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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-13 09:49:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-13 09:49:20 -0700 |
| commit | 96054569190bdec375fe824e48ca1f4e3b53dd36 (patch) | |
| tree | 13e249da75a0667e2c9d195e9c125fb14d721e71 /firmware | |
| parent | 5528f9132cf65d4d892bcbc5684c61e7822b21e9 (diff) | |
| download | linux-3.10-96054569190bdec375fe824e48ca1f4e3b53dd36.tar.gz linux-3.10-96054569190bdec375fe824e48ca1f4e3b53dd36.tar.bz2 linux-3.10-96054569190bdec375fe824e48ca1f4e3b53dd36.zip | |
x86: don't send SIGBUS for kernel page faults
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>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions