projects / openwrt / staging / blogic.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: ad759c9) | patch
l2tp: use rcu_dereference_sk_user_data() in l2tp_udp_encap_recv()
authorEric Dumazet <edumazet@google.com>
Tue, 23 Apr 2019 16:43:26 +0000 (09:43 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 26 Apr 2019 15:18:23 +0000 (11:18 -0400)
commitc1c477217882c610a2ba0268f5faf36c9c092528
tree13627eea67bb686b9ad6742fb66c1ce0615f2211tree | snapshot
parentad759c906954aab1bab8b5fe04931e566d901a0ecommit | diff
l2tp: use rcu_dereference_sk_user_data() in l2tp_udp_encap_recv()

Canonical way to fetch sk_user_data from an encap_rcv() handler called
from UDP stack in rcu protected section is to use rcu_dereference_sk_user_data(),
otherwise compiler might read it multiple times.

Fixes: d00fa9adc528 ("il2tp: fix races with tunnel socket close")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/l2tp/l2tp_core.c diff | blob | history
John Crispins staging tree