From: Andy Lutomirski luto@kernel.org
[ 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/faaf688265a7e1a5b944d6f8bc0f6368158306d3.158405240... Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/x86/ptrace_syscall.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/x86/ptrace_syscall.c b/tools/testing/selftests/x86/ptrace_syscall.c index 1e3da137a8bb9..5390c827a359e 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();