From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 25206CD4F25 for ; Fri, 15 May 2026 16:20:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B27DF10E377; Fri, 15 May 2026 16:20:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="GG8HHw73"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id C763C10E377 for ; Fri, 15 May 2026 16:20:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778862020; x=1810398020; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=kNZZo2RDqXIo/RY+I1f7cA03vvW60+yS/qMH/VDNF8Y=; b=GG8HHw73OcrhRzfaulMF2j2avDVhxANw1NwEXir//YxaMJw/iIiQdt+B 8jc62g8c3B5MeYqWvTCPOarx7vgZ3XsH/jpeQJDR7YLA/bf+mdGamyRvq PsfbGLh4NdyDWwZYMUAyurysQX9uRc2OGrE/UoAtZIQkC0iibqknsHiiz Dwa6PehHkbUmnt26cXuCKf1sALMZRB4ghK4IjWIk6dodKIddiZU7awZOB Jn08RYwC22URu/ra0AhLCEE6UdDDshtv0VbF0QL0OWZPjVzhXUp2+UD7Q 2wELL/3my+Xo8+RlZdl9yLeKUfgZm/ut54xENLh0goO1g0D2PwPM2PtqT Q==; X-CSE-ConnectionGUID: Ksaw+br3Qx2JF5tPcMDE7Q== X-CSE-MsgGUID: 8Q4/lGbATQSEc97KNxy7PA== X-IronPort-AV: E=McAfee;i="6800,10657,11787"; a="79784486" X-IronPort-AV: E=Sophos;i="6.23,236,1770624000"; d="scan'208";a="79784486" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 May 2026 09:20:20 -0700 X-CSE-ConnectionGUID: TEvnPB3cTI2yeRD28tMS3Q== X-CSE-MsgGUID: GSyeNQUcSRqv65Yrc3433g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,236,1770624000"; d="scan'208";a="238854489" Received: from pgcooper-mobl3.ger.corp.intel.com (HELO localhost) ([10.245.245.71]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 May 2026 09:20:18 -0700 From: Jani Nikula To: reconicreferenssse , "intel-gfx@lists.freedesktop.org" Cc: Rodrigo Vivi Subject: Re: Kernel panic in xe_display_flush_cleanup_work (NULL pointer dereference Alder Lake + Arc A370M) In-Reply-To: <4f9f30384c24683925e88d266b943d2102c442e3@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs Bertel Jungin Aukio 5, 02600 Espoo, Finland References: <4f9f30384c24683925e88d266b943d2102c442e3@intel.com> Date: Fri, 15 May 2026 19:20:15 +0300 Message-ID: <7976babe35c874c4e17a6326a2a1a036049d81dd@intel.com> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Fri, 15 May 2026, Jani Nikula wrote: > On Wed, 13 May 2026, reconicreferenssse 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