x86: don't send SIGBUS for kernel page faults

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It's wrong for several reasons, but the most direct one is that the
fault may be for the stack accesses to set up a previous SIGBUS.  When
we have a kernel exception, the kernel exception handler does all the
fixups, not some user-level signal handler.

Even apart from the nested SIGBUS issue, it's also wrong to give out
kernel fault addresses in the signal handler info block, or to send a
SIGBUS when a system call already returns EFAULT.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Linus Torvalds 2010-08-13 09:49:20 -07:00

parent 5528f9132c

commit 9605456919

1 changed files with 3 additions and 1 deletions

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arch/x86/mm/fault.c

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