From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F322328600; Wed, 24 Dec 2025 04:28:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766550533; cv=none; b=o/HDOdmYh+W5DdYRRJ4Dhv1Fi9BVU3orGXt0D5efqUDcTTZOTZeI7smE4cBFREDdnkvoHJXugvgAp2/fzJFy7f2dJ5cbWGyXSfQAFttQmdyg9aXSiuedjURHkj/51b8g9GChZPsrQbT6Ee+cPBYFa7c/L2LiV1OTLvyetlwMrFY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766550533; c=relaxed/simple; bh=tPiWJ1qOPpAdLCRMXmRnKkf27N/SE5ckemAkPYk1rO4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XuHjghnn/tNfYsUeaq7hmt5d3Tfg4gMt4druXjKqZhJGM7fDGJiNN1GxadMtCblCacLhgE42pn1oh4WqflI4qE9Ev9fIUy4OXt5xTZgX+MHyIF7m7yhlR8aLYdQqc+7a50kMt6igTG1OvuJ6J4fNg8F9gMtt0LkgLixIHpV865E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=A1rqss/u; arc=none smtp.client-ip=192.198.163.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="A1rqss/u" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766550531; x=1798086531; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=tPiWJ1qOPpAdLCRMXmRnKkf27N/SE5ckemAkPYk1rO4=; b=A1rqss/ujsUi694Mq68J+I7r1zoKY5OiOKwIFX+crIxOusRbWOvxxhc9 eI7Yjb6gA69GCbYgT1F67NMdgh6vXWDK6Sl9w3IJ0U9e3eU3gkJ5jYl7v O8Y98z4kD2eP77uKMqAKXAOZcWluE+KsDRc7EwsYUiJVzGWOHP7oo1PyO 2k8dFzgMdnAGbkl9lNTTIoz1qCSf+Oy4k2xYIpb8UFIgiBOkLDRbtxYt7 Hlvo+wWKq3jQwpd4OwedLEgJZ7ywVjw5OJv5Pbnb5QpgvCmfleC+0Z+eZ x1RfeR0VrJytUUBBZ7xoEySFA2QUOgwfDOfOZ2EYxRsIfn958/WTgxkc+ w==; X-CSE-ConnectionGUID: WdmHEgBiTvOfR4eYEYURrQ== X-CSE-MsgGUID: 1TgbJNurRBy49Z6G6t51zA== X-IronPort-AV: E=McAfee;i="6800,10657,11651"; a="70974261" X-IronPort-AV: E=Sophos;i="6.21,172,1763452800"; d="scan'208";a="70974261" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Dec 2025 20:28:51 -0800 X-CSE-ConnectionGUID: VrfUAIozQxmXPwuuM2h2/g== X-CSE-MsgGUID: CuZUL9r7SIeY3noXw8lfiA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,172,1763452800"; d="scan'208";a="199689484" Received: from igk-lkp-server01.igk.intel.com (HELO 8a0c053bdd2a) ([10.211.93.152]) by orviesa009.jf.intel.com with ESMTP; 23 Dec 2025 20:28:49 -0800 Received: from kbuild by 8a0c053bdd2a with local (Exim 4.98.2) (envelope-from ) id 1vYGUQ-0000000066q-2MMP; Wed, 24 Dec 2025 04:28:46 +0000 Date: Wed, 24 Dec 2025 05:28:08 +0100 From: kernel test robot To: Pavel Tikhomirov , Tejun Heo Cc: oe-kbuild-all@lists.linux.dev, Johannes Weiner , Michal =?iso-8859-1?Q?Koutn=FD?= , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Pavel Tikhomirov Subject: Re: [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process Message-ID: <202512240512.qCx1CzKN-lkp@intel.com> References: <20251223102124.738818-4-ptikhomirov@virtuozzo.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251223102124.738818-4-ptikhomirov@virtuozzo.com> Hi Pavel, kernel test robot noticed the following build errors: [auto build test ERROR on tj-cgroup/for-next] [also build test ERROR on next-20251219] [cannot apply to linus/master v6.16-rc1] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Pavel-Tikhomirov/cgroup-v2-freezer-allow-freezing-with-kthreads/20251223-182826 base: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next patch link: https://lore.kernel.org/r/20251223102124.738818-4-ptikhomirov%40virtuozzo.com patch subject: [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process config: x86_64-rhel-9.4-ltp (https://download.01.org/0day-ci/archive/20251224/202512240512.qCx1CzKN-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512240512.qCx1CzKN-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202512240512.qCx1CzKN-lkp@intel.com/ All errors (new ones prefixed by >>): kernel/cgroup/freezer.c: In function 'warn_freeze_timeout_task': >> kernel/cgroup/freezer.c:374:14: error: implicit declaration of function 'try_get_task_stack'; did you mean 'tryget_task_struct'? [-Wimplicit-function-declaration] 374 | if (!try_get_task_stack(task)) | ^~~~~~~~~~~~~~~~~~ | tryget_task_struct >> kernel/cgroup/freezer.c:377:9: error: implicit declaration of function 'put_task_stack'; did you mean 'put_task_struct'? [-Wimplicit-function-declaration] 377 | put_task_stack(task); | ^~~~~~~~~~~~~~ | put_task_struct vim +374 kernel/cgroup/freezer.c 357 358 static void warn_freeze_timeout_task(struct cgroup *cgrp, int timeout, 359 struct task_struct *task) 360 { 361 char *buf __free(kfree) = NULL; 362 pid_t tgid; 363 364 buf = kmalloc(PATH_MAX, GFP_KERNEL); 365 if (!buf) 366 return; 367 368 if (cgroup_path(cgrp, buf, PATH_MAX) < 0) 369 return; 370 371 tgid = task_pid_nr_ns(task, &init_pid_ns); 372 pr_warn("Freeze of %s took %ld sec, due to unfreezable process %d:%s.\n", 373 buf, timeout / USEC_PER_SEC, tgid, task->comm); > 374 if (!try_get_task_stack(task)) 375 return; 376 show_stack(task, NULL, KERN_WARNING); > 377 put_task_stack(task); 378 } 379 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki