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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2017-07-24 12:04:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-10 08:04:19 +0100 |
| commit | b8347c2196492f4e1cccde3d92fda1cc2cc7de7e (patch) | |
| tree | 5de43435f937ffaa8ea5525517c5aef848faf2bb /arch/x86/events/amd/iommu.c | |
| parent | x86/mm: Fix ELF_ET_DYN_BASE for 5-level paging (diff) | |
| download | linux-b8347c2196492f4e1cccde3d92fda1cc2cc7de7e.tar.xz linux-b8347c2196492f4e1cccde3d92fda1cc2cc7de7e.zip | |
x86/debug: Handle warnings before the notifier chain, to fix KGDB crash
Commit:
9a93848fe787 ("x86/debug: Implement __WARN() using UD0")
turned warnings into UD0, but the fixup code only runs after the
notify_die() chain. This is a problem, in particular, with kgdb,
which kicks in as if it was a BUG().
Fix this by running the fixup code before the notifier chain in
the invalid op handler path.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Tested-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Weinberger <richard.weinberger@gmail.com>
Cc: <stable@vger.kernel.org> # v4.12+
Link: http://lkml.kernel.org/r/20170724100428.19173-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/events/amd/iommu.c')
0 files changed, 0 insertions, 0 deletions