linux-kernel - Re: [PATCH] drm/gud: fix NULL fb and crtc dereferences on USB disconnect

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Message-ID: <69a714228f562d399e78cd0e54a23769490336f9.camel@aol.com>
Date: Tue, 13 Jan 2026 14:05:35 +0000
From: Ruben Wauters <rubenru09@....com>
To: Shenghao Yang <me@...nghaoyang.info>, Thomas Zimmermann	
 <tzimmermann@...e.de>, Maarten Lankhorst
 <maarten.lankhorst@...ux.intel.com>,  Maxime Ripard <mripard@...nel.org>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	stable@...r.kernel.org
Subject: Re: [PATCH] drm/gud: fix NULL fb and crtc dereferences on USB
 disconnect

On Thu, 2026-01-08 at 21:39 +0800, Shenghao Yang wrote
Hi
> Hi Ruben, Thomas,
> 
> On 7/1/26 23:56, Thomas Zimmermann wrote:
> 
> > 
> > No worries, DRM semantics can be murky. This is one of the cases that is impossible to know unless you came across a patch like this one.
> > 
> > Best regards
> > Thomas
> > 
> > > > I think the patch is fine and IIRC we have similar logic in other drivers.
> > > Reviewed-by: Ruben Wauters <rubenru09@....com>

Patch applied to drm-misc-fixes, thanks
> > > 
> > > I believe Shenghao mentioned another oops that is present? if so it may
> > > be best to submit that in a separate patch rather than a v2 of this
> > > one.
> > > 
> > > Ruben
> 
> 
> Thanks both! I'll split the patch for the second oops.
> 
> Shenghao

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