diff --git a/include/utils/SortedVector.h b/include/utils/SortedVector.h
index 2d3e82a..85bd263 100644
--- a/include/utils/SortedVector.h
+++ b/include/utils/SortedVector.h
@@ -38,18 +38,18 @@
 
 public:
             typedef TYPE    value_type;
-    
-    /*! 
+
+    /*!
      * Constructors and destructors
      */
-    
+
                             SortedVector();
                             SortedVector(const SortedVector<TYPE>& rhs);
     virtual                 ~SortedVector();
 
     /*! copy operator */
-    const SortedVector<TYPE>&   operator = (const SortedVector<TYPE>& rhs) const;    
-    SortedVector<TYPE>&         operator = (const SortedVector<TYPE>& rhs);    
+    const SortedVector<TYPE>&   operator = (const SortedVector<TYPE>& rhs) const;
+    SortedVector<TYPE>&         operator = (const SortedVector<TYPE>& rhs);
 
     /*
      * empty the vector
@@ -57,7 +57,7 @@
 
     inline  void            clear()             { VectorImpl::clear(); }
 
-    /*! 
+    /*!
      * vector stats
      */
 
@@ -70,11 +70,11 @@
     //! sets the capacity. capacity can never be reduced less than size()
     inline  ssize_t         setCapacity(size_t size)    { return VectorImpl::setCapacity(size); }
 
-    /*! 
+    /*!
      * C-style array access
      */
-     
-    //! read-only C-style access 
+
+    //! read-only C-style access
     inline  const TYPE*     array() const;
 
     //! read-write C-style access. BE VERY CAREFUL when modifying the array
@@ -83,12 +83,12 @@
 
             //! finds the index of an item
             ssize_t         indexOf(const TYPE& item) const;
-            
+
             //! finds where this item should be inserted
             size_t          orderOf(const TYPE& item) const;
-            
-    
-    /*! 
+
+
+    /*!
      * accessors
      */
 
@@ -105,7 +105,7 @@
 
             //! add an item in the right place (and replace the one that is there)
             ssize_t         add(const TYPE& item);
-            
+
             //! editItemAt() MUST NOT change the order of this item
             TYPE&           editItemAt(size_t index) {
                 return *( static_cast<TYPE *>(VectorImpl::editItemLocation(index)) );
@@ -114,7 +114,7 @@
             //! merges a vector into this one
             ssize_t         merge(const Vector<TYPE>& vector);
             ssize_t         merge(const SortedVector<TYPE>& vector);
-            
+
             //! removes an item
             ssize_t         remove(const TYPE&);
 
@@ -122,7 +122,24 @@
     inline  ssize_t         removeItemsAt(size_t index, size_t count = 1);
     //! remove one item
     inline  ssize_t         removeAt(size_t index)  { return removeItemsAt(index); }
-            
+
+    /*
+     * these inlines add some level of compatibility with STL.
+     */
+    typedef TYPE* iterator;
+    typedef TYPE const* const_iterator;
+
+    inline iterator begin() { return editArray(); }
+    inline iterator end()   { return editArray() + size(); }
+    inline const_iterator begin() const { return array(); }
+    inline const_iterator end() const   { return array() + size(); }
+    inline void reserve(size_t n) { setCapacity(n); }
+    inline bool empty() const{ return isEmpty(); }
+    inline iterator erase(iterator pos) {
+        ssize_t index = removeItemsAt(pos-array());
+        return begin() + index;
+    }
+
 protected:
     virtual void    do_construct(void* storage, size_t num) const;
     virtual void    do_destroy(void* storage, size_t num) const;
@@ -164,13 +181,13 @@
 template<class TYPE> inline
 SortedVector<TYPE>& SortedVector<TYPE>::operator = (const SortedVector<TYPE>& rhs) {
     SortedVectorImpl::operator = (rhs);
-    return *this; 
+    return *this;
 }
 
 template<class TYPE> inline
 const SortedVector<TYPE>& SortedVector<TYPE>::operator = (const SortedVector<TYPE>& rhs) const {
     SortedVectorImpl::operator = (rhs);
-    return *this; 
+    return *this;
 }
 
 template<class TYPE> inline
diff --git a/include/utils/Unicode.h b/include/utils/Unicode.h
index cddbab4..a13f347 100644
--- a/include/utils/Unicode.h
+++ b/include/utils/Unicode.h
@@ -31,7 +31,7 @@
 char16_t *strncpy16(char16_t *, const char16_t *, size_t);
 char16_t *strstr16(const char16_t*, const char16_t*);
 
