linux-kernel - Re: [PATCH] drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector

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Message-ID: <CACO55tunC5mEu3Tw64rKLqNM6MN6d=N90kYQKYwXWNMB=ahDaw@mail.gmail.com>
Date:   Wed, 16 Aug 2023 23:27:05 +0200
From:   Karol Herbst <kherbst@...hat.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     linux-kernel@...r.kernel.org, Ben Skeggs <bskeggs@...hat.com>,
        Lyude Paul <lyude@...hat.com>, dri-devel@...ts.freedesktop.org,
        nouveau@...ts.freedesktop.org, Takashi Iwai <tiwai@...e.de>
Subject: Re: [PATCH] drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

On Wed, Aug 16, 2023 at 5:13 PM Borislav Petkov <bp@...en8.de> wrote:
>
> On Wed, Aug 16, 2023 at 04:57:28PM +0200, Karol Herbst wrote:
> > Do you have any connectors listed in "/sys/class/drm"?
>
> tree /sys/class/drm/
> /sys/class/drm/
> ├── card0 -> ../../devices/pci0000:00/0000:00:02.0/0000:03:00.0/drm/card0
> ├── renderD128 -> ../../devices/pci0000:00/0000:00:02.0/0000:03:00.0/drm/renderD128
> └── version
>
> > Also, mind sharing your vbios.rom file from
> > "/sys/kernel/debug/dri/0/vbios.rom"?
>
> Attached.

that GPU has only a `DMS-59` connector, is that right? I have such a
GPU myself, so maybe I can trigger that bug there, let's see..

>
> --
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette