Hey Ryan,
If you still have a reliable test rig for the bug, would you try
running with you kernel compiled with the attached patch?
Jason
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index d8a2084b88db..3860c09d6ac1 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1454,6 +1454,9 @@ bool queue_work_on(int cpu, struct workqueue_struct *wq,
local_irq_save(flags);
+ /* Pair with the smp_wmb() in set_work_pool_and_clear_pending. */
+ smp_rmb();
+
if (!test_and_set_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))) {
__queue_work(cpu, wq, work);
ret = true;
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