[dm-devel] dm-crypt with no_read_workqueue and no_write_workqueue + btrfs scrub = BUG()

Maciej S. Szmigiero mail at maciej.szmigiero.name
Wed Dec 23 21:19:41 UTC 2020


On 23.12.2020 22:09, Ignat Korchagin wrote:
(..)
> I've been looking into this for the last couple of days because of
> other reports [1].
> Just finished testing a possible solution. Will submit soon.

Thanks for looking into it.

By the way, on a bare metal I am actually hitting a different problem
(scheduling while atomic) when scrubbing a btrfs filesystem, just as one
of your users from that GitHub report had [1].

I've pasted that backtrace in my original Dec 14 message.

Thanks,
Maciej

[1]: https://github.com/cloudflare/linux/issues/1#issuecomment-736734243




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