From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 30924C8E6 for ; Thu, 5 Mar 2026 00:34:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772670896; cv=none; b=NlvoeGQkrhZfYj844ftVJ4kuqOJhj+c0uC8uyDjSutHlK6prGINXLTP8pcAq9Bhnvbj8GXgNqa14wFfo7NkVu0DGgLgmWplCHPuvSGYERhd7v1hRCY5gMrFH9HAqBkTtUzRnWUfch/aC2wZ6dL9VvPPgyjUbKstd8AXoMT80mg0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772670896; c=relaxed/simple; bh=Bxrd2fiwvhsKyZsl+nxo29zi+60R+/EN/vFklSOWd+8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=kQRoQfppOZaMyf/7pO/3QLRF84XRcJUgb6+tU+UarhcBDG5x3JkNe4k9niyYAEx7Rewmphj544/eeiaPgCSGjgCOOOKNZwBrACzjWbIsD8aAruiP/YMkFCweI/Lh+7nmRnWtUSKpDS+gHcHCysHXxvkNjKH3YQ1Ezh9wdFBrX1s= 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=Zm/iCaix; arc=none smtp.client-ip=198.175.65.19 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="Zm/iCaix" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772670895; x=1804206895; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Bxrd2fiwvhsKyZsl+nxo29zi+60R+/EN/vFklSOWd+8=; b=Zm/iCaix0T0q6iZtCx6PWkdBbtHAjbuMi5hIUiIUjofunklhBYDfB5Vz /4ADf4Jml4yitzp/f79W6ODV3ML/DCsCUg7Ngt6TiatryFaE8vWcdQqgI 4QUiZ8sRSrXbYSu+r9iRhGXsV6i8h5eM9J6k/mUJoxGMNpx3e1bEr8SNd vK+UlWTqFsT44z4smz/0VKB7bnQ/5WtjHYI4Cllddbcd3nWTdlMo4JHaE KgzEMYcZ1ILvYu9ZEnlPnbJpcaUjZ+rfqhz4afiPkX9McHMuj84UDpEt0 XP5rMRtk4YRZ/MuPHnB2G4tn5o5zlWtSnrCGFjzxsV74vYmiJ1HXrtOLl Q==; X-CSE-ConnectionGUID: sKI+RxEMRqWDOI5L6hyGvg== X-CSE-MsgGUID: eKGt3uPcTZ+rddU08VTyxg== X-IronPort-AV: E=McAfee;i="6800,10657,11719"; a="73653558" X-IronPort-AV: E=Sophos;i="6.21,325,1763452800"; d="scan'208";a="73653558" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2026 16:34:54 -0800 X-CSE-ConnectionGUID: sUWpvx1ITcW6G79rW8WCKA== X-CSE-MsgGUID: y/9N3ZxqS7ePC3zmt8m0sQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,325,1763452800"; d="scan'208";a="217751914" Received: from lkp-server01.sh.intel.com (HELO f27a57aa7a36) ([10.239.97.150]) by orviesa010.jf.intel.com with ESMTP; 04 Mar 2026 16:34:51 -0800 Received: from kbuild by f27a57aa7a36 with local (Exim 4.98.2) (envelope-from ) id 1vxwfv-000000004r7-2iLs; Thu, 05 Mar 2026 00:34:47 +0000 Date: Thu, 5 Mar 2026 08:33:54 +0800 From: kernel test robot To: Maximilian Pezzullo via B4 Relay , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , linux-kernel@vger.kernel.org, Terry M , Maximilian Pezzullo Subject: Re: [PATCH] mm/vmstat: reject zero vm.stat_interval to prevent busy-loop Message-ID: <202603050819.oMnaHoIC-lkp@intel.com> References: <20260304-mm-vmstat-reject-zero-vm-stat_interval-to-prevent-busy-loop-v1-1-c03c9555ff15@gmail.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: <20260304-mm-vmstat-reject-zero-vm-stat_interval-to-prevent-busy-loop-v1-1-c03c9555ff15@gmail.com> Hi Maximilian, kernel test robot noticed the following build warnings: [auto build test WARNING on af4e9ef3d78420feb8fe58cd9a1ab80c501b3c08] url: https://github.com/intel-lab-lkp/linux/commits/Maximilian-Pezzullo-via-B4-Relay/mm-vmstat-reject-zero-vm-stat_interval-to-prevent-busy-loop/20260304-153052 base: af4e9ef3d78420feb8fe58cd9a1ab80c501b3c08 patch link: https://lore.kernel.org/r/20260304-mm-vmstat-reject-zero-vm-stat_interval-to-prevent-busy-loop-v1-1-c03c9555ff15%40gmail.com patch subject: [PATCH] mm/vmstat: reject zero vm.stat_interval to prevent busy-loop config: parisc-randconfig-002-20260305 (https://download.01.org/0day-ci/archive/20260305/202603050819.oMnaHoIC-lkp@intel.com/config) compiler: hppa-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260305/202603050819.oMnaHoIC-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/202603050819.oMnaHoIC-lkp@intel.com/ All warnings (new ones prefixed by >>): >> mm/vmstat.c:2117:12: warning: 'vmstat_interval_handler' defined but not used [-Wunused-function] static int vmstat_interval_handler(const struct ctl_table *table, int write, ^~~~~~~~~~~~~~~~~~~~~~~ vim +/vmstat_interval_handler +2117 mm/vmstat.c 2116 > 2117 static int vmstat_interval_handler(const struct ctl_table *table, int write, 2118 void *buffer, size_t *lenp, loff_t *ppos) 2119 { 2120 int ret = proc_dointvec_jiffies(table, write, buffer, lenp, ppos); 2121 2122 if (ret == 0 && write && sysctl_stat_interval == 0) { 2123 sysctl_stat_interval = HZ; 2124 return -EINVAL; 2125 } 2126 return ret; 2127 } 2128 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki