linux-kernel - Re: [BUG] VAAPI encoder cause kernel panic if encoded video in 4K

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Message-ID: <e120f0a4-7600-c938-ac9f-cce6a714da4e@gmail.com>
Date:   Wed, 15 Sep 2021 13:47:15 +0200
From:   Christian König <ckoenig.leichtzumerken@...il.com>
To:     Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
        Christian König <christian.koenig@....com>
Cc:     Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>
Subject: Re: [BUG] VAAPI encoder cause kernel panic if encoded video in 4K



Am 15.09.21 um 12:36 schrieb Mikhail Gavrilov:
> On Wed, 15 Sept 2021 at 14:55, Christian König <christian.koenig@....com> wrote:
>> Yes, absolutely. You should see GPU resets and recovery in the system log after that.
> Unfortunately, not one DE will survive a GPU reset. All applications
> will terminate abnormally in fact this would be equivalent to reboot
> (and denial of service). :(

Yeah, very well known bug in the DEs.

The OpenGL robustness extension and Vulkan specification are pretty 
clear what drivers are supposed to do in such a situation, it's just not 
very well handled in userspace.

Regards,
Christian.