Re: [bug-report] task info hung problem in fb_deferred_io_work()

[Harshit Mogalapalli]

Hi Takashi,
On 19/04/24 13:15, Takashi Iwai wrote:
> On Fri, 19 Apr 2024 09:39:09 +0200,
> > > Then later on, the commit 33cd6ea9c067 changed cancel_*() to
> > > flush_delayed_work() blindly, and the known problem resurfaced again.
> >
> > I have reverted that commit, but still could see some other task hung
> > message as shared here on other reply:
> >
> > https://lore.kernel.org/all/d2485cb9-277d-4b8e-9794-02f1efababc9@xxxxxxxxxx/
>
> Yes, then it could be a different cause, I suppose.
> The crash with flush_delayed_work() was a real crash, no hanging task,
> IIRC.
>
> Can you reproduce the issue with the latest Linus upstream, too?

Yes, this was reproduced on 6.9-rc4 kernel[1], also reverting that 
commit 33cd6ea9c067 on upstream still showed another issue[2].


[1]https://lore.kernel.org/all/271372d6-e665-4e7f-b088-dee5f4ab341a@xxxxxxxxxx/
[2] 
https://lore.kernel.org/all/d2485cb9-277d-4b8e-9794-02f1efababc9@xxxxxxxxxx/


Thanks,
Harshit

> thanks,
>
> Takashi