tree 95b2d47e55db3991f66090525b7e28455a6ca39b
parent 468ec44bd5a863736d955f78b8c38896f26864a1
author Patrick McHardy <kaber@trash.net> 1164764125 +0100
committer David S. Miller <davem@sunset.davemloft.net> 1165123882 -0800

[NETFILTER]: ip_conntrack: fix NAT helper unload races

The NAT helpr hooks are protected by RCU, but all of the
conntrack helpers test and use the global pointers instead
of copying them first using rcu_dereference()

Also replace synchronize_net() by synchronize_rcu() for clarity
since sychronizing only with packet receive processing is
insufficient to prevent races.

Signed-off-by: Patrick McHardy <kaber@trash.net>