From: David Howells dhowells@redhat.com
[ Upstream commit d3d863036d688313f8d566b87acd7d99daf82749 ]
If the local processor work item for the rxrpc local endpoint gets requeued by an event (such as an incoming packet) between it getting scheduled for destruction and the UDP socket being closed, the rxrpc_local_destroyer() function can get run twice. The second time it can hang because it can end up waiting for cleanup events that will never happen.
Signed-off-by: David Howells dhowells@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/rxrpc/local_object.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c index 96ecb7356c0fe..790c270c06785 100644 --- a/net/rxrpc/local_object.c +++ b/net/rxrpc/local_object.c @@ -405,6 +405,9 @@ static void rxrpc_local_processor(struct work_struct *work) container_of(work, struct rxrpc_local, processor); bool again;
+ if (local->dead) + return; + trace_rxrpc_local(local->debug_id, rxrpc_local_processing, refcount_read(&local->ref), NULL);