[IPV6] tcp_v6_send_synack: release the destination
authorEric W. Biederman <ebiederm@xmission.com>
Wed, 1 Feb 2006 01:51:44 +0000 (17:51 -0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 1 Feb 2006 01:51:44 +0000 (17:51 -0800)
commit78b910429e2c037533d2a7bd9e95b4f94f905ef8
tree39d48ffb6b297ceae30a577f198b3de785785a68
parentf9d9516db71eb3a8547948cdddc139eb1c1b9aee
[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>
net/ipv6/tcp_ipv6.c