tree 1ecb618129bba703034bbb03223acbb977d55761
parent 5ce17b18e16177dd6409dabd38df5c2c9b58fc2d
author Dave Peterson <[EMAIL PROTECTED]> Sat, 30 Jul 2005 12:59:20 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sun, 31 Jul 2005 00:14:47 -0700
[PATCH] x86_64: fix bug in csum_partial_copy_generic()
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 <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
arch/x86_64/lib/csum-copy.S | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86_64/lib/csum-copy.S b/arch/x86_64/lib/csum-copy.S
--- a/arch/x86_64/lib/csum-copy.S
+++ b/arch/x86_64/lib/csum-copy.S
@@ -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
-
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