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    Subject[PATCH,TRIVIAL] Fix csum_ipv6_magic asm memory clobber
    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@ens-lyon.org>
    Cc: stable@kernel.org

    diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h
    index 7c5ef8b..46fc474 100644
    --- a/arch/x86/include/asm/checksum_32.h
    +++ b/arch/x86/include/asm/checksum_32.h
    @@ -161,7 +161,8 @@ static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
    "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);
    }

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