tree 99477f48a607f4825a46f987a5f26c40b3041444
parent 551cde192343a10c8fbd57c4cc8f0c4b6cd307e4
author Lorenzo Colitti <lorenzo@google.com> 1482420837 +0900
committer David S. Miller <davem@davemloft.net> 1482423310 -0500

net: ipv4: Don't crash if passing a null sk to ip_do_redirect.

Commit e2d118a1cb5e ("net: inet: Support UID-based routing in IP
protocols.") made ip_do_redirect call sock_net(sk) to determine
the network namespace of the passed-in socket. This crashes if sk
is NULL.

Fix this by getting the network namespace from the skb instead.

Fixes: e2d118a1cb5e ("net: inet: Support UID-based routing in IP protocols.")
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>