linux-kernel - Re: BUG: KASAN: null-ptr-deref in drm_sched_job_cleanup+0x96/0x290 [gpu

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Message-ID: <d96519fb-9e12-5a81-a60b-384dcb286f28@gmail.com>
Date:   Wed, 19 Apr 2023 15:15:13 +0200
From:   Christian König <ckoenig.leichtzumerken@...il.com>
To:     Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
Cc:     amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Christian König <Christian.Koenig@....com>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: Re: BUG: KASAN: null-ptr-deref in drm_sched_job_cleanup+0x96/0x290
 [gpu_sched]

Am 19.04.23 um 15:13 schrieb Mikhail Gavrilov:
> On Wed, Apr 19, 2023 at 1:12 PM Christian König
> <ckoenig.leichtzumerken@...il.com> wrote:
>> I'm already looking into this, but can't figure out why we run into
>> problems here.
>>
>> What happens is that a CS is aborted without sending the job to the
>> scheduler and in this case the cleanup function doesn't seem to work.
>>
>> Christian.
> I can easily reproduce it on any AMD GPU hardware.

Well exactly that's the problem, I can't reproduce it.

Have you applied any local change or config which could explain that?

Christian.

> You can add more logs to debug and I return with new logs which explains this.
> Thanks.
>