-// Version of comparison that supports embedded nulls.
+// Version of comparison that supports embedded NULs.
 // This is different than strncmp() because we don't stop
 // at a nul character and consider the strings to be different
 // if the lengths are different (thus we need to supply the
@@ -58,7 +58,7 @@
  * large enough to store the string, the part of the "src" string is stored
  * into "dst" as much as possible. See the examples for more detail.
  * Returns the size actually used for storing the string.
- * dst" is not null-terminated when dst_len is fully used (like strncpy).
+ * dst" is not nul-terminated when dst_len is fully used (like strncpy).
  *
  * Example 1
  * "src" == \u3042\u3044 (\xE3\x81\x82\xE3\x81\x84)
@@ -67,7 +67,7 @@
  * ->
  * Returned value == 6
  * "dst" becomes \xE3\x81\x82\xE3\x81\x84\0
- * (note that "dst" is null-terminated)
+ * (note that "dst" is nul-terminated)
  *
  * Example 2
  * "src" == \u3042\u3044 (\xE3\x81\x82\xE3\x81\x84)
@@ -76,7 +76,7 @@
  * ->
  * Returned value == 3
  * "dst" becomes \xE3\x81\x82\0
- * (note that "dst" is null-terminated, but \u3044 is not stored in "dst"
+ * (note that "dst" is nul-terminated, but \u3044 is not stored in "dst"
  * since "dst" does not have enough size to store the character)
  *
  * Example 3
@@ -86,7 +86,7 @@
  * ->
  * Returned value == 6
  * "dst" becomes \xE3\x81\x82\xE3\x81\x84
- * (note that "dst" is NOT null-terminated, like strncpy)
+ * (note that "dst" is NOT nul-terminated, like strncpy)
  */
 void utf32_to_utf8(const char32_t* src, size_t src_len, char* dst, size_t dst_len);
 
@@ -108,7 +108,7 @@
 /**
  * Converts a UTF-16 string to UTF-8. The destination buffer must be large
  * enough to fit the UTF-16 as measured by utf16_to_utf8_length with an added
- * NULL terminator.
+ * NUL terminator.
  */
 void utf16_to_utf8(const char16_t* src, size_t src_len, char* dst, size_t dst_len);
 
@@ -118,7 +118,7 @@
  * is an invalid string.
  *
  * This function should be used to determine whether "src" is valid UTF-8
- * characters with valid unicode codepoints. "src" must be null-terminated.
+ * characters with valid unicode codepoints. "src" must be nul-terminated.
  *
  * If you are going to use other utf8_to_... functions defined in this header
  * with string which may not be valid UTF-8 with valid codepoint (form 0 to
@@ -138,35 +138,38 @@
 /**
  * Stores a UTF-32 string converted from "src" in "dst". "dst" must be large
  * enough to store the entire converted string as measured by
- * utf8_to_utf32_length plus space for a NULL terminator.
+ * utf8_to_utf32_length plus space for a NUL terminator.
  */
 void utf8_to_utf32(const char* src, size_t src_len, char32_t* dst);
 
 /**
- * Returns the UTF-16 length of UTF-8 string "src".
+ * Returns the UTF-16 length of UTF-8 string "src". Returns -1 in case
+ * it's invalid utf8. No buffer over-read occurs because of bound checks. Using overreadIsFatal you
+ * can ask to log a message and fail in case the invalid utf8 could have caused an override if no
+ * bound checks were used (otherwise -1 is returned).
  */
-ssize_t utf8_to_utf16_length(const uint8_t* src, size_t srcLen);
+ssize_t utf8_to_utf16_length(const uint8_t* src, size_t srcLen, bool overreadIsFatal = false);
 
