Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [syzbot] WARNING in call_timer_fn | Date | Thu, 17 Nov 2022 17:06:48 +0100 |
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On Thu, Nov 17 2022 at 20:55, Hillf Danton wrote: > On 17 Nov 2022 12:54:28 +0100 Thomas Gleixner <tglx@linutronix.de> >> >> The work has been canceled already before in the same function and there >> are some more delayed works which can trigger this. >> >> So no, this whole close_sync() function is prone to teardown races and >> just slapping a single cancel here without deeper analysis does not cut >> it. > > Agree. > > A set of sync cancelations can do the job, given what is defined in struct > hci_dev wrt workqueue.
It's only part of the solution because you also have to prevent that work is queued from other parts of the code....
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