tree 81fa8933b6769983063db89da3242aabbf816135
parent 4eaa0e3c869acd5dbc7c2e3818a9ae9cbf221d27
author Eric Dumazet <eric.dumazet@gmail.com> 1271020697 +0000
committer David S. Miller <davem@davemloft.net> 1271320031 -0700

net: dev_pick_tx() fix

When dev_pick_tx() caches tx queue_index on a socket, we must check
socket dst_entry matches skb one, or risk a crash later, as reported by
Denys Fedorysychenko, if old packets are in flight during a route
change, involving devices with different number of queues.

Bug introduced by commit a4ee3ce3
(net: Use sk_tx_queue_mapping for connected sockets)

Reported-by: Denys Fedorysychenko <nuclearcat@nuclearcat.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>