Re: Kernel panic in xe_display_flush_cleanup_work (NULL pointer dereference Alder Lake + Arc A370M)

[Jani Nikula <jani.nikula@linux.intel.com>]

On Fri, 15 May 2026, Jani Nikula <jani.nikula@linux.intel.com> wrote:
> On Wed, 13 May 2026, reconicreferenssse <reconicpreferensse@proton.me> wrote:
>> I am reporting a fatal NULL pointer dereference (address:
>> 00000000000005d8) in the 'xe' driver. This is a critical boot-blocker
>> on hybrid Alder Lake-P + DG2 platforms, causing a Kernel Panic during
>> early KMS initialization (initramfs) before the LUKS password prompt.
>
> ...
>
>> Steps to Reproduce:
>> 1. Boot with: xe.force_probe=46a6,5693 i915.force_probe=!46a6,!5693
>
> The xe driver does not properly support ADL-P or DG2. As you know, since
> you're forcing the probe, and it taints the kernel.
>
> We might have a look if this is generic and unrelated to the platform,
> but otherwise you should use the i915 driver with ADL-P and DG2.

Yeah, I think this one's unrelated to the platform. See [1].

Reporting the i915 specific issues you mentioned would still be
appreciated.

And for anyone else wondering, the mentioned but unreferenced gitlab
issue is likely [2].


BR,
Jani.


[1] https://lore.kernel.org/r/20260515160920.1082842-1-jani.nikula@intel.com
[2] https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7904


-- 
Jani Nikula, Intel