Eric Dumazet 2ca4f6ca45 rxrpc: use rcu protection while reading sk->sk_user_data
We need to extend the rcu_read_lock() section in rxrpc_error_report()
and use rcu_dereference_sk_user_data() instead of plain access
to sk->sk_user_data to make sure all rules are respected.

The compiler wont reload sk->sk_user_data at will, and RCU rules
prevent memory beeing freed too soon.

Fixes: f0308fb07080 ("rxrpc: Fix possible NULL pointer access in ICMP handling")
Fixes: 17926a79320a ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-16 12:20:17 -07:00
..
2019-09-05 00:24:58 +02:00
2019-10-07 11:05:05 +01:00
2019-07-08 19:36:47 -07:00
2019-10-07 11:05:05 +01:00