 /**
  * Convert UTF-8 to UTF-16 including surrogate pairs.
- * Returns a pointer to the end of the string (where a null terminator might go
- * if you wanted to add one).
+ * Returns a pointer to the end of the string (where a NUL terminator might go
+ * if you wanted to add one). At most dstLen characters are written; it won't emit half a surrogate
+ * pair. If dstLen == 0 nothing is written and dst is returned. If dstLen > SSIZE_MAX it aborts
+ * (this being probably a negative number returned as an error and casted to unsigned).
  */
-char16_t* utf8_to_utf16_no_null_terminator(const uint8_t* src, size_t srcLen, char16_t* dst);
+char16_t* utf8_to_utf16_no_null_terminator(
+        const uint8_t* src, size_t srcLen, char16_t* dst, size_t dstLen);
 
 /**
- * Convert UTF-8 to UTF-16 including surrogate pairs. The destination buffer
- * must be large enough to hold the result as measured by utf8_to_utf16_length
- * plus an added NULL terminator.
+ * Convert UTF-8 to UTF-16 including surrogate pairs. At most dstLen - 1
+ * characters are written; it won't emit half a surrogate pair; and a NUL terminator is appended
+ * after. dstLen - 1 can be measured beforehand using utf8_to_utf16_length. Aborts if dstLen == 0
+ * (at least one character is needed for the NUL terminator) or dstLen > SSIZE_MAX (the latter
+ * case being likely a negative number returned as an error and casted to unsigned) . Returns a
+ * pointer to the NUL terminator.
  */
-void utf8_to_utf16(const uint8_t* src, size_t srcLen, char16_t* dst);
-
-/**
- * Like utf8_to_utf16_no_null_terminator, but you can supply a maximum length of the
- * decoded string.  The decoded string will fill up to that length; if it is longer
- * the returned pointer will be to the character after dstLen.
- */
-char16_t* utf8_to_utf16_n(const uint8_t* src, size_t srcLen, char16_t* dst, size_t dstLen);
+char16_t *utf8_to_utf16(
+        const uint8_t* src, size_t srcLen, char16_t* dst, size_t dstLen);
 
 }
 
diff --git a/init/init.cpp b/init/init.cpp
index 78d71a8..29e8cbb 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -18,6 +18,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <fstream>
 #include <libgen.h>
 #include <paths.h>
 #include <signal.h>
@@ -247,6 +248,113 @@
     return result;
 }
 
