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Merge pull request #18289 from nmeum/pr/emcute_deadlock_suback

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asymcute: Fix deadlocks in REGACK, SUBACK and UNSUBACK handler
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Martine Lenders 2022-07-01 17:11:13 +02:00 committed by GitHub
commit 932c58d89f
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1 changed files with 3 additions and 0 deletions
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3
sys/net/application_layer/asymcute/asymcute.c
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@ -415,6 +415,7 @@ static void _on_regack(asymcute_con_t *con, const uint8_t *data, size_t len)
/* finish the registration by applying the topic id */
asymcute_topic_t *topic = req->arg;
if (topic == NULL) {
mutex_unlock(&con->lock);
return;
}
@ -497,6 +498,7 @@ static void _on_suback(asymcute_con_t *con, const uint8_t *data, size_t len)
/* parse and apply assigned topic id */
asymcute_sub_t *sub = req->arg;
if (sub == NULL) {
mutex_unlock(&con->lock);
return;
}
@ -534,6 +536,7 @@ static void _on_unsuback(asymcute_con_t *con, const uint8_t *data, size_t len)
/* remove subscription from list */
asymcute_sub_t *sub = req->arg;
if (sub == NULL) {
mutex_unlock(&con->lock);
return;
} else if (con->subscriptions == sub) {
con->subscriptions = sub->next;