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[PATCH] x86_64: fix bug in csum_partial_copy_generic()

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I was observing reproducible crashes on the "movw %bx,(%rsi)" instruction
below while a process in a recvfrom() system call was copying packet data
to user space.  The patch below fixes the exception table and causes the
crash to no longer reproduce.  Please apply.

Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dave Peterson 2005-07-29 22:59:20 -07:00 committed by Linus Torvalds
parent 5ce17b18e1
commit 92ed0223ae
1 changed files with 1 additions and 1 deletions
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2
arch/x86_64/lib/csum-copy.S
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@ -188,8 +188,8 @@ csum_partial_copy_generic:
source
movw (%rdi),%bx
adcl %ebx,%eax
dest
decl %ecx
dest
movw %bx,(%rsi)
leaq 2(%rdi),%rdi
leaq 2(%rsi),%rsi