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-rw-r--r--kernel/workqueue.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 801a698564d4..1b2e36b2f31f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4555,6 +4555,17 @@ static void rebind_workers(struct worker_pool *pool)
pool->attrs->cpumask) < 0);
spin_lock_irq(&pool->lock);
+
+ /*
+ * XXX: CPU hotplug notifiers are weird and can call DOWN_FAILED
+ * w/o preceding DOWN_PREPARE. Work around it. CPU hotplug is
+ * being reworked and this can go away in time.
+ */
+ if (!(pool->flags & POOL_DISASSOCIATED)) {
+ spin_unlock_irq(&pool->lock);
+ return;
+ }
+
pool->flags &= ~POOL_DISASSOCIATED;
for_each_pool_worker(worker, pool) {