Messages in this thread | | | Date | Sat, 12 Feb 2022 08:37:55 -0800 | Subject | Re: [syzbot] possible deadlock in worker_thread | From | Bart Van Assche <> |
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On 2/11/22 21:31, Tetsuo Handa wrote: > But this report might be suggesting us that we should consider > deprecating (and eventually getting rid of) system-wide workqueues > (declared in include/linux/workqueue.h), for since flush_workqueue() > synchronously waits for completion, sharing system-wide workqueues > among multiple modules can generate unexpected locking dependency > chain (like this report).
I do not agree with deprecating system-wide workqueues. I think that all flush_workqueue(system_long_wq) calls should be reviewed since these are deadlock-prone.
Thanks,
Bart.
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