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-rw-r--r--net/rxrpc/ar-ack.c3
-rw-r--r--net/rxrpc/ar-call.c6
2 files changed, 5 insertions, 4 deletions
diff --git a/net/rxrpc/ar-ack.c b/net/rxrpc/ar-ack.c
index 2714da167fb..b6ffe4e1b84 100644
--- a/net/rxrpc/ar-ack.c
+++ b/net/rxrpc/ar-ack.c
@@ -245,6 +245,9 @@ static void rxrpc_resend_timer(struct rxrpc_call *call)
_enter("%d,%d,%d",
call->acks_tail, call->acks_unacked, call->acks_head);
+ if (call->state >= RXRPC_CALL_COMPLETE)
+ return;
+
resend = 0;
resend_at = 0;
diff --git a/net/rxrpc/ar-call.c b/net/rxrpc/ar-call.c
index 909d092de9f..bf656c230ba 100644
--- a/net/rxrpc/ar-call.c
+++ b/net/rxrpc/ar-call.c
@@ -786,6 +786,7 @@ static void rxrpc_call_life_expired(unsigned long _call)
/*
* handle resend timer expiry
+ * - may not take call->state_lock as this can deadlock against del_timer_sync()
*/
static void rxrpc_resend_time_expired(unsigned long _call)
{
@@ -796,12 +797,9 @@ static void rxrpc_resend_time_expired(unsigned long _call)
if (call->state >= RXRPC_CALL_COMPLETE)
return;
- read_lock_bh(&call->state_lock);
clear_bit(RXRPC_CALL_RUN_RTIMER, &call->flags);
- if (call->state < RXRPC_CALL_COMPLETE &&
- !test_and_set_bit(RXRPC_CALL_RESEND_TIMER, &call->events))
+ if (!test_and_set_bit(RXRPC_CALL_RESEND_TIMER, &call->events))
rxrpc_queue_call(call);
- read_unlock_bh(&call->state_lock);
}
/*