From: Helge Deller <deller@gmx•de>
To: "V, Narasimhan" <Narasimhan.V@amd•com>
Cc: Linux Next Mailing List <linux-next@vger•kernel.org>,
Daniel Vetter <daniel@ffwll•ch>,
"linux-fbdev@vger•kernel.org" <linux-fbdev@vger•kernel.org>,
"dri-devel@lists•freedesktop.org"
<dri-devel@lists•freedesktop.org>,
open list <linux-kernel@vger•kernel.org>,
"linux@weissschuh•net" <linux@weissschuh•net>,
Borislav Petkov <bp@alien8•de>,
Thomas Zimmermann <tzimmermann@suse•de>
Subject: Re: WARNING: CPU: 0 PID: 8 at drivers/video/fbdev/core/fbmem.c:467 unregister_framebuffer+0x45/0x160
Date: Tue, 3 Sep 2024 11:57:31 +0200 [thread overview]
Message-ID: <daa67bb0-96a4-4319-8c39-7b43f2135e27@gmx.de> (raw)
In-Reply-To: <DM4PR12MB50864B3F2396760358F2955589932@DM4PR12MB5086.namprd12.prod.outlook.com>
On 9/3/24 11:56, V, Narasimhan wrote:
> [AMD Official Use Only - AMD Internal Distribution Only]
>
> Hi,
>
>
> ________________________________________
> From: Helge Deller <deller@gmx•de>
> Sent: Tuesday, September 3, 2024 01:48 AM
> To: V, Narasimhan; Thomas Zimmermann
> Cc: Linux Next Mailing List; Daniel Vetter; linux-fbdev@vger•kernel.org; dri-devel@lists•freedesktop.org; open list; linux@weissschuh•net; Borislav Petkov
> Subject: Re: WARNING: CPU: 0 PID: 8 at drivers/video/fbdev/core/fbmem.c:467 unregister_framebuffer+0x45/0x160
>
>> On 9/2/24 20:56, V, Narasimhan wrote:
>>> From: Thomas Zimmermann <tzimmermann@suse•de>
>>>>>> Seeing the following warning and bug on boot with linux-next-20240829
>>>>>>
>>>>>> WARNING: CPU: 0 PID: 8 at drivers/video/fbdev/core/fbmem.c:467 unregister_framebuffer+0x45/0x160
>>>>>> BUG: kernel NULL pointer dereference, address: 0000000000000000
>>>
>>>> Does it work if you revert one of these commits?
>>>
>>>> c2fe0480cd77 ("fbdev/efifb: Use devm_register_framebuffer()")
>>>
>>>
>>> Reverting this commit fixes the issue.
>
>> Good.
>
>>>> For the latter, there might be a fix at
>>>
>>>> https://patchwork.freedesktop.org/patch/611902/?series=138008&rev=1
>
>> Current fbdev git tree and for-next series have this newer patch already.
>> I expect that the issue is already resolved with there, but it would
>> be good if you could test.
>
>> Helge
>
> The patch seems to be already into linux-next tree and the issue is no more seen with today's linux-next build.
Great.
Thanks for testing!
Helge
prev parent reply other threads:[~2024-09-03 9:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-01 15:01 BUG: kernel NULL pointer dereference, address: 0000000000000000 on boot with linux-next-20240829 V, Narasimhan
2024-09-02 8:45 ` WARNING: CPU: 0 PID: 8 at drivers/video/fbdev/core/fbmem.c:467 unregister_framebuffer+0x45/0x160 (was: Re: BUG: kernel NULL pointer dereference, address: 0000000000000000 on boot with linux-next-20240829) Borislav Petkov
2024-09-02 11:41 ` WARNING: CPU: 0 PID: 8 at drivers/video/fbdev/core/fbmem.c:467 unregister_framebuffer+0x45/0x160 Thomas Zimmermann
2024-09-02 18:56 ` V, Narasimhan
2024-09-02 20:18 ` Helge Deller
2024-09-03 9:56 ` V, Narasimhan
2024-09-03 9:57 ` Helge Deller [this message]
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