On Wed 2020-10-14 15:50:48, Zqiang wrote: > There is a small race window when a delayed work is being canceled and > the work still might be queued from the timer_fn: > > CPU0 CPU1 > kthread_cancel_delayed_work_sync() > __kthread_cancel_work_sync() > __kthread_cancel_work() > work->canceling++; > kthread_delayed_work_timer_fn() > kthread_insert_work(); > > BUG: kthread_insert_work() should not get called when work->canceling > is set. > > Cc: <stable@xxxxxxxxxxxxxxx> > Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> > Acked-by: Tejun Heo <tj@xxxxxxxxxx> > Signed-off-by: Zqiang <qiang.zhang@xxxxxxxxxxxxx> Andrew, are you going to take this patch with -mm tree, please? I think that you usually take the changes in kthread.c. Best Regards, Petr
