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| author | Andy Lutomirski <luto@kernel.org> | 2020-03-13 01:35:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 08:57:06 +0300 |
| commit | 0d800dd4019ce0f35d45acadf58582ee8959fa6a (patch) | |
| tree | 9a55855f47899e6cbe311c68ae806cf50fef9460 /tools | |
| parent | af35b1733f9414419465be2e4eae8fa1a7d00ed1 (diff) | |
| download | linux-0d800dd4019ce0f35d45acadf58582ee8959fa6a.tar.xz | |
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 5105b49cd8aa..8b3c1236f04d 100644 --- a/tools/testing/selftests/x86/ptrace_syscall.c +++ b/tools/testing/selftests/x86/ptrace_syscall.c @@ -284,8 +284,12 @@ 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(); |