diff options
| author | Andy Lutomirski <luto@kernel.org> | 2020-03-12 15:35:51 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 07:58:48 +0200 |
| commit | e9a6040f7a9d60e490ece8bc548ec47f50851a0a (patch) | |
| tree | 88a492dd2bd8746c788f169517a73cc8b11d8124 /tools | |
| parent | c7539ebd22e9d42c19e12de6d4488a388d51572a (diff) | |
selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
[ Upstream commit 630b99ab60aa972052a4202a1ff96c7e45eb0054 ]
If AT_SYSINFO is not present, don't try to call a NULL pointer.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/faaf688265a7e1a5b944d6f8bc0f6368158306d3.1584052409.git.luto@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/x86/ptrace_syscall.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tools/testing/selftests/x86/ptrace_syscall.c b/tools/testing/selftests/x86/ptrace_syscall.c index 1e3da137a8bb..5390c827a359 100644 --- a/tools/testing/selftests/x86/ptrace_syscall.c +++ b/tools/testing/selftests/x86/ptrace_syscall.c @@ -413,8 +413,12 @@ int main() #if defined(__i386__) && (!defined(__GLIBC__) || __GLIBC__ > 2 || __GLIBC_MINOR__ >= 16) vsyscall32 = (void *)getauxval(AT_SYSINFO); - printf("[RUN]\tCheck AT_SYSINFO return regs\n"); - test_sys32_regs(do_full_vsyscall32); + if (vsyscall32) { + printf("[RUN]\tCheck AT_SYSINFO return regs\n"); + test_sys32_regs(do_full_vsyscall32); + } else { + printf("[SKIP]\tAT_SYSINFO is not available\n"); + } #endif test_ptrace_syscall_restart(); |