ipv6: Fix OOPS in ip6_dst_lookup_tail().
commite550dfb0c2c31b6363aa463a035fc9f8dcaa3c9b
authorNeil Horman <nhorman@tuxdriver.com>
Tue, 9 Sep 2008 20:51:35 +0000 (9 13:51 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 9 Sep 2008 20:51:35 +0000 (9 13:51 -0700)
tree66f11aed70a892a3768d3e0f5100cd4c1c7b6b1e
parent225f40055f779032974a9fce7b2f9c9eda04ff58
ipv6: Fix OOPS in ip6_dst_lookup_tail().

This fixes kernel bugzilla 11469: "TUN with 1024 neighbours:
ip6_dst_lookup_tail NULL crash"

dst->neighbour is not necessarily hooked up at this point
in the processing path, so blindly dereferencing it is
the wrong thing to do.  This NULL check exists in other
similar paths and this case was just an oversight.

Also fix the completely wrong and confusing indentation
here while we're at it.

Based upon a patch by Evgeniy Polyakov.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/ip6_output.c