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

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Message-ID: <CACO55tuWTYngfw+MZnan+U4eYyE+SvOWgxzffaCMNGQgriq3ig@mail.gmail.com>
Date:   Thu, 17 Aug 2023 12:00:47 +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 Thu, Aug 17, 2023 at 11:58 AM Karol Herbst <kherbst@...hat.com> wrote:
>
> On Thu, Aug 17, 2023 at 10:10 AM Borislav Petkov <bp@...en8.de> wrote:
> >
> > On Thu, Aug 17, 2023 at 01:18:12AM +0200, Karol Herbst wrote:
> > > do you have one of these? https://en.wikipedia.org/wiki/DMS-59
> >
> > Ah, DMS == Dual Monitor Solution :-)
> >
> > Yap, that's exactly what the GPU has. And the Y-cable is 2xDVI. It is
> > a Dell workstation and it came this way, meaning I haven't done any
> > changes there.
> >
> > Thx.
>
> right.. seems like on my GPU with such a connector I'm not seeing any
> issues... let me dig further into the vbios and see if I can figure
> something out there.
>

btw, what would help is to know where `nvkm_uconn_uevent` actually
fails, or rather, are you running into this "/* TODO: support DP IRQ
on ANX9805 and remove this hack. */" condition?

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