diff options
| author | Andy Lutomirski <luto@kernel.org> | 2019-07-02 20:43:04 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 16:24:56 +0200 |
| commit | 697096b14444f458fb81212d1c82d7846e932455 (patch) | |
| tree | 1a3cf653b6a319c52e45752f7948e53b42433a72 /arch/x86/kernel | |
| parent | 539bca535decb11a0861b6205c6684b8e908589b (diff) | |
selftests/x86/fsgsbase: Fix some test case bugs
This refactors do_unexpected_base() to clean up some code. It also
fixes the following bugs in test_ptrace_write_gsbase():
- Incorrect printf() format string caused crashes.
- Hardcoded 0x7 for the gs selector was not reliably correct.
It also documents the fact that the test is expected to fail on old
kernels.
Fixes: a87730cc3acc ("selftests/x86/fsgsbase: Test ptracer-induced GSBASE write with FSGSBASE")
Fixes: 1b6858d5a2eb ("selftests/x86/fsgsbase: Test ptracer-induced GSBASE write")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "BaeChang Seok" <chang.seok.bae@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: "BaeChang Seok" <chang.seok.bae@intel.com>
Link: https://lkml.kernel.org/r/bab29c84f2475e2c30ddb00f1b877fcd7f4f96a8.1562125333.git.luto@kernel.org
Diffstat (limited to 'arch/x86/kernel')
0 files changed, 0 insertions, 0 deletions