linux-kernel - Re: nouveau 0000:01:00.0: drm_WARN_ON(!found

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Message-ID: <20231213113936.GBZXmX+MKqX/qOnPn1@fat_crate.local>
Date:   Wed, 13 Dec 2023 12:39:36 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Paul Dufresne <dufresnep@...o.com>, Lyude Paul <lyude@...hat.com>,
        Danilo Krummrich <me@...r.org>
Cc:     nouveau <nouveau@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        Daniel Vetter <daniel@...ll.ch>
Subject: Re: nouveau 0000:01:00.0: drm_WARN_ON(!found_head)

On Tue, Dec 12, 2023 at 10:35:51PM -0500, Paul Dufresne wrote:
> https://gitlab.freedesktop.org/drm/nouveau/-/issues/282

Let's add more folks who were involved in

1b477f42285e ("drm/nouveau/kms: Add INHERIT ioctl to nvkm/nvif for reading IOR state")

Apparently, someone wants to know that the loop over the crtcs in
nv50_display_read_hw_or_state() didn't find a head.

Holler if you need me to run a debug patch to figure out why.

We're getting close to releasing so I guess we either debug this or shut
up the WARN.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette