diff options
| author | Dave Peterson <dsp@llnl.gov> | 2005-07-30 01:59:20 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-30 13:14:47 -0400 |
| commit | 92ed0223aefa795d1873427e25599cb70b2148ee (patch) | |
| tree | 1ecb618129bba703034bbb03223acbb977d55761 /arch/x86_64/lib | |
| parent | 5ce17b18e16177dd6409dabd38df5c2c9b58fc2d (diff) | |
[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 <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/lib')
| -rw-r--r-- | arch/x86_64/lib/csum-copy.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/lib/csum-copy.S b/arch/x86_64/lib/csum-copy.S index 01808ec37836..72fd55ee896e 100644 --- a/arch/x86_64/lib/csum-copy.S +++ b/arch/x86_64/lib/csum-copy.S | |||
| @@ -188,8 +188,8 @@ csum_partial_copy_generic: | |||
| 188 | source | 188 | source |
| 189 | movw (%rdi),%bx | 189 | movw (%rdi),%bx |
| 190 | adcl %ebx,%eax | 190 | adcl %ebx,%eax |
| 191 | dest | ||
| 192 | decl %ecx | 191 | decl %ecx |
| 192 | dest | ||
| 193 | movw %bx,(%rsi) | 193 | movw %bx,(%rsi) |
| 194 | leaq 2(%rdi),%rdi | 194 | leaq 2(%rdi),%rdi |
| 195 | leaq 2(%rsi),%rsi | 195 | leaq 2(%rsi),%rsi |