net: add __rcu annotations to sk_wq and wq

Add proper RCU annotations/verbs to sk_wq and wq members

Fix __sctp_write_space() sk_sleep() abuse (and sock->wq access)

Fix sunrpc sk_sleep() abuse too

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 4 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 8e02550ff3e8..b53b2ebbb198 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -6102,15 +6102,16 @@ static void __sctp_write_space(struct sctp_association *asoc)
                         wake_up_interruptible(&asoc->wait);
 
                 if (sctp_writeable(sk)) {
-                        if (sk_sleep(sk) && waitqueue_active(sk_sleep(sk)))
-                                wake_up_interruptible(sk_sleep(sk));
+                        wait_queue_head_t *wq = sk_sleep(sk);
+
+                        if (wq && waitqueue_active(wq))
+                                wake_up_interruptible(wq);
 
                         /* Note that we try to include the Async I/O support
                          * here by modeling from the current TCP/UDP code.
                          * We have not tested with it yet.
                          */
-                        if (sock->wq->fasync_list &&
-                            !(sk->sk_shutdown & SEND_SHUTDOWN))
+                        if (!(sk->sk_shutdown & SEND_SHUTDOWN))
                                 sock_wake_async(sock,
                                                 SOCK_WAKE_SPACE, POLL_OUT);
                 }