_CLOSE;           \
-        atomic_load(&__android_fdtrack_hook)(&event);            \
-        tls.fdtrack_disabled = false;                            \
-        errno = saved_errno;                                     \
-      }                                                          \
-    }                                                            \
-    __fd;                                                        \
+#define FDTRACK_CLOSE(fd_value)                                    \
+  ({                                                               \
+    int __fd = (fd_value);                                         \
+    if (__fd != -1 && __predict_false(__android_fdtrack_hook) &&   \
+        !__predict_false(__get_thread()->is_vforked())) {          \
+      bionic_tls& tls = __get_bionic_tls();                        \
+      if (!__predict_false(tls.fdtrack_disabled) &&                \
+          !__predict_false(__android_fdtrack_globally_disabled)) { \
+        int saved_errno = errno;                                   \
+        tls.fdtrack_disabled = true;                               \
+        android_fdtrack_event event;                               \
+        event.fd = __fd;                                           \
+        event.type = ANDROID_FDTRACK_EVENT_TYPE_CLOSE;             \
+        atomic_load (&__android_fdtrack_hook)(&event);             \
+        tls.fdtrack_disabled = false;                              \
+        errno = saved_errno;                                       \
+      }                                                            \
+    }                                                              \
+    __fd;                                                          \
   })
diff --git a/libc/system_properties/system_properties.cpp b/libc/system_properties/system_properties.cpp
index 3fd20b7..344c838 100644
--- a/libc/system_properties/system_properties.cpp
+++ b/libc/system_properties/system_properties.cpp
@@ -133,7 +133,7 @@
 
   prop_area* pa = contexts_->GetPropAreaForName(name);
   if (!pa) {
-    async_safe_format_log(ANDROID_LOG_ERROR, "libc", "Access denied finding property \"%s\"", name);
+    async_safe_format_log(ANDROID_LOG_WARN, "libc", "Access denied finding property \"%s\"", name);
     return nullptr;
   }
 
diff --git a/libc/tools/check-symbols-glibc.py b/libc/tools/check-symbols-glibc.py
index d8d1982..613aa88 100755
--- a/libc/tools/check-symbols-glibc.py
+++ b/libc/tools/check-symbols-glibc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #
 # Copyright (C) 2015 The Android Open Source Project
 #
@@ -231,33 +231,33 @@
 glibc = glibc - in_posix_and_glibc_but_dead_or_useless
 
 if not only_unwanted:
-  #print 'glibc:'
+  #print('glibc:')
   #for symbol in sorted(glibc):
-  #  print symbol
-  #print
+  #  print(symbol)
+  #print()
 
-  #print 'bionic:'
+  #print('bionic:')
   #for symbol in sorted(bionic):
-  #  print symbol
-  #print
+  #  print(symbol)
+  #print()
 
-  print 'in glibc (but not posix) but not bionic:'
+  print('in glibc (but not posix) but not bionic:')
   for symbol in sorted((glibc - posix).difference(bionic)):
-    print symbol
-  print
+    print(symbol)
+  print()
 
-  print 'in posix (and implemented in glibc) but not bionic:'
+  print('in posix (and implemented in glibc) but not bionic:')
   for symbol in sorted((posix.intersection(glibc)).difference(bionic)):
-    print symbol
-  print
+    print(symbol)
+  print()
 
-  print 'in bionic but not glibc:'
+  print('in bionic but not glibc:')
 
 allowed_stuff = (bsd_stuff | FORTIFY_stuff | linux_stuff | macro_stuff |
                  std_stuff | weird_stuff | libresolv_stuff | known)
 for symbol in sorted((bionic - allowed_stuff).difference(glibc)):
   if symbol in ndk_ignored:
     symbol += '*'
-  print symbol
+  print(symbol)
 
 sys.exit(0)
diff --git a/libc/tools/check-symbols.py b/libc/tools/check-symbols.py
deleted file mode 100755
index 6568917..0000000
--- a/libc/tools/check-symbols.py
+++ /dev/null
@@ -1,87 +0,0 @@
-#!/usr/bin/env python
-
-import glob
-import os
-import re
-import string
-import subprocess
-import sys
-
-toolchain = os.environ['ANDROID_TOOLCHAIN']
-arch = re.sub(r'.*/linux-x86/([^/]+)/.*', r'\1', toolchain)
-
-sys.stderr.write('Checking symbols for arch "%s"...\n' % arch)
-
-def GetSymbols(library, functions_or_variables):
-  global api
-  global arch
-
-  api = '9'
-  if library == 'libm' and arch == 'arm':
-    api = '3'
-
-  # There were no 64-bit ABIs before API level 21.
-  if '64' in arch:
-    api = '21'
-
-  # What GCC calls aarch64, Android calls arm64.
-  if arch == 'aarch64':
-    arch = 'arm64'
-
-  path = '%s/development/ndk/platforms/android-%s/arch-%s/symbols/%s.so.%s.txt' % (os.environ['ANDROID_BUILD_TOP'], api, arch, library, functions_or_variables)
-  symbols = set()
-  for line in open(path, 'r'):
-    symbols.add(line.rstrip())
-  #sys.stdout.write('%d %s in %s for %s\n' % (len(symbols), functions_or_variables, library, arch))
-  return symbols
-
-def CheckSymbols(library, functions_or_variables):
-  expected_symbols = GetSymbols(library, functions_or_variables)
-
-  lib_dir = 'lib'
-  if '64' in arch:
-    lib_dir = 'lib64'
-
-  so_file = '%s/system/%s/%s.so' % (os.environ['ANDROID_PRODUCT_OUT'], lib_dir, library)
-
-  # Example readelf output:
-  #   264: 0001623c     4 FUNC    GLOBAL DEFAULT    8 cabsf
-  #   266: 00016244     4 FUNC    GLOBAL DEFAULT    8 dremf
-  #   267: 00019018     4 OBJECT  GLOBAL DEFAULT   11 __fe_dfl_env
-  #   268: 00000000     0 FUNC    GLOBAL DEFAULT  UND __aeabi_dcmplt
-
-
-  r = re.compile(r' +\d+: [0-9a-f]+ +\d+ (FUNC|OBJECT) +\S+ +\S+ +\d+ (\S+)')
-
-  actual_symbols = set()
-  for line in subprocess.check_output(['readelf', '-W', '--dyn-syms', so_file]).split('\n'):
-    m = r.match(line)
-    if m:
-      symbol = string.split(m.group(2), '@')[0]
-      if m.group(1) == 'FUNC' and functions_or_variables == 'functions':
-        actual_symbols.add(symbol)
-      elif m.group(1) == 'OBJECT' and functions_or_variables == 'variables':
-        actual_symbols.add(symbol)
-    #else:
-      #print 'ignoring: ' % line
-
-  missing = expected_symbols - actual_symbols
-  if len(missing) > 0:
-    sys.stderr.write('%d missing %s in %s for %s:\n' % (len(missing), functions_or_variables, library, arch))
-    for miss in sorted(missing):
-      sys.stderr.write('  %s\n' % miss)
-
-  extra = actual_symbols - expected_symbols
-  if len(extra) > 0:
-    sys.stderr.write('%d extra %s in %s for %s:\n' % (len(extra), functions_or_variables, library, arch))
-    for s in sorted(extra):
-      sys.stderr.write('  %s\n' % s)
-
-  return len(missing) == 0
-
-CheckSymbols("libc", "functions")
-CheckSymbols("libc", "variables")
-CheckSymbols("libm", "functions")
-CheckSymbols("libm", "variables")
-
-sys.exit(0)
diff --git a/libc/tools/generate_notice.py b/libc/tools/generate_notice.py
index e0e6b32..e004d74 100755
--- a/libc/tools/generate_notice.py
+++ b/libc/tools/generate_notice.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Run with directory arguments from any directory, with no special setup
 # required.
 
@@ -38,6 +38,9 @@
         return False
     if path.name in {"notice", "readme", "pylintrc"}:
         return False
+    # Backup files for some editors.
+    if path.match("*~"):
+        return False
     return True
 
 
diff --git a/libc/tools/genfunctosyscallnrs.py b/libc/tools/genfunctosyscallnrs.py
index 26642f9..fa48844 100755
--- a/libc/tools/genfunctosyscallnrs.py
+++ b/libc/tools/genfunctosyscallnrs.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import logging
diff --git a/libc/tools/genseccomp.py b/libc/tools/genseccomp.py
index a78f6c1..33bf470 100755
--- a/libc/tools/genseccomp.py
+++ b/libc/tools/genseccomp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import logging
diff --git a/libc/tools/genserv.py b/libc/tools/genserv.py
index 84a139d..acbfea2 100755
--- a/libc/tools/genserv.py
+++ b/libc/tools/genserv.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 
 import sys, os, string, re
diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py
index d8d4302..baaa52d 100755
--- a/libc/tools/gensyscalls.py
+++ b/libc/tools/gensyscalls.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # This tool is used to generate the assembler system call stubs,
 # the header files listing all available system calls, and the
@@ -434,13 +434,13 @@
     for syscall in parser.syscalls:
         syscall["__NR_name"] = make__NR_name(syscall["name"])
 
-        if syscall.has_key("arm"):
+        if "arm" in syscall:
             syscall["asm-arm"] = add_footer(32, arm_eabi_genstub(syscall), syscall)
 
-        if syscall.has_key("arm64"):
+        if "arm64" in syscall:
             syscall["asm-arm64"] = add_footer(64, arm64_genstub(syscall), syscall)
 
-        if syscall.has_key("x86"):
+        if "x86" in syscall:
             if syscall["socketcall_id"] >= 0:
                 syscall["asm-x86"] = add_footer(32, x86_genstub_socketcall(syscall), syscall)
             else:
@@ -449,13 +449,13 @@
             E("socketcall_id for dispatch syscalls is only supported for x86 in '%s'" % t)
             return
 
-        if syscall.has_key("x86_64"):
+        if "x86_64" in syscall:
             syscall["asm-x86_64"] = add_footer(64, x86_64_genstub(syscall), syscall)
 
     print("/* Generated by gensyscalls.py. Do not edit. */\n")
     print("#include <private/bionic_asm.h>\n")
     for syscall in parser.syscalls:
-        if syscall.has_key("asm-%s" % arch):
+        if ("asm-%s" % arch) in syscall:
             print(syscall["asm-%s" % arch])
 
     if arch == 'arm64':
diff --git a/libc/tools/ndk_missing_symbols.py b/libc/tools/ndk_missing_symbols.py
index a9f92b1..eff6972 100755
--- a/libc/tools/ndk_missing_symbols.py
+++ b/libc/tools/ndk_missing_symbols.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #
 # Copyright (C) 2015 The Android Open Source Project
 #
diff --git a/libc/tools/symbols.py b/libc/tools/symbols.py
index 3f40aad..1457534 100644
--- a/libc/tools/symbols.py
+++ b/libc/tools/symbols.py
@@ -41,7 +41,8 @@
 
     symbols = set()
 
-    output = subprocess.check_output(['readelf', sym_type, '-W', elf_file])
+    output = subprocess.check_output(['readelf', sym_type, '-W', elf_file],
+            text=True)
     for line in output.split('\n'):
         if ' HIDDEN ' in line or ' UND ' in line:
             continue
@@ -76,6 +77,10 @@
     if not os.path.isdir(lib_dir):
         lib_dir = os.path.join(out_dir, 'system/lib')
 
+    lib_dir = os.path.join(out_dir, 'apex/com.android.runtime/lib64/bionic/')
+    if not os.path.isdir(lib_dir):
+        lib_dir = os.path.join(out_dir, 'apex/com.android.runtime/lib/bionic/')
+
     results = set()
     for f in files:
         results |= GetFromElf(os.path.join(lib_dir, f))
diff --git a/libc/tools/test_genseccomp.py b/libc/tools/test_genseccomp.py
index 8bd3517..b833c27 100755
--- a/libc/tools/test_genseccomp.py
+++ b/libc/tools/test_genseccomp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Unit tests for genseccomp.py
 
 import textwrap
diff --git a/libc/upstream-netbsd/android/include/netbsd-compat.h b/libc/upstream-netbsd/android/include/netbsd-compat.h
index ea630b2..5dd086e 100644
--- a/libc/upstream-netbsd/android/include/netbsd-compat.h
+++ b/libc/upstream-netbsd/android/include/netbsd-compat.h
@@ -17,7 +17,7 @@
 #pragma once
 
 #define _BSD_SOURCE
-#define _GNU_SOURCE
+#define _GNU_SOURCE 1
 
 // NetBSD uses _DIAGASSERT to null-check arguments and the like,
 // but it's clear from the number of mistakes in their assertions
diff --git a/libdl/Android.bp b/libdl/Android.bp
index 3004671..750a6e2 100644
--- a/libdl/Android.bp
+++ b/libdl/Android.bp
@@ -56,7 +56,6 @@
     recovery_available: true,
     native_bridge_supported: true,
     static_ndk_lib: true,
-    llndk_stubs: "libdl.llndk",
 
     defaults: ["linux_bionic_supported"],
 
@@ -137,6 +136,9 @@
             "current",
         ],
     },
+    llndk: {
+        symbol_file: "libdl.map.txt",
+    },
 
     apex_available: [
         "//apex_available:platform",
@@ -235,12 +237,6 @@
     first_version: "9",
 }
 
-llndk_library {
-    name: "libdl.llndk",
-    native_bridge_supported: true,
-    symbol_file: "libdl.map.txt",
-}
-
 genrule {
     name: "libdl.arm.map",
     out: ["libdl.arm.map"],
diff --git a/libfdtrack/fdtrack.cpp b/libfdtrack/fdtrack.cpp
index fd56274..2e9cfbc 100644
--- a/libfdtrack/fdtrack.cpp
+++ b/libfdtrack/fdtrack.cpp
@@ -93,6 +93,8 @@
     android_fdtrack_hook_t expected = nullptr;
     installed = android_fdtrack_compare_exchange_hook(&expected, &fd_hook);
   }
+
+  android_fdtrack_set_globally_enabled(true);
 }
 
 __attribute__((destructor)) static void dtor() {
diff --git a/libm/Android.bp b/libm/Android.bp
index 10f794a..6c3abd1 100644
--- a/libm/Android.bp
+++ b/libm/Android.bp
@@ -26,7 +26,6 @@
     vendor_ramdisk_available: true,
     recovery_available: true,
     static_ndk_lib: true,
-    llndk_stubs: "libm.llndk",
 
     whole_static_libs: ["libarm-optimized-routines-math"],
 
@@ -528,6 +527,10 @@
         ],
     },
 
+    llndk: {
+        symbol_file: "libm.map.txt",
+    },
+
     apex_available: [
         "//apex_available:platform",
         "com.android.runtime",
@@ -544,12 +547,6 @@
     first_version: "9",
 }
 
-llndk_library {
-    name: "libm.llndk",
-    native_bridge_supported: true,
-    symbol_file: "libm.map.txt",
-}
-
 genrule {
     name: "libm.arm.map",
     out: ["libm.arm.map"],
diff --git a/linker/Android.bp b/linker/Android.bp
index 3370f28..4a5bf44 100644
--- a/linker/Android.bp
+++ b/linker/Android.bp
@@ -193,6 +193,7 @@
         "linker_relocate.cpp",
         "linker_sdk_versions.cpp",
         "linker_soinfo.cpp",
+        "linker_transparent_hugepage_support.cpp",
         "linker_tls.cpp",
         "linker_utils.cpp",
         "rt.cpp",
@@ -413,6 +414,19 @@
     bazel_module: { bp2build_available: true },
 }
 
+// Used to generate binaries that can be backed by transparent hugepages.
+cc_defaults {
+    name: "linker_hugepage_aligned",
+    arch: {
+        arm64: {
+            ldflags: ["-z max-page-size=0x200000"],
+        },
+        x86_64: {
+            ldflags: ["-z max-page-size=0x200000"],
+        },
+    },
+}
+
 cc_library {
     // NOTE: --exclude-libs=libgcc.a makes sure that any symbols ld-android.so pulls from
     // libgcc.a are made static to ld-android.so.  This in turn ensures that libraries that
diff --git a/linker/NOTICE b/linker/NOTICE
index 4cada69..8f70d87 100644
--- a/linker/NOTICE
+++ b/linker/NOTICE
@@ -306,3 +306,31 @@
 
 -------------------------------------------------------------------
 
+Copyright (C) 2021 The Android Open Source Project
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+
+-------------------------------------------------------------------
+
diff --git a/linker/linker.h b/linker/linker.h
index e1775fb..74bdcc7 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -110,6 +110,8 @@
 void set_application_target_sdk_version(int target);
 int get_application_target_sdk_version();
 
+bool get_transparent_hugepages_supported();
+
 enum {
   /* A regular namespace is the namespace with a custom search path that does
    * not impose any restrictions on the location of native libraries.
diff --git a/linker/linker_main.cpp b/linker/linker_main.cpp
index 0b501a7..2a690e9 100644
--- a/linker/linker_main.cpp
+++ b/linker/linker_main.cpp
@@ -31,9 +31,10 @@
 #include <link.h>
 #include <sys/auxv.h>
 
+#include "linker.h"
+#include "linker_cfi.h"
 #include "linker_debug.h"
 #include "linker_debuggerd.h"
-#include "linker_cfi.h"
 #include "linker_gdb_support.h"
 #include "linker_globals.h"
 #include "linker_phdr.h"
diff --git a/linker/linker_phdr.cpp b/linker/linker_phdr.cpp
index 9b1b99f..60fd776 100644
--- a/linker/linker_phdr.cpp
+++ b/linker/linker_phdr.cpp
@@ -70,8 +70,9 @@
     p_memsz   -> segment memory size (always >= p_filesz)
     p_vaddr   -> segment's virtual address
     p_flags   -> segment flags (e.g. readable, writable, executable)
+    p_align   -> segment's in-memory and in-file alignment
 
-  We will ignore the p_paddr and p_align fields of ElfW(Phdr) for now.
+  We will ignore the p_paddr field of ElfW(Phdr) for now.
 
   The loadable segments can be seen as a list of [p_vaddr ... p_vaddr+p_memsz)
   ranges of virtual addresses. A few rules apply:
@@ -137,6 +138,9 @@
                                       MAYBE_MAP_FLAG((x), PF_R, PROT_READ) | \
                                       MAYBE_MAP_FLAG((x), PF_W, PROT_WRITE))
 
+// Default PMD size for x86_64 and aarch64 (2MB).
+static constexpr size_t kPmdSize = (1UL << 21);
+
 ElfReader::ElfReader()
     : did_read_(false), did_load_(false), fd_(-1), file_offset_(0), file_size_(0), phdr_num_(0),
       phdr_table_(nullptr), shdr_table_(nullptr), shdr_num_(0), dynamic_(nullptr), strtab_(nullptr),
@@ -526,12 +530,40 @@
   return max_vaddr - min_vaddr;
 }
 
+// Returns the maximum p_align associated with a loadable segment in the ELF
+// program header table. Used to determine whether the file should be loaded at
+// a specific virtual address alignment for use with huge pages.
+size_t phdr_table_get_maximum_alignment(const ElfW(Phdr)* phdr_table, size_t phdr_count) {
+  size_t maximum_alignment = PAGE_SIZE;
+
+  for (size_t i = 0; i < phdr_count; ++i) {
+    const ElfW(Phdr)* phdr = &phdr_table[i];
+
+    // p_align must be 0, 1, or a positive, integral power of two.
+    if (phdr->p_type != PT_LOAD || ((phdr->p_align & (phdr->p_align - 1)) != 0)) {
+      continue;
+    }
+
+    if (phdr->p_align > maximum_alignment) {
+      maximum_alignment = phdr->p_align;
+    }
+  }
+
+#if defined(__LP64__)
+  return maximum_alignment;
+#else
+  return PAGE_SIZE;
+#endif
+}
+
 // Reserve a virtual address range such that if it's limits were extended to the next 2**align
 // boundary, it would not overlap with any existing mappings.
-static void* ReserveWithAlignmentPadding(size_t size, size_t align, void** out_gap_start,
-                                         size_t* out_gap_size) {
+static void* ReserveWithAlignmentPadding(size_t size, size_t mapping_align, size_t start_align,
+                                         void** out_gap_start, size_t* out_gap_size) {
   int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS;
-  if (align == PAGE_SIZE) {
+  // Reserve enough space to properly align the library's start address.
+  mapping_align = std::max(mapping_align, start_align);
+  if (mapping_align == PAGE_SIZE) {
     void* mmap_ptr = mmap(nullptr, size, PROT_NONE, mmap_flags, -1, 0);
     if (mmap_ptr == MAP_FAILED) {
       return nullptr;
@@ -550,24 +582,24 @@
   constexpr size_t kMaxGapUnits = 32;
   // Allocate enough space so that the end of the desired region aligned up is still inside the
   // mapping.
-  size_t mmap_size = align_up(size, align) + align - PAGE_SIZE;
+  size_t mmap_size = align_up(size, mapping_align) + mapping_align - PAGE_SIZE;
   uint8_t* mmap_ptr =
       reinterpret_cast<uint8_t*>(mmap(nullptr, mmap_size, PROT_NONE, mmap_flags, -1, 0));
   if (mmap_ptr == MAP_FAILED) {
     return nullptr;
   }
   size_t gap_size = 0;
-  size_t first_byte = reinterpret_cast<size_t>(align_up(mmap_ptr, align));
-  size_t last_byte = reinterpret_cast<size_t>(align_down(mmap_ptr + mmap_size, align) - 1);
+  size_t first_byte = reinterpret_cast<size_t>(align_up(mmap_ptr, mapping_align));
+  size_t last_byte = reinterpret_cast<size_t>(align_down(mmap_ptr + mmap_size, mapping_align) - 1);
   if (kGapAlignment && first_byte / kGapAlignment != last_byte / kGapAlignment) {
     // This library crosses a 2MB boundary and will fragment a new huge page.
     // Lets take advantage of that and insert a random number of inaccessible huge pages before that
     // to improve address randomization and make it harder to locate this library code by probing.
     munmap(mmap_ptr, mmap_size);
-    align = std::max(align, kGapAlignment);
+    mapping_align = std::max(mapping_align, kGapAlignment);
     gap_size =
         kGapAlignment * (is_first_stage_init() ? 1 : arc4random_uniform(kMaxGapUnits - 1) + 1);
-    mmap_size = align_up(size + gap_size, align) + align - PAGE_SIZE;
+    mmap_size = align_up(size + gap_size, mapping_align) + mapping_align - PAGE_SIZE;
     mmap_ptr = reinterpret_cast<uint8_t*>(mmap(nullptr, mmap_size, PROT_NONE, mmap_flags, -1, 0));
     if (mmap_ptr == MAP_FAILED) {
       return nullptr;
@@ -582,13 +614,13 @@
     gap_start = gap_end = mmap_ptr + mmap_size;
   }
 
-  uint8_t* first = align_up(mmap_ptr, align);
-  uint8_t* last = align_down(gap_start, align) - size;
+  uint8_t* first = align_up(mmap_ptr, mapping_align);
+  uint8_t* last = align_down(gap_start, mapping_align) - size;
 
   // arc4random* is not available in first stage init because /dev/urandom hasn't yet been
   // created. Don't randomize then.
-  size_t n = is_first_stage_init() ? 0 : arc4random_uniform((last - first) / PAGE_SIZE + 1);
-  uint8_t* start = first + n * PAGE_SIZE;
+  size_t n = is_first_stage_init() ? 0 : arc4random_uniform((last - first) / start_align + 1);
+  uint8_t* start = first + n * start_align;
   // Unmap the extra space around the allocation.
   // Keep it mapped PROT_NONE on 64-bit targets where address space is plentiful to make it harder
   // to defeat ASLR by probing for readable memory mappings.
@@ -622,7 +654,15 @@
              load_size_ - address_space->reserved_size, load_size_, name_.c_str());
       return false;
     }
-    start = ReserveWithAlignmentPadding(load_size_, kLibraryAlignment, &gap_start_, &gap_size_);
+    size_t start_alignment = PAGE_SIZE;
+    if (get_transparent_hugepages_supported() && get_application_target_sdk_version() >= 31) {
+      size_t maximum_alignment = phdr_table_get_maximum_alignment(phdr_table_, phdr_num_);
+      // Limit alignment to PMD size as other alignments reduce the number of
+      // bits available for ASLR for no benefit.
+      start_alignment = maximum_alignment == kPmdSize ? kPmdSize : PAGE_SIZE;
+    }
+    start = ReserveWithAlignmentPadding(load_size_, kLibraryAlignment, start_alignment, &gap_start_,
+                                        &gap_size_);
     if (start == nullptr) {
       DL_ERR("couldn't reserve %zd bytes of address space for \"%s\"", load_size_, name_.c_str());
       return false;
@@ -706,6 +746,13 @@
         DL_ERR("couldn't map \"%s\" segment %zd: %s", name_.c_str(), i, strerror(errno));
         return false;
       }
+
+      // Mark segments as huge page eligible if they meet the requirements
+      // (executable and PMD aligned).
+      if ((phdr->p_flags & PF_X) && phdr->p_align == kPmdSize &&
+          get_transparent_hugepages_supported()) {
+        madvise(seg_addr, file_length, MADV_HUGEPAGE);
+      }
     }
 
     // if the segment is writable, and does not end on a page boundary,
diff --git a/linker/linker_phdr.h b/linker/linker_phdr.h
index 548dc51..98bf020 100644
--- a/linker/linker_phdr.h
+++ b/linker/linker_phdr.h
@@ -120,6 +120,8 @@
 size_t phdr_table_get_load_size(const ElfW(Phdr)* phdr_table, size_t phdr_count,
                                 ElfW(Addr)* min_vaddr = nullptr, ElfW(Addr)* max_vaddr = nullptr);
 
+size_t phdr_table_get_maximum_alignment(const ElfW(Phdr)* phdr_table, size_t phdr_count);
+
 int phdr_table_protect_segments(const ElfW(Phdr)* phdr_table, size_t phdr_count,
                                 ElfW(Addr) load_bias, const GnuPropertySection* prop = nullptr);
 
diff --git a/libc/bionic/bionic_appcompat.h b/linker/linker_transparent_hugepage_support.cpp
similarity index 70%
rename from libc/bionic/bionic_appcompat.h
rename to linker/linker_transparent_hugepage_support.cpp
index e67e50c..65ba4cd 100644
--- a/libc/bionic/bionic_appcompat.h
+++ b/linker/linker_transparent_hugepage_support.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 The Android Open Source Project
+ * Copyright (C) 2021 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,21 +26,19 @@
  * SUCH DAMAGE.
  */
 
