From: Vegard Nossum <vegard.nossum@gmail.com>
Date: Fri, 12 Sep 2008 23:17:43 +0000 (-0700)
Subject: tcp_ipv6: fix use of uninitialized memory
X-Git-Tag: v2.6.28-rc1~717^2~288
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78d15e82754945ee9821fb491b57faf43abfb9d7;p=pandora-kernel.git

tcp_ipv6: fix use of uninitialized memory

inet6_rsk() is called on a struct request_sock * before we
have checked whether the socket is an ipv6 socket or a ipv6-
mapped ipv4 socket. The access that triggers this is the
inet_rsk(rsk)->inet6_rsk_offset dereference in inet6_rsk().

This is arguably not a critical error as the inet6_rsk_offset
is only used to compute a pointer which is never really used
(in the code path in question) anyway. But it might be a
latent error, so let's fix it.

Spotted by kmemcheck.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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