Re: [PATCH] usb: gadget: dummy_hcd: execute hrtimer callback in softirq context

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On Mon, Jul 29, 2024 at 10:26 AM Marcello Sylvester Bauer <sylv@xxxxxxx> wrote:
>
> Hi Andrey,

Hi Marcello,

> Thanks for investigating and finding the cause of this problem. I have
> already submitted an identical patch to change the hrtimer to softirq:
> https://lkml.org/lkml/2024/6/26/969

Ah, I missed that, that's great!

> However, your commit messages contain more useful information about the
> problem at hand. So I'm happy to drop my patch in favor of yours.

That's very considerate, thank you. I'll leave this up to Greg - I
don't mind using either patch.

> Btw, the same problem has also been reported by the intel kernel test
> robot. So we should add additional tags to mark this patch as the fix.
>
>
> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
> Closes:
> https://lore.kernel.org/oe-lkp/202406141323.413a90d2-lkp@xxxxxxxxx
> Acked-by: Marcello Sylvester Bauer <sylv@xxxxxxx>

Let's also add the syzbot reports mentioned in your patch:

Reported-by: syzbot+c793a7eca38803212c61@xxxxxxxxxxxxxxxxxxxxxxxxx
Closes: https://syzkaller.appspot.com/bug?extid=c793a7eca38803212c61
Reported-by: syzbot+1e6e0b916b211bee1bd6@xxxxxxxxxxxxxxxxxxxxxxxxx
Closes: https://syzkaller.appspot.com/bug?extid=1e6e0b916b211bee1bd6

And I also found one more:

Reported-by: syzbot+edd9fe0d3a65b14588d5@xxxxxxxxxxxxxxxxxxxxxxxxx
Closes: https://syzkaller.appspot.com/bug?extid=edd9fe0d3a65b14588d5

Thank you!





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