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

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Commit e2d118a1cb ("net: inet: Support UID-based routing in IP
protocols.") made __build_flow_key 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: e2d118a1cb ("net: inet: Support UID-based routing in IP protocols.")
Reported-by: Erez Shitrit <erezsh@dev.mellanox.co.il>
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Lorenzo Colitti 2016-11-30 02:56:47 +09:00 • committed by David S. Miller

parent e95489010b

commit d109e61bfe

1 changed files with 2 additions and 1 deletions

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net/ipv4/route.c

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