commit e3a49a8661125f24aec8a1453e54b3b78005e21e
author Nick Kralevich <nnk@google.com> Mon Jan 14 14:46:26 2013 -0800
committer Nick Kralevich <nnk@google.com> Wed Jan 16 10:09:52 2013 -0800
tree a6a1be7dbdf1901db051fcfa1bd19f823e7a7f2b
parent 14e1975e13c197180ed0481f305f83a362b16a24

stack protector: use AT_RANDOM

Populate the stack canaries from the kernel supplied
AT_RANDOM value, which doesn't involve any system calls.
This is slightly faster (6 fewer syscalls) and avoids
unnecessarily reading /dev/urandom, which depletes entropy.

Bug: 7959813

Change-Id: If2b43100a2a9929666df3de56b6139fed969e0f1

libc/bionic/libc_init_static.c

diff --git a/libc/bionic/libc_init_static.c b/libc/bionic/libc_init_static.c
index 24a4397..1cef632 100644
--- a/libc/bionic/libc_init_static.c
+++ b/libc/bionic/libc_init_static.c
@@ -96,7 +96,7 @@
     int  argc;
     char **argv, **envp;
 
-    __libc_init_tls(NULL);
+    __libc_init_tls(elfdata);
 
     /* Initialize the C runtime environment */
     __libc_init_common(elfdata);