-#pragma once
+#include <string>
 
-constexpr int MAX_PACKAGE_NAME_LENGTH = 230;
+#include <android-base/file.h>
 
-static inline const char* const soft_mac_bind_allowlist[] = {
-    "com.cisco.anyconnect.vpn.android.avf:nchs",
-    "com.skype.raider",
-    nullptr,
-};
+#include "linker.h"
 
-static inline const char* const soft_mac_getlink_allowlist[] = {
-    "com.cisco.anyconnect.vpn.android.avf:nchs",
-    nullptr,
-};
-
-int get_package_name(char* buffer, const int bufferlen);
-bool should_apply_soft_mac_bind_restrictions();
-bool should_apply_soft_mac_getlink_restrictions();
+bool get_transparent_hugepages_supported() {
+  static bool transparent_hugepages_supported = []() {
+    std::string enabled;
+    if (!android::base::ReadFileToString("/sys/kernel/mm/transparent_hugepage/enabled", &enabled)) {
+      return false;
+    }
+    return enabled.find("[never]") == std::string::npos;
+  };
+  return transparent_hugepages_supported;
+}
diff --git a/tests/Android.bp b/tests/Android.bp
index 02a33ee..476b8f5 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -567,6 +567,9 @@
         "-Wno-strlcpy-strlcat-size",
         "-Wno-strncat-size",
     ],
+    static_libs: [
+        "libbase",
+    ],
 }
 
 cc_defaults {
@@ -575,6 +578,9 @@
         "-U_FORTIFY_SOURCE",
     ],
     srcs: ["fortify_test_main.cpp"],
+    static_libs: [
+        "libbase",
+    ],
     tidy: false,
     target: {
         host: {
@@ -839,7 +845,6 @@
             ],
             static_libs: [
                 // The order of these libraries matters, do not shuffle them.
-                "libbase",
                 "libmeminfo",
                 "libziparchive",
                 "libz",
diff --git a/tests/BionicDeathTest.h b/tests/BionicDeathTest.h
deleted file mode 100644
index f70839a..0000000
--- a/tests/BionicDeathTest.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <signal.h>
-
-#include <gtest/gtest.h>
-
-#if !defined(__BIONIC__)
-#define sigaction64 sigaction
-#endif
-
-class BionicDeathTest : public testing::Test {
- protected:
-  virtual void SetUp() {
-    // Suppress debuggerd stack traces. Too slow.
-    for (int signo : { SIGABRT, SIGBUS, SIGSEGV, SIGSYS }) {
-      struct sigaction64 action = { .sa_handler = SIG_DFL };
-      sigaction64(signo, &action, &previous_);
-    }
-  }
-
-  virtual void TearDown() {
-    for (int signo : { SIGABRT, SIGBUS, SIGSEGV, SIGSYS }) {
-      sigaction64(signo, &previous_, nullptr);
-    }
-  }
-
- private:
-  struct sigaction64 previous_;
-};
diff --git a/tests/arpa_inet_test.cpp b/tests/arpa_inet_test.cpp
index a368b8f..8dec2e3 100644
--- a/tests/arpa_inet_test.cpp
+++ b/tests/arpa_inet_test.cpp
@@ -158,3 +158,95 @@
   ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, INET6_ADDRSTRLEN));
   ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, 2*INET6_ADDRSTRLEN));
 }
+
+TEST(arpa_inet, inet_nsap_addr) {
+  // inet_nsap_addr() doesn't seem to be documented anywhere, but it's basically
+  // text to binary for arbitrarily-long strings like "0xdeadbeef". Any
+  // '.', '+', or '/' characters are ignored as punctuation. The return value is
+  // the length in bytes, or 0 for all errors.
+  u_char buf[32];
+
+  // Missing "0x" prefix.
+  ASSERT_EQ(0U, inet_nsap_addr("123", buf, sizeof(buf)));
+  ASSERT_EQ(0U, inet_nsap_addr("012", buf, sizeof(buf)));
+
+  // 1 byte.
+  ASSERT_EQ(1U, inet_nsap_addr("0x12", buf, sizeof(buf)));
+  ASSERT_EQ(0x12, buf[0]);
+
+  // 10 bytes.
+  ASSERT_EQ(10U, inet_nsap_addr("0x1234567890abcdef0011", buf, sizeof(buf)));
+  ASSERT_EQ(0x12, buf[0]);
+  ASSERT_EQ(0x34, buf[1]);
+  ASSERT_EQ(0x56, buf[2]);
+  ASSERT_EQ(0x78, buf[3]);
+  ASSERT_EQ(0x90, buf[4]);
+  ASSERT_EQ(0xab, buf[5]);
+  ASSERT_EQ(0xcd, buf[6]);
+  ASSERT_EQ(0xef, buf[7]);
+  ASSERT_EQ(0x00, buf[8]);
+  ASSERT_EQ(0x11, buf[9]);
+
+  // Ignored punctuation.
+  ASSERT_EQ(10U, inet_nsap_addr("0x1122.3344+5566/7788/99aa", buf, sizeof(buf)));
+  ASSERT_EQ(0x11, buf[0]);
+  ASSERT_EQ(0x22, buf[1]);
+  ASSERT_EQ(0x33, buf[2]);
+  ASSERT_EQ(0x44, buf[3]);
+  ASSERT_EQ(0x55, buf[4]);
+  ASSERT_EQ(0x66, buf[5]);
+  ASSERT_EQ(0x77, buf[6]);
+  ASSERT_EQ(0x88, buf[7]);
+  ASSERT_EQ(0x99, buf[8]);
+  ASSERT_EQ(0xaa, buf[9]);
+
+  // Truncated.
+  ASSERT_EQ(4U, inet_nsap_addr("0xdeadbeef666666666666", buf, 4));
+  // Overwritten...
+  ASSERT_EQ(0xde, buf[0]);
+  ASSERT_EQ(0xad, buf[1]);
+  ASSERT_EQ(0xbe, buf[2]);
+  ASSERT_EQ(0xef, buf[3]);
+  // Same as before...
+  ASSERT_EQ(0x55, buf[4]);
+  ASSERT_EQ(0x66, buf[5]);
+  ASSERT_EQ(0x77, buf[6]);
+  ASSERT_EQ(0x88, buf[7]);
+  ASSERT_EQ(0x99, buf[8]);
+  ASSERT_EQ(0xaa, buf[9]);
+
+  // Case insensitivity.
+  ASSERT_EQ(6U, inet_nsap_addr("0xaAbBcCdDeEfF", buf, 6));
+  ASSERT_EQ(0xaa, buf[0]);
+  ASSERT_EQ(0xbb, buf[1]);
+  ASSERT_EQ(0xcc, buf[2]);
+  ASSERT_EQ(0xdd, buf[3]);
+  ASSERT_EQ(0xee, buf[4]);
+  ASSERT_EQ(0xff, buf[5]);
+
+  // Punctuation isn't allowed within a byte.
+  ASSERT_EQ(0U, inet_nsap_addr("0x1.122", buf, sizeof(buf)));
+  // Invalid punctuation.
+  ASSERT_EQ(0U, inet_nsap_addr("0x11,22", buf, sizeof(buf)));
+  // Invalid hex digit.
+  ASSERT_EQ(0U, inet_nsap_addr("0x11.g2", buf, sizeof(buf)));
+  ASSERT_EQ(0U, inet_nsap_addr("0x11.2g", buf, sizeof(buf)));
+  // Invalid half-byte.
+  ASSERT_EQ(0U, inet_nsap_addr("0x11.2", buf, sizeof(buf)));
+}
+
+TEST(arpa_inet, inet_nsap_ntoa) {
+  // inet_nsap_ntoa() doesn't seem to be documented anywhere, but it's basically
+  // binary to text for arbitrarily-long byte buffers.
+  // The return value is a pointer to the buffer. No errors are possible.
+  const unsigned char bytes[] = {0x01, 0x00, 0x02, 0x0e, 0xf0, 0x20};
+  char dst[32];
+  ASSERT_EQ(dst, inet_nsap_ntoa(6, bytes, dst));
+  ASSERT_STREQ(dst, "0x01.0002.0EF0.20");
+}
+
+TEST(arpa_inet, inet_nsap_ntoa__nullptr) {
+  // If you don't provide a destination, a static buffer is provided for you.
+  const unsigned char bytes[] = {0x01, 0x00, 0x02, 0x0e, 0xf0, 0x20};
+  ASSERT_STREQ("0x01.0002.0EF0.20", inet_nsap_ntoa(6, bytes, nullptr));
+}
diff --git a/tests/assert_test.cpp b/tests/assert_test.cpp
index 714e22a..769852a 100644
--- a/tests/assert_test.cpp
+++ b/tests/assert_test.cpp
@@ -19,9 +19,9 @@
 #undef NDEBUG
 #include <assert.h>
 
-#include "BionicDeathTest.h"
+#include <android-base/silent_death_test.h>
 
-using assert_DeathTest = BionicDeathTest;
+using assert_DeathTest = SilentDeathTest;
 
 TEST(assert, assert_true) {
   assert(true);
diff --git a/tests/cfi_test.cpp b/tests/cfi_test.cpp
index d3cd8d1..9a6ed9a 100644
--- a/tests/cfi_test.cpp
+++ b/tests/cfi_test.cpp
@@ -15,12 +15,13 @@
  */
 
 #include <dlfcn.h>
-#include <gtest/gtest.h>
 #include <sys/stat.h>
 
 #include <vector>
 
-#include "BionicDeathTest.h"
+#include <android-base/silent_death_test.h>
+#include <gtest/gtest.h>
+
 #include "gtest_globals.h"
 #include "utils.h"
 
@@ -35,7 +36,7 @@
 size_t __cfi_shadow_size();
 }
 
-using cfi_test_DeathTest = BionicDeathTest;
+using cfi_test_DeathTest = SilentDeathTest;
 
 static void f() {}
 
diff --git a/tests/clang_fortify_tests.cpp b/tests/clang_fortify_tests.cpp
index 0355170..5768f1f 100644
--- a/tests/clang_fortify_tests.cpp
+++ b/tests/clang_fortify_tests.cpp
@@ -94,14 +94,14 @@
 #include <wchar.h>
 
 #ifndef COMPILATION_TESTS
+#include <android-base/silent_death_test.h>
 #include <gtest/gtest.h>
-#include "BionicDeathTest.h"
 
 #define CONCAT2(x, y) x##y
 #define CONCAT(x, y) CONCAT2(x, y)
 #define FORTIFY_TEST_NAME CONCAT(CONCAT(clang_fortify_test_, _FORTIFY_SOURCE), _DeathTest)
 
-using FORTIFY_TEST_NAME = BionicDeathTest;
+using FORTIFY_TEST_NAME = SilentDeathTest;
 
 template <typename Fn>
 __attribute__((noreturn)) static void ExitAfter(Fn&& f) {
diff --git a/tests/dl_test.cpp b/tests/dl_test.cpp
index 01c2fe4..47bf133 100644
--- a/tests/dl_test.cpp
+++ b/tests/dl_test.cpp
@@ -27,9 +27,10 @@
 #include <stdint.h>
 #include <sys/stat.h>
 
-#include <string>
-#include <iostream>
 #include <fstream>
+#include <iostream>
+#include <regex>
+#include <string>
 
 #include "gtest_globals.h"
 #include <android-base/file.h>
@@ -385,7 +386,8 @@
   ExecTestHelper eth;
   eth.SetArgs({ "readelf", "-SW", path.c_str(), nullptr });
   eth.Run([&]() { execvpe("readelf", eth.GetArgs(), eth.GetEnv()); }, 0, nullptr);
-  ASSERT_TRUE(eth.GetOutput().find(expectation) != std::string::npos) << eth.GetOutput();
+
+  ASSERT_TRUE(std::regex_search(eth.GetOutput(), std::regex(expectation))) << eth.GetOutput();
 
   // Can we load it?
   void* handle = dlopen(lib, RTLD_NOW);
@@ -398,31 +400,29 @@
 }
 
 TEST(dl, relocations_RELR) {
-  RelocationsTest("librelocations-RELR.so",
-      ".relr.dyn            RELR");
+  RelocationsTest("librelocations-RELR.so", "\\.relr\\.dyn * RELR");
 }
 
 TEST(dl, relocations_ANDROID_RELR) {
-  RelocationsTest("librelocations-ANDROID_RELR.so",
-      ".relr.dyn            ANDROID_RELR");
+  RelocationsTest("librelocations-ANDROID_RELR.so", "\\.relr\\.dyn * ANDROID_RELR");
 }
 
 TEST(dl, relocations_ANDROID_REL) {
   RelocationsTest("librelocations-ANDROID_REL.so",
 #if __LP64__
-      ".rela.dyn            ANDROID_RELA"
+                  "\\.rela\\.dyn * ANDROID_RELA"
 #else
-      ".rel.dyn             ANDROID_REL"
+                  "\\.rel\\.dyn * ANDROID_REL"
 #endif
-      );
+  );
 }
 
 TEST(dl, relocations_fat) {
   RelocationsTest("librelocations-fat.so",
 #if __LP64__
-      ".rela.dyn            RELA"
+                  "\\.rela\\.dyn * RELA"
 #else
-      ".rel.dyn             REL"
+                  "\\.rel\\.dyn * REL"
 #endif
-      );
+  );
 }
diff --git a/tests/error_test.cpp b/tests/error_test.cpp
index e03c8d4..e114f06 100644
--- a/tests/error_test.cpp
+++ b/tests/error_test.cpp
@@ -30,7 +30,9 @@
 
 #include <error.h>
 
-#include "BionicDeathTest.h"
+#include <android-base/silent_death_test.h>
+
+using error_DeathTest = SilentDeathTest;
 
 static size_t g_test_error_print_progname_invocation_count;
 
diff --git a/tests/fdsan_test.cpp b/tests/fdsan_test.cpp
index c294ff3..016970f 100644
--- a/tests/fdsan_test.cpp
+++ b/tests/fdsan_test.cpp
@@ -16,8 +16,6 @@
 
 #include <gtest/gtest.h>
 
-#include "BionicDeathTest.h"
-
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -32,6 +30,7 @@
 
 #include <unordered_map>
 
+#include <android-base/silent_death_test.h>
 #include <android-base/unique_fd.h>
 
 #define FDSAN_TEST(test_name) TEST_F(FdsanTest, test_name)
@@ -49,12 +48,12 @@
   }
 };
 
-struct fdsan_DeathTest : public BionicDeathTest {
+struct fdsan_DeathTest : public SilentDeathTest {
 #if defined(__BIONIC__)
   void SetUp() override {
     android_fdsan_set_error_level(ANDROID_FDSAN_ERROR_LEVEL_FATAL);
     signal(BIONIC_SIGNAL_DEBUGGER, SIG_DFL);  // Disable debuggerd.
-    BionicDeathTest::SetUp();
+    SilentDeathTest::SetUp();
   }
 #endif
 };
diff --git a/tests/fdtrack_test.cpp b/tests/fdtrack_test.cpp
index 13f1b2e..9fcb402 100644
--- a/tests/fdtrack_test.cpp
+++ b/tests/fdtrack_test.cpp
@@ -57,8 +57,13 @@
   }
 }
 
-std::vector<android_fdtrack_event> FdtrackRun(void (*func)()) {
+std::vector<android_fdtrack_event> FdtrackRun(void (*func)(), bool reenable = true) {
   // Each bionic test is run in separate process, so we can safely use a static here.
+  // However, since they're all forked, we need to reenable fdtrack.
+  if (reenable) {
+    android_fdtrack_set_globally_enabled(true);
+  }
+
   static std::vector<android_fdtrack_event> events;
   events.clear();
 
@@ -129,6 +134,21 @@
 #endif
 }
 
+TEST(fdtrack, fork) {
+#if defined(__BIONIC__)
+  ASSERT_EXIT(
+      []() {
+        static int fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
+        ASSERT_NE(-1, fd);
+
+        auto events = FdtrackRun([]() { close(fd); }, false);
+        ASSERT_EQ(0U, events.size());
+        exit(0);
+      }(),
+      testing::ExitedWithCode(0), "");
+#endif
+}
+
 TEST(fdtrack, enable_disable) {
 #if defined(__BIONIC__)
   static int fd1 = -1;
diff --git a/tests/fortify_test.cpp b/tests/fortify_test.cpp
index 3ca0223..4abee67 100644
--- a/tests/fortify_test.cpp
+++ b/tests/fortify_test.cpp
@@ -15,7 +15,6 @@
  */
 
 #include <gtest/gtest.h>
-#include "BionicDeathTest.h"
 
 #include <fcntl.h>
 #include <malloc.h>
@@ -28,6 +27,8 @@
 #include <sys/types.h>
 #include <time.h>
 
+#include <android-base/silent_death_test.h>
+
 #if __BIONIC__
 #define ASSERT_FORTIFY(expr) ASSERT_EXIT(expr, testing::KilledBySignal(SIGABRT), "FORTIFY")
 #else
@@ -40,7 +41,7 @@
 #define DEATHTEST_EVALUATOR(name) DEATHTEST_PASTER(name)
 #define DEATHTEST DEATHTEST_EVALUATOR(TEST_NAME)
 
-class DEATHTEST : public BionicDeathTest {};
+using DEATHTEST = SilentDeathTest;
 
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE == 2
 struct foo {
diff --git a/tests/math_test.cpp b/tests/math_test.cpp
index 1dd45b4..9f7e65b 100644
--- a/tests/math_test.cpp
+++ b/tests/math_test.cpp
@@ -1473,16 +1473,40 @@
   ASSERT_EQ(-1, sign);
 }
 
