diff --git a/libc/Android.bp b/libc/Android.bp
index 4df94a0..ec00f28 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -1869,6 +1869,21 @@
     ],
 }
 
+cc_object {
+    name: "kuser_helper_on",
+    local_include_dirs: ["include"],
+    arch: {
+        arm: {
+            srcs: ["arch-arm/bionic/kuser_helper_on.S"],
+        },
+    },
+
+    defaults: [
+        "crt_defaults",
+        "crt_so_defaults",
+    ],
+}
+
 // Android.mk:ignore
 cc_object {
     name: "crtbegin_so1",
@@ -1893,6 +1908,11 @@
         "crtbegin_so1",
         "crtbrand",
     ],
+    arch: {
+        arm: {
+            objs: ["kuser_helper_on"],
+        },
+    },
 }
 
 // Android.mk:ignore
@@ -1951,6 +1971,11 @@
         "crtbegin_static1",
         "crtbrand",
     ],
+    arch: {
+        arm: {
+            objs: ["kuser_helper_on"],
+        },
+    },
     defaults: ["crt_defaults"],
 }
 
@@ -1997,6 +2022,11 @@
         "crtbegin_dynamic1",
         "crtbrand",
     ],
+    arch: {
+        arm: {
+            objs: ["kuser_helper_on"],
+        },
+    },
     defaults: ["crt_defaults"],
 }
 
diff --git a/libc/NOTICE b/libc/NOTICE
index fd6cee6..550b9d6 100644
--- a/libc/NOTICE
+++ b/libc/NOTICE
@@ -932,6 +932,34 @@
 
 -------------------------------------------------------------------
 
+Copyright (C) 2017 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.
+
+-------------------------------------------------------------------
+
 Copyright (c) 1980, 1983, 1988, 1993
    The Regents of the University of California.  All rights reserved.
 
diff --git a/libc/arch-arm/bionic/kuser_helper_on.S b/libc/arch-arm/bionic/kuser_helper_on.S
new file mode 100644
index 0000000..e59d0d5
--- /dev/null
+++ b/libc/arch-arm/bionic/kuser_helper_on.S
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+	.section	.note.android.kuser_helper_off,"a",%note
+	.align	2
+	.type	abitag, %object
+abitag:
+	.long	2f-1f			/* int32_t namesz */
+	.long	3f-2f			/* int32_t descsz */
+	.long	3			/* int32_t type */
+1:	.ascii	"Android\0"		/* char name[] */
+2:	.long	1	/* int32_t on */
+3:
+	.size	abitag, .-abitag