sh: fix unaligned and nonexistent address handling

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unaligned and nonexistent address causes wrong exception
handling in traps_32.c(handle_unaligned_access).

'handle_unalinged_ins' should return -EFAULT if address error
is fixed up with kernel exception table, otherwise
'handle_unaligned_access' increases already fixed program counter
and then crash.

for example
   ioctl(fd, TCGETA, (struct termio *)-1)
never return and stay in TASK_UNINTERRUPTIBLE state forever
in my kernel.

Signed-off-by: SUGIOKA Toshinobu <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

...

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SUGIOKA Toshinobu 2009-01-21 09:42:10 +09:00 • committed by Paul Mundt

parent eb6434d9e7

commit 2afb447f33

1 changed files with 4 additions and 5 deletions

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arch/sh/kernel/traps_32.c

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