+TEST(MATH_TEST, tgamma_NaN) {
+  ASSERT_TRUE(isnan(tgamma(nan(""))));
+  ASSERT_TRUE(isnanf(tgammaf(nanf(""))));
+  ASSERT_TRUE(isnanl(tgammal(nanl(""))));
+}
+
+TEST(MATH_TEST, tgamma_inf) {
+  ASSERT_TRUE(isinf(tgamma(HUGE_VAL)));
+  ASSERT_TRUE(isinff(tgammaf(HUGE_VALF)));
+  ASSERT_TRUE(isinfl(tgammal(HUGE_VALL)));
+}
+
+TEST(MATH_TEST, tgamma_negative) {
+  ASSERT_TRUE(isnan(tgamma(-1.0)));
+  ASSERT_TRUE(isnanf(tgammaf(-1.0f)));
+  ASSERT_TRUE(isnanl(tgammal(-1.0L)));
+}
+
 TEST(MATH_TEST, tgamma) {
   ASSERT_DOUBLE_EQ(24.0, tgamma(5.0));
+  ASSERT_DOUBLE_EQ(120.0, tgamma(6.0));
+  ASSERT_TRUE(isinf(tgamma(172.0)));
 }
 
 TEST(MATH_TEST, tgammaf) {
   ASSERT_FLOAT_EQ(24.0f, tgammaf(5.0f));
+  ASSERT_FLOAT_EQ(120.0f, tgammaf(6.0f));
+  ASSERT_TRUE(isinff(tgammaf(172.0f)));
 }
 
 TEST(MATH_TEST, tgammal) {
   ASSERT_DOUBLE_EQ(24.0L, tgammal(5.0L));
+  ASSERT_DOUBLE_EQ(120.0L, tgammal(6.0L));
+  ASSERT_TRUE(isinf(tgammal(172.0L)));
 }
 
 TEST(MATH_TEST, j0) {
diff --git a/tests/pidfd_test.cpp b/tests/pidfd_test.cpp
index 7c691ef..b9fadb4 100644
--- a/tests/pidfd_test.cpp
+++ b/tests/pidfd_test.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <gtest/gtest.h>
+
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
@@ -24,16 +26,13 @@
 #include <sys/pidfd.h>
 #endif
 
+#include <android-base/silent_death_test.h>
 #include <android-base/unique_fd.h>
 
-#include <gtest/gtest.h>
-
-#include "BionicDeathTest.h"
-
 using android::base::unique_fd;
 using namespace std::chrono_literals;
 
-using pidfd_DeathTest = BionicDeathTest;
+using pidfd_DeathTest = SilentDeathTest;
 
 TEST(pidfd, pidfd_open) {
 #if defined(__BIONIC__)
diff --git a/tests/pthread_test.cpp b/tests/pthread_test.cpp
index 1cbe3de..1a00460 100644
--- a/tests/pthread_test.cpp
+++ b/tests/pthread_test.cpp
@@ -38,14 +38,14 @@
 #include <android-base/macros.h>
 #include <android-base/parseint.h>
 #include <android-base/scopeguard.h>
+#include <android-base/silent_death_test.h>
 #include <android-base/strings.h>
 
 #include "private/bionic_constants.h"
-#include "BionicDeathTest.h"
 #include "SignalUtils.h"
 #include "utils.h"
 
-using pthread_DeathTest = BionicDeathTest;
+using pthread_DeathTest = SilentDeathTest;
 
 TEST(pthread, pthread_key_create) {
   pthread_key_t key;
diff --git a/tests/semaphore_test.cpp b/tests/semaphore_test.cpp
index ed0fcf1..f3f6020 100644
--- a/tests/semaphore_test.cpp
+++ b/tests/semaphore_test.cpp
@@ -17,17 +17,18 @@
 #include <semaphore.h>
 
 #include <errno.h>
-#include <gtest/gtest.h>
 #include <limits.h>
 #include <pthread.h>
 #include <time.h>
 #include <unistd.h>
 
-#include "BionicDeathTest.h"
+#include <android-base/silent_death_test.h>
+#include <gtest/gtest.h>
+
 #include "SignalUtils.h"
 #include "private/bionic_constants.h"
 
-using semaphore_DeathTest = BionicDeathTest;
+using semaphore_DeathTest = SilentDeathTest;
 
 TEST(semaphore, sem_init) {
   sem_t s;
diff --git a/tests/setjmp_test.cpp b/tests/setjmp_test.cpp
index e6b6819..ee126eb 100644
--- a/tests/setjmp_test.cpp
+++ b/tests/setjmp_test.cpp
@@ -18,11 +18,14 @@
 
 #include <setjmp.h>
 #include <stdlib.h>
+#include <sys/syscall.h>
+#include <unistd.h>
 
-#include "BionicDeathTest.h"
+#include <android-base/silent_death_test.h>
+
 #include "SignalUtils.h"
 
-using setjmp_DeathTest = BionicDeathTest;
+using setjmp_DeathTest = SilentDeathTest;
 
 TEST(setjmp, setjmp_smoke) {
   int value;
@@ -268,3 +271,57 @@
   if (value == 0) call_longjmp(buf);
   EXPECT_EQ(123, value);
 }
+
+TEST(setjmp, bug_152210274) {
+  // Ensure that we never have a mangled value in the stack pointer.
+#if defined(__BIONIC__)
+  struct sigaction sa = {.sa_flags = SA_SIGINFO, .sa_sigaction = [](int, siginfo_t*, void*) {}};
+  ASSERT_EQ(0, sigaction(SIGPROF, &sa, 0));
+
+  constexpr size_t kNumThreads = 20;
+
+  // Start a bunch of threads calling setjmp/longjmp.
+  auto jumper = [](void* arg) -> void* {
+    sigset_t set;
+    sigemptyset(&set);
+    sigaddset(&set, SIGPROF);
+    pthread_sigmask(SIG_UNBLOCK, &set, nullptr);
+
+    jmp_buf buf;
+    for (size_t count = 0; count < 100000; ++count) {
+      if (setjmp(buf) != 0) {
+        perror("setjmp");
+        abort();
+      }
+      if (*static_cast<pid_t*>(arg) == 100) longjmp(buf, 1);
+    }
+    return nullptr;
+  };
+  pid_t tids[kNumThreads] = {};
+  for (size_t i = 0; i < kNumThreads; ++i) {
+    pthread_t t;
+    ASSERT_EQ(0, pthread_create(&t, nullptr, jumper, &tids[i]));
+    tids[i] = pthread_gettid_np(t);
+  }
+
+  // Start the interrupter thread.
+  auto interrupter = [](void* arg) -> void* {
+    pid_t* tids = static_cast<pid_t*>(arg);
+    for (size_t count = 0; count < 1000; ++count) {
+      for (size_t i = 0; i < kNumThreads; i++) {
+        if (tgkill(getpid(), tids[i], SIGPROF) == -1 && errno != ESRCH) {
+          perror("tgkill failed");
+          abort();
+        }
+      }
+      usleep(100);
+    }
+    return nullptr;
+  };
+  pthread_t t;
+  ASSERT_EQ(0, pthread_create(&t, nullptr, interrupter, tids));
+  pthread_join(t, nullptr);
+#else
+  GTEST_SKIP() << "tests uses functions not in glibc";
+#endif
+}
diff --git a/tests/stack_protector_test.cpp b/tests/stack_protector_test.cpp
index 9fe7bb1..a95e037 100644
--- a/tests/stack_protector_test.cpp
+++ b/tests/stack_protector_test.cpp
@@ -19,7 +19,6 @@
  */
 
 #include <gtest/gtest.h>
-#include "BionicDeathTest.h"
 
 #include <pthread.h>
 #include <stdint.h>
@@ -27,6 +26,8 @@
 #include <unistd.h>
 #include <set>
 
+#include <android-base/silent_death_test.h>
+
 #include "private/bionic_tls.h"
 
 extern "C" pid_t gettid(); // glibc defines this but doesn't declare it anywhere.
@@ -99,7 +100,7 @@
 #endif
 }
 
-class stack_protector_DeathTest : public BionicDeathTest {};
+using stack_protector_DeathTest = SilentDeathTest;
 
 TEST_F(stack_protector_DeathTest, modify_stack_protector) {
   // In another file to prevent inlining, which removes stack protection.
diff --git a/tests/stdio_test.cpp b/tests/stdio_test.cpp
index 5491589..5736e17 100644
--- a/tests/stdio_test.cpp
+++ b/tests/stdio_test.cpp
@@ -33,10 +33,10 @@
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/silent_death_test.h>
 #include <android-base/test_utils.h>
 #include <android-base/unique_fd.h>
 
-#include "BionicDeathTest.h"
 #include "utils.h"
 
 // This #include is actually a test too. We have to duplicate the
@@ -56,8 +56,8 @@
 
 using namespace std::string_literals;
 
-using stdio_DeathTest = BionicDeathTest;
-using stdio_nofortify_DeathTest = BionicDeathTest;
+using stdio_DeathTest = SilentDeathTest;
+using stdio_nofortify_DeathTest = SilentDeathTest;
 
 static void SetFileTo(const char* path, const char* content) {
   FILE* fp;
diff --git a/tests/stdlib_test.cpp b/tests/stdlib_test.cpp
index 90ef861..6c7966d 100644
--- a/tests/stdlib_test.cpp
+++ b/tests/stdlib_test.cpp
@@ -31,9 +31,9 @@
 
 #include <android-base/file.h>
 #include <android-base/macros.h>
+#include <android-base/silent_death_test.h>
 #include <gtest/gtest.h>
 
-#include "BionicDeathTest.h"
 #include "math_data_test.h"
 #include "utils.h"
 
@@ -447,7 +447,7 @@
 // Even though this isn't really a death test, we have to say "DeathTest" here so gtest knows to
 // run this test (which exits normally) in its own process.
 
