Hi Takashi,
On 19/04/24 13:15, Takashi Iwai wrote:

On Fri, 19 Apr 2024 09:39:09 +0200,

quoted

quoted

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@oracle.com/ (local)

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@oracle.com/ (local)
[2] 
https://lore.kernel.org/all/d2485cb9-277d-4b8e-9794-02f1efababc9@oracle.com/ (local)


Thanks,
Harshit

thanks,

Takashi