linux-kernel - Re: [PATCH v2] media: dvb_demux: fix potential TOCTOU race conditions

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Message-ID: <2026012031-frostlike-humming-b221@gregkh>
Date: Tue, 20 Jan 2026 14:20:37 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Markus Elfring <Markus.Elfring@....de>
Cc: Gui-Dong Han <hanguidong02@...il.com>, linux-media@...r.kernel.org,
	stable@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Jia-Ju Bai <baijiaju1990@...il.com>,
	Hans Verkuil <hverkuil+cisco@...nel.org>,
	Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: Re: [PATCH v2] media: dvb_demux: fix potential TOCTOU race conditions

On Tue, Jan 20, 2026 at 01:38:33PM +0100, Markus Elfring wrote:
> …
> > Fix this by extending the lock scope.
> …
> 
> How do you think about to increase the application of scope-based resource management?
> https://elixir.bootlin.com/linux/v6.19-rc5/source/include/linux/mutex.h#L253
> 
> 
> > This possible bug was found by our experimental static analysis tool,
> > which analyzes lock usage to detect TOCTOU issues.
> 
> * Do you refer to any other source code analysis approach than LR-Miner?
> 
> * Will any additional background information become more helpful here?
> 
> 
> Regards,
> Markus
> 

Hi,

This is the semi-friendly patch-bot of Greg Kroah-Hartman.

Markus, you seem to have sent a nonsensical or otherwise pointless
review comment to a patch submission on a Linux kernel developer mailing
list.  I strongly suggest that you not do this anymore.  Please do not
bother developers who are actively working to produce patches and
features with comments that, in the end, are a waste of time.

Patch submitter, please ignore Markus's suggestion; you do not need to
follow it at all.  The person/bot/AI that sent it is being ignored by
almost all Linux kernel maintainers for having a persistent pattern of
behavior of producing distracting and pointless commentary, and
inability to adapt to feedback.  Please feel free to also ignore emails
from them.

thanks,

greg k-h's patch email bot