-class stdlib_DeathTest : public BionicDeathTest {};
+using stdlib_DeathTest = SilentDeathTest;
 
 TEST_F(stdlib_DeathTest, getenv_after_main_thread_exits) {
   // https://code.google.com/p/android/issues/detail?id=57421
diff --git a/tests/system_properties_test.cpp b/tests/system_properties_test.cpp
index 6d696c7..aa8fef4 100644
--- a/tests/system_properties_test.cpp
+++ b/tests/system_properties_test.cpp
@@ -15,7 +15,6 @@
  */
 
 #include <gtest/gtest.h>
-#include "BionicDeathTest.h"
 
 #include <errno.h>
 #include <sys/wait.h>
@@ -25,6 +24,7 @@
 #include <thread>
 
 #include <android-base/file.h>
+#include <android-base/silent_death_test.h>
 
 using namespace std::literals;
 
@@ -425,7 +425,7 @@
          WTERMSIG(exit_status) == SIGABRT);
 }
 
-class properties_DeathTest : public BionicDeathTest {};
+using properties_DeathTest = SilentDeathTest;
 
 TEST_F(properties_DeathTest, read_only) {
 #if defined(__BIONIC__)
diff --git a/tests/threads_test.cpp b/tests/threads_test.cpp
index 5fafff3..c1e9b12 100644
--- a/tests/threads_test.cpp
+++ b/tests/threads_test.cpp
@@ -60,7 +60,8 @@
 
 #include <thread>
 
-#include "BionicDeathTest.h"
+#include <android-base/silent_death_test.h>
+
 #include "SignalUtils.h"
 
 TEST(threads, call_once) {
@@ -361,7 +362,7 @@
 #endif
 }
 
-class threads_DeathTest : public BionicDeathTest {};
+using threads_DeathTest = SilentDeathTest;
 
 TEST(threads_DeathTest, thrd_exit_main_thread) {
 #if !defined(HAVE_THREADS_H)
diff --git a/tests/time_test.cpp b/tests/time_test.cpp
index 7c2c890..b16fe16 100644
--- a/tests/time_test.cpp
+++ b/tests/time_test.cpp
@@ -31,8 +31,6 @@
 #include "SignalUtils.h"
 #include "utils.h"
 
-#include "private/bionic_constants.h"
-
 using namespace std::chrono_literals;
 
 TEST(time, time) {
@@ -760,22 +758,22 @@
 
 TEST(time, clock_gettime) {
   // Try to ensure that our vdso clock_gettime is working.
+  timespec ts0;
   timespec ts1;
-  ASSERT_EQ(0, clock_gettime(CLOCK_MONOTONIC, &ts1));
   timespec ts2;
-  ASSERT_EQ(0, syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts2));
+  ASSERT_EQ(0, clock_gettime(CLOCK_MONOTONIC, &ts0));
+  ASSERT_EQ(0, syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts1));
+  ASSERT_EQ(0, clock_gettime(CLOCK_MONOTONIC, &ts2));
 
-  // What's the difference between the two?
-  ts2.tv_sec -= ts1.tv_sec;
-  ts2.tv_nsec -= ts1.tv_nsec;
-  if (ts2.tv_nsec < 0) {
-    --ts2.tv_sec;
-    ts2.tv_nsec += NS_PER_S;
+  // Check we have a nice monotonic timestamp sandwich.
+  ASSERT_LE(ts0.tv_sec, ts1.tv_sec);
+  if (ts0.tv_sec == ts1.tv_sec) {
+    ASSERT_LE(ts0.tv_nsec, ts1.tv_nsec);
   }
-
-  // To try to avoid flakiness we'll accept answers within 10,000,000ns (0.01s).
-  ASSERT_EQ(0, ts2.tv_sec);
-  ASSERT_LT(ts2.tv_nsec, 10'000'000);
+  ASSERT_LE(ts1.tv_sec, ts2.tv_sec);
+  if (ts1.tv_sec == ts2.tv_sec) {
+    ASSERT_LE(ts1.tv_nsec, ts2.tv_nsec);
+  }
 }
 
 TEST(time, clock_gettime_CLOCK_REALTIME) {
@@ -851,11 +849,15 @@
 }
 
 TEST(time, clock) {
-  // clock(3) is hard to test, but a 1s sleep should cost less than 20ms.
+  // clock(3) is hard to test, but a 1s sleep should cost less than 10ms on average.
+  static const clock_t N = 5;
+  static const clock_t mean_limit_ms = 10;
   clock_t t0 = clock();
-  sleep(1);
+  for (size_t i = 0; i < N; ++i) {
+    sleep(1);
+  }
   clock_t t1 = clock();
-  ASSERT_LT(t1 - t0, 20 * (CLOCKS_PER_SEC / 1000));
+  ASSERT_LT(t1 - t0, N * mean_limit_ms * (CLOCKS_PER_SEC / 1000));
 }
 
 static pid_t GetInvalidPid() {
diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
index 595ba90..7d1e612 100644
--- a/tests/unistd_test.cpp
+++ b/tests/unistd_test.cpp
@@ -16,7 +16,6 @@
 
 #include <gtest/gtest.h>
 
-#include "BionicDeathTest.h"
 #include "SignalUtils.h"
 #include "utils.h"
 
@@ -37,6 +36,7 @@
 #include <chrono>
 
 #include <android-base/file.h>
+#include <android-base/silent_death_test.h>
 #include <android-base/strings.h>
 
 #include "private/get_cpu_count_from_string.h"
@@ -53,6 +53,8 @@
 #define UNISTD_DEATHTEST unistd_DeathTest
 #endif
 
+using UNISTD_DEATHTEST = SilentDeathTest;
+
 using namespace std::chrono_literals;
 
 static void* get_brk() {
@@ -711,8 +713,6 @@
   }
 }
 
-class UNISTD_DEATHTEST : public BionicDeathTest {};
-
 TEST_F(UNISTD_DEATHTEST, abort) {
   ASSERT_EXIT(abort(), testing::KilledBySignal(SIGABRT), "");
 }
diff --git a/tests/wchar_test.cpp b/tests/wchar_test.cpp
index 9b4fc4f..d0b5a4a 100644
--- a/tests/wchar_test.cpp
+++ b/tests/wchar_test.cpp
@@ -228,14 +228,22 @@
 }
 
 TEST(wchar, wcsstr) {
-  const wchar_t* haystack = L"matches hello world, not the second hello world";
-  const wchar_t* empty_needle = L"";
-  const wchar_t* good_needle = L"ll";
-  const wchar_t* bad_needle = L"wort";
+  const wchar_t* haystack = L"big daddy/giant haystacks!";
+  const wchar_t* empty_haystack = L"";
 
-  ASSERT_EQ(haystack, wcsstr(haystack, empty_needle));
-  ASSERT_EQ(&haystack[10], wcsstr(haystack, good_needle));
-  ASSERT_EQ(nullptr, wcsstr(haystack, bad_needle));
+  // The empty needle is a special case.
+  ASSERT_EQ(haystack, wcsstr(haystack, L""));
+  ASSERT_EQ(empty_haystack, wcsstr(empty_haystack, L""));
+
+  ASSERT_EQ(haystack, wcsstr(haystack, L"b"));
+  ASSERT_EQ(haystack, wcsstr(haystack, L"big"));
+  ASSERT_EQ(haystack + 9, wcsstr(haystack, L"/"));
+  ASSERT_EQ(haystack + 9, wcsstr(haystack, L"/giant"));
+  ASSERT_EQ(haystack + 25, wcsstr(haystack, L"!"));
+  ASSERT_EQ(haystack + 19, wcsstr(haystack, L"stacks!"));
+
+  ASSERT_EQ(nullptr, wcsstr(haystack, L"monkey"));
+  ASSERT_EQ(nullptr, wcsstr(empty_haystack, L"monkey"));
 }
 
