linux-kernel - Re: WARNING at drm_gem_object_handle_put

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Message-ID: <ba590f40-0ada-44b1-b51d-51cd452066dd@gmail.com>
Date: Mon, 14 Jul 2025 10:27:30 +0200
From: Jacek Łuczak <difrost.kernel@...il.com>
To: Thomas Zimmermann <tzimmermann@...e.de>,
 LKML <linux-kernel@...r.kernel.org>, christian.koenig@....com,
 Mario Limonciello <mario.limonciello@....com>
Subject: Re: WARNING at drm_gem_object_handle_put_unlocked+0xaa/0xe0

Hey Thomas,

On 7/14/25 9:08 AM, Thomas Zimmermann wrote:
> Hi
> 
> Am 12.07.25 um 12:05 schrieb Jacek Łuczak:
>> Hi,
>>
>>> While checking on this issue I've found[2] and applied the patch 
>>> posted by Thomes which fixed the issue.
>>>
>> After a longer use I find this is causing some weird graphics behavior 
>> notably an attempt to start Wayland session sometimes timeouts with no 
>> errors in the logs but e.g. reboot fails with attached errors (CC 
>> @Mario).
>>
>> If I'll find some time to bisect the original issue I'll report it back.
> 
> You might be seeing the same epoll error that Linus saw and that is 
> mentioned in the -rc6 announcement.

In meantime I've picked the latest drm set for rc6 and all works fine.

Cheers,
-Jacek


> 
> Best regards
> Thomas
> 
>>
>> Regards,
>> -jacek
>