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selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
authorAndy Lutomirski <luto@kernel.org>
Thu, 12 Mar 2020 22:35:51 +0000 (15:35 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 24 Apr 2020 05:58:48 +0000 (07:58 +0200)
commite9a6040f7a9d60e490ece8bc548ec47f50851a0a
tree88a492dd2bd8746c788f169517a73cc8b11d8124tree
parentc7539ebd22e9d42c19e12de6d4488a388d51572acommit | 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>
tools/testing/selftests/x86/ptrace_syscall.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git