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 04AD4D12D50 for ; Wed, 3 Dec 2025 13:34:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BCD3910E123; Wed, 3 Dec 2025 13:34:25 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Jr8eXVt2"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2D8CC10E123; Wed, 3 Dec 2025 13:34:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1764768865; x=1796304865; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=uIwKU4z0XFz0x3nPc31cD73tNxK9Ux33rmyKxojLqlo=; b=Jr8eXVt2VT+RxaY0/3ZjdU68gjpJMJNXwpv9aEEGP7Nhcb3TgiZdYA2e GVkJvz3SQL0Zt88GgrTKhnnQjwHrJouVd07RFopzRMJ3r6PTRA8le2PtS 8eAB7zlHPSFqUfNA9L58TRX1eBYZgEX4KOXdEPVTv3nsc2rQgsz+CHQ2J t4/4/Dyrhgq2dKCuCRmZIb/377oEiTpGJg1/O93XZA1wjMitSEICl60nK KEJfYMAP5gZg4yyeaAxSqgURkWpChUDRWWJz07kfGin/c/HgSSZCnZAXL OjBt0m9HhdsR2Wgu5FZ0cd9ajgYLnjBYvdy0trGhvYMZO1x6Lb8a4hzgW A==; X-CSE-ConnectionGUID: BLF8DsPTTW2BVwZS3lXcsA== X-CSE-MsgGUID: KLMgUCRrR1GK2187uzFGLA== X-IronPort-AV: E=McAfee;i="6800,10657,11631"; a="77868625" X-IronPort-AV: E=Sophos;i="6.20,246,1758610800"; d="scan'208";a="77868625" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2025 05:34:25 -0800 X-CSE-ConnectionGUID: X/LGW7UvTeukrck5Kx1Prg== X-CSE-MsgGUID: Uyj04tfgS76mM+P5yLmVYA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,246,1758610800"; d="scan'208";a="194574716" Received: from mjarzebo-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.246.226]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2025 05:34:22 -0800 From: Jani Nikula To: "Borah, Chaitanya Kumar" , brauner@kernel.org Cc: "intel-gfx@lists.freedesktop.org" , "intel-xe@lists.freedesktop.org" , "Saarinen, Jani" , "Kurmi, Suresh Kumar" , Thorsten Leemhuis , Ville =?utf-8?B?U3lyasOkbMOk?= Subject: Re: BISECTED REGRESSION on v6.18 (was: REGRESSION on drm-tip) In-Reply-To: <03c013c0-be12-42ab-91d1-f87395c890e3@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <03c013c0-be12-42ab-91d1-f87395c890e3@intel.com> Date: Wed, 03 Dec 2025 15:34:19 +0200 Message-ID: MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On Thu, 27 Nov 2025, "Borah, Chaitanya Kumar" wrote: > Hello Christian, > > This is Chaitanya (again!). > > This mail is regarding another regression we are seeing in our CI > runs[1] on drm-tip (with both xe and i915). Referring to drm-tip is downplaying the problem. The bisected regression is in v6.18 release. It's breaking suspend/resume across a lot of platforms on two drivers, i915 and xe. a3f8f8662771 ("power: always freeze efivarfs") As far as regressions go, it's pretty bad. Please prioritize. BR, Jani. > > ````````````````````````````````````````````````````````````````````````````````` > <4> [157.687644] ------------[ cut here ]------------ > <4> [157.687768] WARNING: CPU: 5 PID: 2277 at kernel/freezer.c:139 > __set_task_frozen+0x7f/0xb0 > ... > <4> [157.687923] PKRU: 55555554 > <4> [157.687924] Call Trace: > <4> [157.687925] > <4> [157.687926] ? __pfx___set_task_frozen+0x10/0x10 > <4> [157.687929] task_call_func+0x6d/0x120 > <4> [157.687932] ? cgroup_freezing+0x89/0x200 > <4> [157.687937] freeze_task+0x98/0x100 > <4> [157.687940] try_to_freeze_tasks+0xd2/0x440 > <4> [157.687946] freeze_processes+0x56/0xd0 > <4> [157.687948] hibernate+0x129/0x4a0 > <4> [157.687951] state_store+0xd3/0xe0 > <4> [157.687954] kobj_attr_store+0x12/0x40 > <4> [157.687959] sysfs_kf_write+0x4d/0x80 > <4> [157.687963] kernfs_fop_write_iter+0x188/0x240 > <4> [157.687967] vfs_write+0x283/0x540 > <4> [157.687969] ? free_to_partial_list+0x46d/0x640 > <4> [157.687976] ksys_write+0x6f/0xf0 > <4> [157.687980] __x64_sys_write+0x19/0x30 > <4> [157.687982] x64_sys_call+0x79/0x26a0 > <4> [157.687984] do_syscall_64+0x93/0xd60 > <4> [157.687987] ? putname+0x65/0x90 > <4> [157.687990] ? kmem_cache_free+0x553/0x680 > <4> [157.687995] ? putname+0x65/0x90 > <4> [157.687997] ? putname+0x65/0x90 > <4> [157.687999] ? do_sys_openat2+0x8b/0xd0 > <4> [157.688003] ? __x64_sys_openat+0x54/0xa0 > <4> [157.688007] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688009] ? __fput+0x1bf/0x2f0 > <4> [157.688012] ? fput_close_sync+0x3d/0xa0 > <4> [157.688015] ? __x64_sys_close+0x3e/0x90 > <4> [157.688017] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688019] ? putname+0x65/0x90 > <4> [157.688021] ? putname+0x65/0x90 > <4> [157.688023] ? do_sys_openat2+0x8b/0xd0 > <4> [157.688024] ? __fput+0x1bf/0x2f0 > <4> [157.688028] ? __x64_sys_openat+0x54/0xa0 > <4> [157.688032] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688034] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688036] ? irqentry_exit+0x77/0xb0 > <4> [157.688038] ? exc_page_fault+0xbd/0x2c0 > <4> [157.688042] entry_SYSCALL_64_after_hwframe+0x76/0x7e > <4> [157.688044] RIP: 0033:0x72523c91c574 > ````````````````````````````````````````````````````````````````````````````````` > Details log can be found in [2]. > > After bisecting the tree, the following patch [3] seems to be the first > "bad" commit > > ````````````````````````````````````````````````````````````````````````````````````````````````````````` > commit a3f8f8662771285511ae26c4c8d3ba1cd22159b9 > Author: Christian Brauner > Date: Wed Nov 5 14:39:45 2025 +0100 > > power: always freeze efivarfs > ````````````````````````````````````````````````````````````````````````````````````````````````````````` > > We also verified that if we revert the patch the issue is not seen. > > Could you please check why the patch causes this regression and provide > a fix if necessary? > > Thank you. > > Regards > > Chaitanya > > [1] > https://intel-gfx-ci.01.org/tree/drm-tip/index.html?testfilter=suspend > [2] > https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17595/shard-mtlp-6/igt@gem_exec_suspend@basic-s4-devices.html > [3] > https://gitlab.com/freedesktop-mirror/drm-tip/-/commit/a3f8f8662771285511ae26c4c8d3ba1cd22159b9 -- Jani Nikula, Intel