From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (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 D5BC3211A05; Tue, 23 Dec 2025 20:59:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766523569; cv=none; b=lH7Ac0H8DyGfxNqVBwUuGuPI6u5TrFrEL2iUYqDV2HOqLNtY/Y3cuUX5Q+8LJ1wIwD0taqB5xQHajj3bdk+uHlMeIGbm912eNWbLrE2MIDdc9MRo+xmaPwdXJTSLmNggcPXgClJuLu9b4NYKMGY0+x5HHgT1qP2hOX76Ld0YYyI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766523569; c=relaxed/simple; bh=WFi7cvhAPiPh/XR+92Qqh6vdtwN3HsAQzlz22Tp190A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=AsKtelhCaM9H6Bt8ZRGpLUyJ/EpuxPvPSsRuV4gKiM+z5MT3+7cgBdHe0w66dKsgIfWwll8iPs6WxCW2f1wVG3oYihk8fP7DVpVotPa0tAI/SlLH4okdcs8jKkwU7IOpV8U/rc256I4+hoMTFR+RUh6yOUKUVKNbmzh2XOhlPjA= 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=D1FLaU+I; arc=none smtp.client-ip=192.198.163.14 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="D1FLaU+I" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766523567; x=1798059567; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=WFi7cvhAPiPh/XR+92Qqh6vdtwN3HsAQzlz22Tp190A=; b=D1FLaU+IoRZpmeTdsv3H1Vgt5JBFMTFy4yuCJkdJfBz3AJRCNyX3UarN FmQSrF1AqC31JV83Ej0cioDQnVD3v3oY3UPqqDl7B8zCBhxDKbVf553OD NSBctp0a/ev5xQFRngVQC/7bGqFE3ljyOPF0AqYKmk8BTjGKkycITb1cx 1ASX4NLz99DvwFb3TYuvJTZA9OmV1oJW0HqGwyJr621qRCljXvFBL5XIh QmmDmUuy84ONuymSg9rNbGfFC1XPeu4p9nsVzVI/sp1aWu9Lz6Qe742Dc a5uhgU4KZVvTqdPQPHmulC8+woHOlZB4o0JjnKe6yFmZLk8RR0WwAYi9V g==; X-CSE-ConnectionGUID: 4dnyDQfKRMG0/hfNstKIig== X-CSE-MsgGUID: ty10qx5eSquB6mx8oHH96A== X-IronPort-AV: E=McAfee;i="6800,10657,11651"; a="68415523" X-IronPort-AV: E=Sophos;i="6.21,171,1763452800"; d="scan'208";a="68415523" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Dec 2025 12:59:26 -0800 X-CSE-ConnectionGUID: dDDoQCVvRCCDHIFDxhpvxg== X-CSE-MsgGUID: kzgOIQu/SqCJ7OoAlAsY/A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,171,1763452800"; d="scan'208";a="199105678" Received: from lkp-server02.sh.intel.com (HELO dd3453e2b682) ([10.239.97.151]) by orviesa010.jf.intel.com with ESMTP; 23 Dec 2025 12:59:25 -0800 Received: from kbuild by dd3453e2b682 with local (Exim 4.98.2) (envelope-from ) id 1vY9TV-000000002N7-2fPV; Tue, 23 Dec 2025 20:59:21 +0000 Date: Wed, 24 Dec 2025 04:58:39 +0800 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: <202512240409.06R0khaZ-lkp@intel.com> References: <20251223102124.738818-4-ptikhomirov@virtuozzo.com> Precedence: bulk X-Mailing-List: cgroups@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 linus/master v6.19-rc2 next-20251219] [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: s390-randconfig-r071-20251224 (https://download.01.org/0day-ci/archive/20251224/202512240409.06R0khaZ-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512240409.06R0khaZ-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/202512240409.06R0khaZ-lkp@intel.com/ All errors (new ones prefixed by >>): kernel/cgroup/freezer.c: In function 'warn_freeze_timeout_task': >> kernel/cgroup/freezer.c:374:7: error: implicit declaration of function 'try_get_task_stack'; did you mean 'tryget_task_struct'? [-Werror=implicit-function-declaration] if (!try_get_task_stack(task)) ^~~~~~~~~~~~~~~~~~ tryget_task_struct >> kernel/cgroup/freezer.c:377:2: error: implicit declaration of function 'put_task_stack'; did you mean 'put_task_struct'? [-Werror=implicit-function-declaration] put_task_stack(task); ^~~~~~~~~~~~~~ put_task_struct cc1: some warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for CAN_DEV Depends on [n]: NETDEVICES [=n] && CAN [=y] Selected by [y]: - CAN [=y] && NET [=y] 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