get_work_pwq() is possible to return NULL, add a check point for that in
the context inside pwq_activate_delayed_work().
CC: Tejun Heo <t...@kernel.org>
Signed-off-by: Michael Wang <wang...@linux.vnet.ibm.com>
---
kernel/workqueue.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index ee8e29a..ea2ec38 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1072,6 +1072,7 @@ static void put_pwq_unlocked(struct pool_workqueue *pwq)
static void pwq_activate_delayed_work(struct work_struct *work)
{
struct pool_workqueue *pwq = get_work_pwq(work);
+ BUG_ON(!pwq);
trace_workqueue_activate_work(work);
move_linked_works(work, &pwq->pool->worklist, NULL);
--
1.7.4.1
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