49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* Check incompatibility with legacy JIT engine.
|
|
Copyright (C) 2020-2022 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <x86intrin.h>
|
|
#include <sys/mman.h>
|
|
#include <support/test-driver.h>
|
|
#include <support/xsignal.h>
|
|
#include <support/xunistd.h>
|
|
|
|
/* Check that mmapped legacy code trigges segfault with -fcf-protection. */
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
/* NB: This test should trigger SIGSEGV on CET platforms. If SHSTK
|
|
is disabled, assuming IBT is also disabled. */
|
|
if (_get_ssp () == 0)
|
|
return EXIT_UNSUPPORTED;
|
|
|
|
void (*funcp) (void);
|
|
funcp = xmmap (NULL, 0x1000, PROT_EXEC | PROT_READ | PROT_WRITE,
|
|
MAP_ANONYMOUS | MAP_PRIVATE, -1);
|
|
printf ("mmap = %p\n", funcp);
|
|
/* Write RET instruction. */
|
|
*(char *) funcp = 0xc3;
|
|
funcp ();
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
#define EXPECTED_SIGNAL (_get_ssp () == 0 ? 0 : SIGSEGV)
|
|
#include <support/test-driver.c>
|