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authorIngo Molnar <mingo@kernel.org>2013-10-10 10:16:30 +0200
committerIngo Molnar <mingo@kernel.org>2013-10-11 07:39:14 +0200
commit3f0116c3238a96bc18ad4b4acefe4e7be32fa861 (patch)
treeb30e1fd03f2ab222051d8d1eb776bd1895416497 /init
parent2fe80d3bbf1c8bd9efc5b8154207c8dd104e7306 (diff)
downloadlinux-linaro-stable-3f0116c3238a96bc18ad4b4acefe4e7be32fa861.tar.gz
compiler/gcc4: Add quirk for 'asm goto' miscompilation bug
Fengguang Wu, Oleg Nesterov and Peter Zijlstra tracked down a kernel crash to a GCC bug: GCC miscompiles certain 'asm goto' constructs, as outlined here: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 Implement a workaround suggested by Jakub Jelinek. Reported-and-tested-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Suggested-by: Jakub Jelinek <jakub@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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