+static void security_failure() {
+    LOG(ERROR) << "Security failure; rebooting into recovery mode...";
+    android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
+    while (true) { pause(); }  // never reached
+}
+
+#define MMAP_RND_PATH "/proc/sys/vm/mmap_rnd_bits"
+#define MMAP_RND_COMPAT_PATH "/proc/sys/vm/mmap_rnd_compat_bits"
+
+/* __attribute__((unused)) due to lack of mips support: see mips block
+ * in set_mmap_rnd_bits_action */
+static bool __attribute__((unused)) set_mmap_rnd_bits_min(int start, int min, bool compat) {
+    std::string path;
+    if (compat) {
+        path = MMAP_RND_COMPAT_PATH;
+    } else {
+        path = MMAP_RND_PATH;
+    }
+    std::ifstream inf(path, std::fstream::in);
+    if (!inf) {
+        LOG(ERROR) << "Cannot open for reading: " << path;
+        return false;
+    }
+    while (start >= min) {
+        // try to write out new value
+        std::string str_val = std::to_string(start);
+        std::ofstream of(path, std::fstream::out);
+        if (!of) {
+            LOG(ERROR) << "Cannot open for writing: " << path;
+            return false;
+        }
+        of << str_val << std::endl;
+        of.close();
+
+        // check to make sure it was recorded
+        inf.seekg(0);
+        std::string str_rec;
+        inf >> str_rec;
+        if (str_val.compare(str_rec) == 0) {
+            break;
+        }
+        start--;
+    }
+    inf.close();
+    if (start < min) {
+        LOG(ERROR) << "Unable to set minimum required entropy " << min << " in " << path;
+        return false;
+    }
+    return true;
+}
+
+/*
+ * Set /proc/sys/vm/mmap_rnd_bits and potentially
+ * /proc/sys/vm/mmap_rnd_compat_bits to the maximum supported values.
+ * Returns -1 if unable to set these to an acceptable value.
+ *
+ * To support this sysctl, the following upstream commits are needed:
+ *
+ * d07e22597d1d mm: mmap: add new /proc tunable for mmap_base ASLR
+ * e0c25d958f78 arm: mm: support ARCH_MMAP_RND_BITS
+ * 8f0d3aa9de57 arm64: mm: support ARCH_MMAP_RND_BITS
+ * 9e08f57d684a x86: mm: support ARCH_MMAP_RND_BITS
+ * ec9ee4acd97c drivers: char: random: add get_random_long()
+ * 5ef11c35ce86 mm: ASLR: use get_random_long()
+ */
+static int set_mmap_rnd_bits_action(const std::vector<std::string>& args)
+{
+    int ret = -1;
+
+    /* values are arch-dependent */
+#if defined(__aarch64__)
+    /* arm64 supports 18 - 33 bits depending on pagesize and VA_SIZE */
+    if (set_mmap_rnd_bits_min(33, 24, false)
+            && set_mmap_rnd_bits_min(16, 16, true)) {
+        ret = 0;
+    }
+#elif defined(__x86_64__)
+    /* x86_64 supports 28 - 32 bits */
+    if (set_mmap_rnd_bits_min(32, 32, false)
+            && set_mmap_rnd_bits_min(16, 16, true)) {
+        ret = 0;
+    }
+#elif defined(__arm__) || defined(__i386__)
+    /* check to see if we're running on 64-bit kernel */
+    bool h64 = !access(MMAP_RND_COMPAT_PATH, F_OK);
+    /* supported 32-bit architecture must have 16 bits set */
+    if (set_mmap_rnd_bits_min(16, 16, h64)) {
+        ret = 0;
+    }
+#elif defined(__mips__) || defined(__mips64__)
+    // TODO: add mips support b/27788820
+    ret = 0;
+#else
+    ERROR("Unknown architecture\n");
+#endif
+
+#ifdef __BRILLO__
+    // TODO: b/27794137
+    ret = 0;
+#endif
+    if (ret == -1) {
+        LOG(ERROR) << "Unable to set adequate mmap entropy value!";
+        security_failure();
+    }
+    return ret;
+}
+
 static int keychord_init_action(const std::vector<std::string>& args)
 {
     keychord_init();
@@ -403,12 +511,6 @@
     return 0;
 }
 
-static void security_failure() {
-    LOG(ERROR) << "Security failure; rebooting into recovery mode...";
-    android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
-    while (true) { pause(); }  // never reached
-}
-
 static void selinux_initialize(bool in_kernel_domain) {
     Timer t;
 
@@ -572,6 +674,7 @@
     am.QueueBuiltinAction(wait_for_coldboot_done_action, "wait_for_coldboot_done");
     // ... so that we can start queuing up actions that require stuff from /dev.
     am.QueueBuiltinAction(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
+    am.QueueBuiltinAction(set_mmap_rnd_bits_action, "set_mmap_rnd_bits");
     am.QueueBuiltinAction(keychord_init_action, "keychord_init");
     am.QueueBuiltinAction(console_init_action, "console_init");
 
diff --git a/libcutils/fs_config.c b/libcutils/fs_config.c
index 9acfa58..a6eaf11 100644
--- a/libcutils/fs_config.c
+++ b/libcutils/fs_config.c
@@ -146,6 +146,10 @@
     /* Support FIFO scheduling mode in SurfaceFlinger. */
     { 00755, AID_SYSTEM,    AID_GRAPHICS,     CAP_MASK_LONG(CAP_SYS_NICE), "system/bin/surfaceflinger" },
 
