| commit | c1c477217882c610a2ba0268f5faf36c9c092528 | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <edumazet@google.com> | Tue Apr 23 09:43:26 2019 -0700 |
| committer | David S. Miller <davem@davemloft.net> | Fri Apr 26 11:18:23 2019 -0400 |
| tree | 13627eea67bb686b9ad6742fb66c1ce0615f2211 | |
| parent | ad759c906954aab1bab8b5fe04931e566d901a0e [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>