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-rw-r--r--sys/kern/subr_taskqueue.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/kern/subr_taskqueue.c b/sys/kern/subr_taskqueue.c
index 19a93ad6c694..28fbe3873564 100644
--- a/sys/kern/subr_taskqueue.c
+++ b/sys/kern/subr_taskqueue.c
@@ -94,6 +94,7 @@ taskqueue_free(struct taskqueue *queue)
{
mtx_lock(&queue->tq_mutex);
+ KASSERT(queue->tq_draining == 0, ("free'ing a draining taskqueue"));
queue->tq_draining = 1;
mtx_unlock(&queue->tq_mutex);