From: Eric W. Biederman <ebiederm@xmission.com>
Date: Wed, 1 Feb 2006 01:51:44 +0000 (-0800)
Subject: [IPV6] tcp_v6_send_synack: release the destination
X-Git-Tag: v2.6.16-rc2~175^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78b910429e2c037533d2a7bd9e95b4f94f905ef8;p=pandora-kernel.git

[IPV6] tcp_v6_send_synack: release the destination

This patch fix dst reference counting in tcp_v6_send_synack

Analysis:
Currently tcp_v6_send_synack is never called with a dst entry
so dst always comes in as NULL.

ip6_dst_lookup calls ip6_route_output which calls dst_hold
before it returns the dst entry.   Neither xfrm_lookup
nor tcp_make_synack consume the dst entry so we still have
a dst_entry with a bumped refrence count at the end of
this function.

Therefore we need to call dst_release just before we return
just like tcp_v4_send_synack does.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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