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authorDave Peterson <dsp@llnl.gov>2005-07-29 22:59:20 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-30 10:14:47 -0700
commit92ed0223aefa795d1873427e25599cb70b2148ee (patch)
tree1ecb618129bba703034bbb03223acbb977d55761 /arch/x86_64/lib
parent5ce17b18e16177dd6409dabd38df5c2c9b58fc2d (diff)
downloadlinux-linaro-stable-92ed0223aefa795d1873427e25599cb70b2148ee.tar.gz
[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.S2
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:
source
movw (%rdi),%bx
adcl %ebx,%eax
- dest
decl %ecx
+ dest
movw %bx,(%rsi)
leaq 2(%rdi),%rdi
leaq 2(%rsi),%rsi