drm/fbdev-dma: regression

[Nuno Gonçalves]

On Mon, Nov 11, 2024 at 1:22 PM Thomas Zimmermann <tzimmermann at suse.de> wrote:
> The patch in question changes the whole memory management of the
> affected code. It's also noteworthy that most of it has been reworked
> for the upcoming v6.12. Maybe this already fixed the problem. Kernel
> v6.11-rc7 added commit 5a498d4d06d6 ("drm/fbdev-dma: Only install
> deferred I/O if necessary"), which possibly fixes the problem as well.
>
> But there's no explicit fix for this problem and I have not seen any
> other related reports. Any further information is welcome.

Issue was present since 5ab91447aa13b8b98bc11f5326f33500b0ee2c48 and
tested until 6.12-rc3.
Is there any suggestion on how to dig down?

Thanks