+    /* Support hostapd administering a network interface. */
+    { 00755, AID_WIFI,      AID_WIFI,     CAP_MASK_LONG(CAP_NET_ADMIN) |
+                                          CAP_MASK_LONG(CAP_NET_RAW),    "system/bin/hostapd" },
+
     { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/uncrypt" },
     { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/install-recovery.sh" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/*" },
diff --git a/libutils/String16.cpp b/libutils/String16.cpp
index ac12d8a..9f5cfea 100644
--- a/libutils/String16.cpp
+++ b/libutils/String16.cpp
@@ -71,7 +71,7 @@
         u8cur = (const uint8_t*) u8str;
         char16_t* u16str = (char16_t*)buf->data();
 
-        utf8_to_utf16(u8cur, u8len, u16str);
+        utf8_to_utf16(u8cur, u8len, u16str, ((size_t) u16len) + 1);
 
         //printf("Created UTF-16 string from UTF-8 \"%s\":", in);
         //printHexData(1, str, buf->size(), 16, 1);
diff --git a/libutils/Unicode.cpp b/libutils/Unicode.cpp
index ba084f6..5f96efa 100644
--- a/libutils/Unicode.cpp
+++ b/libutils/Unicode.cpp
@@ -17,6 +17,7 @@
 #include <log/log.h>
 #include <utils/Unicode.h>
 
+#include <limits.h>
 #include <stddef.h>
 
 #if defined(_WIN32)
@@ -542,7 +543,7 @@
     //printf("Char at %p: len=%d, utf-16=%p\n", src, length, (void*)result);
 }
 
-ssize_t utf8_to_utf16_length(const uint8_t* u8str, size_t u8len)
+ssize_t utf8_to_utf16_length(const uint8_t* u8str, size_t u8len, bool overreadIsFatal)
 {
     const uint8_t* const u8end = u8str + u8len;
     const uint8_t* u8cur = u8str;
@@ -552,6 +553,20 @@
     while (u8cur < u8end) {
         u16measuredLen++;
         int u8charLen = utf8_codepoint_len(*u8cur);
+        // Malformed utf8, some characters are beyond the end.
+        // Cases:
+        // If u8charLen == 1, this becomes u8cur >= u8end, which cannot happen as u8cur < u8end,
+        // then this condition fail and we continue, as expected.
+        // If u8charLen == 2, this becomes u8cur + 1 >= u8end, which fails only if
+        // u8cur == u8end - 1, that is, there was only one remaining character to read but we need
+        // 2 of them. This condition holds and we return -1, as expected.
+        if (u8cur + u8charLen - 1 >= u8end) {
+            if (overreadIsFatal) {
+                LOG_ALWAYS_FATAL("Attempt to overread computing length of utf8 string");
+            } else {
+                return -1;
+            }
+        }
         uint32_t codepoint = utf8_to_utf32_codepoint(u8cur, u8charLen);
         if (codepoint > 0xFFFF) u16measuredLen++; // this will be a surrogate pair in utf16
         u8cur += u8charLen;
@@ -568,38 +583,21 @@
     return u16measuredLen;
 }
 
-char16_t* utf8_to_utf16_no_null_terminator(const uint8_t* u8str, size_t u8len, char16_t* u16str)
-{
-    const uint8_t* const u8end = u8str + u8len;
-    const uint8_t* u8cur = u8str;
-    char16_t* u16cur = u16str;
-
-    while (u8cur < u8end) {
-        size_t u8len = utf8_codepoint_len(*u8cur);
-        uint32_t codepoint = utf8_to_utf32_codepoint(u8cur, u8len);
-
-        // Convert the UTF32 codepoint to one or more UTF16 codepoints
-        if (codepoint <= 0xFFFF) {
-            // Single UTF16 character
-            *u16cur++ = (char16_t) codepoint;
-        } else {
-            // Multiple UTF16 characters with surrogates
-            codepoint = codepoint - 0x10000;
-            *u16cur++ = (char16_t) ((codepoint >> 10) + 0xD800);
-            *u16cur++ = (char16_t) ((codepoint & 0x3FF) + 0xDC00);
-        }
-
-        u8cur += u8len;
-    }
-    return u16cur;
-}
-
-void utf8_to_utf16(const uint8_t* u8str, size_t u8len, char16_t* u16str) {
-    char16_t* end = utf8_to_utf16_no_null_terminator(u8str, u8len, u16str);
+char16_t* utf8_to_utf16(const uint8_t* u8str, size_t u8len, char16_t* u16str, size_t u16len) {
+    // A value > SSIZE_MAX is probably a negative value returned as an error and casted.
+    LOG_ALWAYS_FATAL_IF(u16len == 0 || u16len > SSIZE_MAX, "u16len is %zu", u16len);
+    char16_t* end = utf8_to_utf16_no_null_terminator(u8str, u8len, u16str, u16len - 1);
     *end = 0;
+    return end;
 }
 
