Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: Possible race in dev_coredumpm()-del_timer() path | Date | Thu, 14 Apr 2022 13:31:49 +0200 |
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On Thu, Apr 14 2022 at 16:50, Mukesh Ojha wrote: > On Thu, Apr 14, 2022 at 12:38:13PM +0200, Thomas Gleixner wrote: >> So, yes this needs serialization of some sort. > > Thanks for understanding the problem. > Can the patch mentioned at below link helps with the first problem ? > > https://lore.kernel.org/lkml/57a04278-0a60-cc7d-7ce8-a75c2befd568@quicinc.com/
Something like that.
>> Same problem vs. disabled_store(). > > you mean, while userspace is reading the data and suddenly disable_store() done from > sysfs.
No, that's not a problem because the reader holds a reference, but it's the same problem vs. initialization:
device_add() disable_store() devcd_free() mod_delayed_work() .... Thanks,
tglx
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