 TEST(wchar, wcsstr_80199) {
@@ -646,6 +654,8 @@
   EXPECT_EQ(dst, wcsncpy(dst, src, 6));
   dst[6] = L'\0';
   EXPECT_STREQ(dst, L"Source");
+  EXPECT_EQ(dst, wcsncpy(dst, L"clobber", 0));
+  EXPECT_STREQ(dst, L"Source");
 
   wmemset(dst, L'x', NUM_WCHARS(sizeof(dst)));
   EXPECT_EQ(dst, wcsncpy(dst, src, src_len + 4));
@@ -1024,3 +1034,169 @@
   EXPECT_EQ(2, wcwidth(L'ㅜ')); // Korean "crying" emoticon.
   EXPECT_EQ(2, wcwidth(L'ㅋ')); // Korean "laughing" emoticon.
 }
+
+TEST(wchar, wcswidth) {
+  EXPECT_EQ(2, wcswidth(L"abc", 2));
+  EXPECT_EQ(2, wcswidth(L"ab\t", 2));
+  EXPECT_EQ(-1, wcswidth(L"a\tb", 2));
+}
+
+TEST(wchar, wcslcpy) {
+#if defined(__BIONIC__)
+  wchar_t dst[32];
+  ASSERT_EQ(11U, wcslcpy(dst, L"hello world", 3));
+  ASSERT_STREQ(L"he", dst);
+  ASSERT_EQ(11U, wcslcpy(dst, L"hello world", 32));
+  ASSERT_STREQ(L"hello world", dst);
+#else
+  GTEST_SKIP() << "no wcslcpy in glibc";
+#endif
+}
+
+TEST(wchar, wcscat) {
+  wchar_t dst[32];
+  ASSERT_EQ(dst, wcscat(dst, L"hello"));
+  ASSERT_STREQ(dst, L"hello");
+  ASSERT_EQ(dst, wcscat(dst, L" world"));
+  ASSERT_STREQ(dst, L"hello world");
+}
+
+TEST(wchar, wcscpy) {
+  wchar_t dst[32];
+  ASSERT_EQ(dst, wcscpy(dst, L"hello"));
+  ASSERT_STREQ(dst, L"hello");
+  ASSERT_EQ(dst, wcscpy(dst, L"world"));
+  ASSERT_STREQ(dst, L"world");
+}
+
+TEST(wchar, wcscasecmp) {
+  ASSERT_EQ(0, wcscasecmp(L"hello", L"HELLO"));
+  ASSERT_TRUE(wcscasecmp(L"hello1", L"HELLO2") < 0);
+  ASSERT_TRUE(wcscasecmp(L"hello2", L"HELLO1") > 0);
+  ASSERT_TRUE(wcscasecmp(L"hello", L"HELL") > 0);
+  ASSERT_TRUE(wcscasecmp(L"hell", L"HELLO") < 0);
+}
+
+TEST(wchar, wcscspn) {
+  ASSERT_EQ(0U, wcscspn(L"hello world", L"abcdefghijklmnopqrstuvwxyz"));
+  ASSERT_EQ(5U, wcscspn(L"hello world", L" "));
+  ASSERT_EQ(11U, wcscspn(L"hello world", L"!"));
+}
+
+TEST(wchar, wcsspn) {
+  ASSERT_EQ(0U, wcsspn(L"hello world", L"!"));
+  ASSERT_EQ(5U, wcsspn(L"hello world", L"abcdefghijklmnopqrstuvwxyz"));
+  ASSERT_EQ(11U, wcsspn(L"hello world", L"abcdefghijklmnopqrstuvwxyz "));
+}
+
+TEST(wchar, wcsdup) {
+  wchar_t* s = wcsdup(L"hello");
+  ASSERT_STREQ(s, L"hello");
+  free(s);
+}
+
+TEST(wchar, wcslcat) {
+#if defined(__BIONIC__)
+  wchar_t dst[4] = {};
+  ASSERT_EQ(1U, wcslcat(dst, L"a", 4));
+  ASSERT_EQ(7U, wcslcat(dst, L"bcdefg", 4));
+  ASSERT_STREQ(dst, L"abc");
+#else
+  GTEST_SKIP() << "no wcslcpy in glibc";
+#endif
+}
+
+TEST(wchar, wcsncasecmp) {
+  ASSERT_EQ(0, wcsncasecmp(L"foo", L"bar", 0));
+
+  ASSERT_EQ(0, wcsncasecmp(L"hello1", L"HELLO2", 5));
+  ASSERT_TRUE(wcsncasecmp(L"hello1", L"HELLO2", 6) < 0);
+  ASSERT_TRUE(wcsncasecmp(L"hello2", L"HELLO1", 6) > 0);
+  ASSERT_TRUE(wcsncasecmp(L"hello", L"HELL", 5) > 0);
+  ASSERT_TRUE(wcsncasecmp(L"hell", L"HELLO", 5) < 0);
+}
+
+TEST(wchar, wcsncat) {
+  wchar_t dst[32];
+  ASSERT_EQ(dst, wcsncat(dst, L"hello, world!", 5));
+  ASSERT_STREQ(dst, L"hello");
+  ASSERT_EQ(dst, wcsncat(dst, L"hello, world!", 0));
+  ASSERT_STREQ(dst, L"hello");
+  ASSERT_EQ(dst, wcsncat(dst, L", world!", 8));
+  ASSERT_STREQ(dst, L"hello, world!");
+}
+
+TEST(wchar, wcsncmp) {
+  ASSERT_EQ(0, wcsncmp(L"foo", L"bar", 0));
+  ASSERT_EQ(0, wcsncmp(L"aaaa", L"aaab", 3));
+  ASSERT_TRUE(wcsncmp(L"aaaa", L"aaab", 4) < 0);
+  ASSERT_TRUE(wcsncmp(L"aaab", L"aaaa", 4) > 0);
+}
+
+TEST(wchar, wcsnlen) {
+  ASSERT_EQ(2U, wcsnlen(L"hello", 2));
+  ASSERT_EQ(5U, wcsnlen(L"hello", 5));
+  ASSERT_EQ(5U, wcsnlen(L"hello", 666));
+}
+
+TEST(wchar, wcspbrk) {
+  const wchar_t* s = L"hello, world!";
+  ASSERT_EQ(nullptr, wcspbrk(s, L"-"));
+  ASSERT_EQ(s, wcspbrk(s, L"abch"));
+  ASSERT_EQ(s + 2, wcspbrk(s, L"l"));
+  ASSERT_EQ(s + 5, wcspbrk(s, L",. !"));
+}
+
+TEST(wchar, wcstok) {
+  wchar_t s[] = L"this is\ta\nstring";
+  wchar_t* p;
+  ASSERT_EQ(s, wcstok(s, L"\t\n ", &p));
+  ASSERT_STREQ(s, L"this");
+  ASSERT_STREQ(p, L"is\ta\nstring");
+  ASSERT_EQ(s + 5, wcstok(nullptr, L"\t\n ", &p));
+  ASSERT_STREQ(s + 5, L"is");
+  ASSERT_STREQ(p, L"a\nstring");
+  ASSERT_EQ(s + 8, wcstok(nullptr, L"\t\n ", &p));
+  ASSERT_STREQ(s + 8, L"a");
+  ASSERT_STREQ(p, L"string");
+  ASSERT_EQ(s + 10, wcstok(nullptr, L"\t\n ", &p));
+  ASSERT_STREQ(s + 10, L"string");
+  ASSERT_EQ(nullptr, p);
+}
+
+TEST(wchar, wmemchr) {
+  const wchar_t* s = L"hello, world!";
+  ASSERT_EQ(s, wmemchr(s, L'h', 13));
+  ASSERT_EQ(s + 5, wmemchr(s, L',', 13));
+  ASSERT_EQ(s + 12, wmemchr(s, L'!', 13));
+  ASSERT_EQ(nullptr, wmemchr(s, L'a', 13));
+}
+
+TEST(wchar, wmemcmp) {
+  ASSERT_EQ(0, wmemcmp(L"aaaa", L"aaab", 3));
+  ASSERT_TRUE(wmemcmp(L"aaaa", L"aaab", 4) < 0);
+  ASSERT_TRUE(wmemcmp(L"aaab", L"aaaa", 4) > 0);
+}
+
+TEST(wchar, wmemcpy) {
+  wchar_t dst[32] = {};
+  ASSERT_EQ(dst, wmemcpy(dst, L"hello", 5));
+  ASSERT_STREQ(dst, L"hello");
+}
+
+TEST(wchar, wmemmove) {
+  wchar_t dst[32] = {};
+  ASSERT_EQ(dst, wmemmove(dst, L"hello", 5));
+  ASSERT_STREQ(dst, L"hello");
+}
+
+TEST(wchar, wmemset) {
+  wchar_t dst[4] = {};
+  ASSERT_EQ(dst, wmemset(dst, 0x12345678, 3));
+  ASSERT_EQ(dst[0], wchar_t(0x12345678));
+  ASSERT_EQ(dst[1], wchar_t(0x12345678));
+  ASSERT_EQ(dst[2], wchar_t(0x12345678));
+  ASSERT_EQ(dst[3], wchar_t(0));
+  ASSERT_EQ(dst, wmemset(dst, L'y', 0));
+  ASSERT_EQ(dst[0], wchar_t(0x12345678));
+}
diff --git a/tools/generate-version-script.py b/tools/generate-version-script.py
index acfe218..def621e 100755
--- a/tools/generate-version-script.py
+++ b/tools/generate-version-script.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # This tool is used to generate the version scripts for libc, libm, libdl,
 # and libstdc++ for every architecture.
diff --git a/tools/versioner/run_tests.py b/tools/versioner/run_tests.py
index f3bb6db..396f895 100755
--- a/tools/versioner/run_tests.py
+++ b/tools/versioner/run_tests.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 
 import os
 import subprocess