mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 06:10:10 +00:00
ed421fca42
__stack_chk_fail is called on corrupted stack. Stack backtrace is very unreliable against corrupted stack. __libc_message is changed to accept enum __libc_message_action and call BEFORE_ABORT only if action includes do_backtrace. __fortify_fail_abort is added to avoid backtrace from __stack_chk_fail. [BZ #12189] * debug/Makefile (CFLAGS-tst-ssp-1.c): New. (tests): Add tst-ssp-1 if -fstack-protector works. * debug/fortify_fail.c: Include <stdbool.h>. (_fortify_fail_abort): New function. (__fortify_fail): Call _fortify_fail_abort. (__fortify_fail_abort): Add a hidden definition. * debug/stack_chk_fail.c: Include <stdbool.h>. (__stack_chk_fail): Call __fortify_fail_abort, instead of __fortify_fail. * debug/tst-ssp-1.c: New file. * include/stdio.h (__libc_message_action): New enum. (__libc_message): Replace int with enum __libc_message_action. (__fortify_fail_abort): New hidden prototype. * malloc/malloc.c (malloc_printerr): Update __libc_message calls. * sysdeps/posix/libc_fatal.c (__libc_message): Replace int with enum __libc_message_action. Call BEFORE_ABORT only if action includes do_backtrace. (__libc_fatal): Update __libc_message call.
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/* Verify that __stack_chk_fail won't segfault.
|
|
Copyright (C) 2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* Based on gcc.dg/ssp-1.c from GCC testsuite. */
|
|
|
|
#include <signal.h>
|
|
|
|
static void
|
|
__attribute__ ((noinline, noclone))
|
|
test (char *foo)
|
|
{
|
|
int i;
|
|
|
|
/* smash stack */
|
|
for (i = 0; i <= 400; i++)
|
|
foo[i] = 42;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
char foo[30];
|
|
|
|
test (foo);
|
|
|
|
return 1; /* fail */
|
|
}
|
|
|
|
#define EXPECTED_SIGNAL SIGABRT
|
|
#include <support/test-driver.c>
|