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rxrpc: Fix local destruction being repeated

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[ Upstream commit d3d863036d ]

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>
This commit is contained in:
David Howells 2022-05-06 23:55:21 +01:00 • committed by Justin Hammond
parent 3aa83f3498
commit b22ef2cdfe
1 changed files with 3 additions and 0 deletions
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3
net/rxrpc/local_object.c
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@ -406,6 +406,9 @@ 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,
atomic_read(&local->usage), NULL);