tree b2b5ec39519bbf6416ae021f108739290e565b50
parent d232b8dded624af3e346b13807a591c63b601c44
author Hans Schillstrom <hans.schillstrom@ericsson.com> 1307948817 +0200
committer Simon Horman <horms@verge.net.au> 1307954507 +0900

IPVS netns exit causes crash in conntrack

Quote from Patric Mc Hardy
"This looks like nfnetlink.c excited and destroyed the nfnl socket, but
ip_vs was still holding a reference to a conntrack. When the conntrack
got destroyed it created a ctnetlink event, causing an oops in
netlink_has_listeners when trying to use the destroyed nfnetlink
socket."

If nf_conntrack_netlink is loaded before ip_vs this is not a problem.

This patch simply avoids calling ip_vs_conn_drop_conntrack()
when netns is dying as suggested by Julian.

Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Simon Horman <horms@verge.net.au>