-char16_t* utf8_to_utf16_n(const uint8_t* src, size_t srcLen, char16_t* dst, size_t dstLen) {
+char16_t* utf8_to_utf16_no_null_terminator(
+        const uint8_t* src, size_t srcLen, char16_t* dst, size_t dstLen) {
+    if (dstLen == 0) {
+        return dst;
+    }
+    // A value > SSIZE_MAX is probably a negative value returned as an error and casted.
+    LOG_ALWAYS_FATAL_IF(dstLen > SSIZE_MAX, "dstLen is %zu", dstLen);
     const uint8_t* const u8end = src + srcLen;
     const uint8_t* u8cur = src;
     const char16_t* const u16end = dst + dstLen;
diff --git a/libutils/tests/Unicode_test.cpp b/libutils/tests/Unicode_test.cpp
index c263f75..d23e43a 100644
--- a/libutils/tests/Unicode_test.cpp
+++ b/libutils/tests/Unicode_test.cpp
@@ -98,7 +98,7 @@
 
     char16_t output[1 + 1 + 1 + 2 + 1]; // Room for NULL
 
-    utf8_to_utf16(str, sizeof(str), output);
+    utf8_to_utf16(str, sizeof(str), output, sizeof(output) / sizeof(output[0]));
 
     EXPECT_EQ(0x0030, output[0])
             << "should be U+0030";
@@ -147,4 +147,15 @@
     EXPECT_EQ(nullptr, result);
 }
 
+// http://b/29267949
+// Test that overreading in utf8_to_utf16_length is detected
+TEST_F(UnicodeTest, InvalidUtf8OverreadDetected) {
+    // An utf8 char starting with \xc4 is two bytes long.
+    // Add extra zeros so no extra memory is read in case the code doesn't
+    // work as expected.
+    static char utf8[] = "\xc4\x00\x00\x00";
+    ASSERT_DEATH(utf8_to_utf16_length((uint8_t *) utf8, strlen(utf8),
+            true /* overreadIsFatal */), "" /* regex for ASSERT_DEATH */);
+}
+
 }
diff --git a/rootdir/init.rc b/rootdir/init.rc
index f276b55..f65f470 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -285,7 +285,8 @@
     # Mount shared so changes propagate into child namespaces
     mount rootfs rootfs / shared rec
     # Mount default storage into root namespace
-    mount none /mnt/runtime/default /storage slave bind rec
+    mount none /mnt/runtime/default /storage bind rec
+    mount none none /storage slave rec
 
     # Make sure /sys/kernel/debug (if present) is labeled properly
     restorecon_recursive /sys/kernel/debug
diff --git a/rootdir/ueventd.rc b/rootdir/ueventd.rc
index 6ef491c..bf87b43 100644
--- a/rootdir/ueventd.rc
+++ b/rootdir/ueventd.rc
@@ -19,6 +19,7 @@
 /dev/hw_random            0440   root       system
 /dev/ashmem               0666   root       root
 /dev/binder               0666   root       root
+/dev/hwbinder             0666   root       root
 
 # Anyone can read the logs, but if they're not in the "logs"
 # group, then they'll only see log entries for their UID.