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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2017-07-24 12:04:28 +0200
committerIngo Molnar <mingo@kernel.org>2017-11-10 08:04:19 +0100
commitb8347c2196492f4e1cccde3d92fda1cc2cc7de7e (patch)
tree5de43435f937ffaa8ea5525517c5aef848faf2bb /fs/quota
parentx86/mm: Fix ELF_ET_DYN_BASE for 5-level paging (diff)
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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>
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