linux-kernel - Re: [syzbot] [media?] WARNING in uvc_status

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Message-ID: <CANiDSCsMAiEPhDLx+1aSHUsuYrFrC0vGn9q76nYOGwX=1pGjwA@mail.gmail.com>
Date: Tue, 22 Oct 2024 10:41:48 +0200
From: Ricardo Ribalda <ribalda@...omium.org>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: syzbot <syzbot+9446d5e0d25571e6a212@...kaller.appspotmail.com>, 
	hverkuil-cisco@...all.nl, linux-kernel@...r.kernel.org, 
	linux-media@...r.kernel.org, mchehab@...nel.org, senozhatsky@...omium.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [media?] WARNING in uvc_status_unregister

Hi Laurent

On Sun, 20 Oct 2024 at 18:03, Laurent Pinchart
<laurent.pinchart@...asonboard.com> wrote:

> >     media: uvcvideo: Avoid race condition during unregister
>
> It looks like the issue comes from the fact that uvc_status_unregister()
> gets called from the error path in uvc_probe() through
> uvc_unregister_video(), likely for errors occuring before
> uvc_status_init() is called. uvc_status_unregister() should return
> immediately in that case. Ricardo, do you plan to look at that?
>
Just sent  https://lore.kernel.org/linux-media/20241022-race-unreg-v1-1-2212f364d9de@chromium.org/T/#u
to fix this issue

We probably want to queue:
https://lore.kernel.org/linux-media/20241022-order_status-v1-1-3904fafca340@chromium.org/T/#u
at the same time

But I am not sure if I should also mark the second patch as Fixes