The patch titled
x86: fix csum_ipv6_magic asm memory clobber
has been added to the -mm tree. Its filename is
x86-fix-csum_ipv6_magic-asm-memory-clobber.patch
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Subject: x86: fix csum_ipv6_magic asm memory clobber
From: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Just like ip_fast_csum, the assembly snippet in csum_ipv6_magic needs a
memory clobber, as it is only passed the address of the buffer, not a
memory reference to the buffer itself.
Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/checksum_32.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/x86/include/asm/checksum_32.h~x86-fix-csum_ipv6_magic-asm-memory-clobber arch/x86/include/asm/checksum_32.h
--- a/arch/x86/include/asm/checksum_32.h~x86-fix-csum_ipv6_magic-asm-memory-clobber
+++ a/arch/x86/include/asm/checksum_32.h
@@ -161,7 +161,8 @@ static inline __sum16 csum_ipv6_magic(co
"adcl $0, %0 ;\n"
: "=&r" (sum)
: "r" (saddr), "r" (daddr),
- "r" (htonl(len)), "r" (htonl(proto)), "0" (sum));
+ "r" (htonl(len)), "r" (htonl(proto)), "0" (sum)
+ : "memory");
return csum_fold(sum);
}
_
Patches currently in -mm which might be from samuel.thibault@xxxxxxxxxxxx are
x86-fix-csum_ipv6_magic-asm-memory-clobber.patch
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