Commit 42b531de authored by Parthasarathy Bhuvaragan's avatar Parthasarathy Bhuvaragan Committed by David S. Miller
Browse files

tipc: Fix missing connection request handling

In filter_connect, we use waitqueue_active() to check for any
connections to wakeup. But waitqueue_active() is missing memory
barriers while accessing the critical sections, leading to
inconsistent results.

In this commit, we replace this with an SMP safe wq_has_sleeper()
using the generic socket callback sk_data_ready().
Signed-off-by: default avatarParthasarathy Bhuvaragan <>
Reviewed-by: default avatarJon Maloy <>
Signed-off-by: default avatarDavid S. Miller <>
parent f8324608
......@@ -1581,8 +1581,7 @@ static bool filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
return true;
/* If empty 'ACK-' message, wake up sleeping connect() */
if (waitqueue_active(sk_sleep(sk)))
/* 'ACK-' message is neither accepted nor rejected: */
msg_set_dest_droppable(hdr, 1);
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment