tree 62aa121cd62e416a505d35de9b5d77ab8ae89f66
parent a1d7c1b4b8dfbc5ecadcff9284d64bb6ad4c0196
author Joerg Marx <joerg.marx@secunet.com> 1274363730 +0200
committer Patrick McHardy <kaber@trash.net> 1274363730 +0200

netfilter: nf_conntrack: fix a race in __nf_conntrack_confirm against nf_ct_get_next_corpse()

This race was triggered by a 'conntrack -F' command running in parallel
to the insertion of a hash for a new connection. Losing this race led to
a dead conntrack entry effectively blocking traffic for a particular
connection until timeout or flushing the conntrack hashes again.
Now the check for an already dying connection is done inside the lock.

Signed-off-by: Joerg Marx <joerg.marx@secunet.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>