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X-IronPort-AV: E=McAfee;i="6600,9927,10791"; a="373737453" X-IronPort-AV: E=Sophos;i="6.01,254,1684825200"; d="scan'208";a="373737453" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2023 00:19:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10791"; a="759451251" X-IronPort-AV: E=Sophos;i="6.01,254,1684825200"; d="scan'208";a="759451251" Received: from lkp-server01.sh.intel.com (HELO d1ccc7e87e8f) ([10.239.97.150]) by orsmga008.jf.intel.com with ESMTP; 04 Aug 2023 00:19:08 -0700 Received: from kbuild by d1ccc7e87e8f with local (Exim 4.96) (envelope-from ) id 1qRp5X-0002il-2r; Fri, 04 Aug 2023 07:19:07 +0000 Date: Fri, 4 Aug 2023 15:18:21 +0800 From: kernel test robot To: Douglas Anderson Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Andrew Morton Subject: [linux-next:master 6492/7272] kernel/watchdog.c:111:12: warning: 'hardlockup_all_cpu_backtrace_proc_handler' defined but not used Message-ID: <202308041501.2T8kM1gb-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspam-User: X-Stat-Signature: qrfq9j4iy8cxkkazepk31b8ykoyat6it X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 3193CC0017 X-HE-Tag: 1691133551-331641 X-HE-Meta: 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 aJHaqSLX I5GqjGhssv0UiVsyO53E1+OvGC3iVow0xoXvxo8reCuMD/Uw1F7ks71zAcCduASflKOO0YnprUiXNT5OJ6caPNJ/hl//TiXTjWfLvBlNdTwGnNbmkM6pRvY1UIvCQkdYhaxsYG0z6cQTpvMaxIcNg/3AveW0jeqHzOvZ8aD2k9/wO92xVUatNTRRYRxb5DRPq7rKLHKIvrmllgNioAmfzTKdDiRHQ6h0cSd314JKKo8aLOdeVK5EBYYqFkgSbTavdbyljJyphEEBOPcthrl+sfim+GOqavnLf5vJjOmD6exTrWlZpFNkQ8JB2muCCD/SMOs6E6pCByTU5Eq2juI++WrpgHpBpvMN9Ll/X X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: bdffb18b5dd8071cd25685b966f380a30b1fadaa commit: 838b3b76220d5b1bc53e4186d8936c5ec6810bf0 [6492/7272] watchdog/hardlockup: avoid large stack frames in watchdog_hardlockup_check() config: x86_64-randconfig-x012-20230731 (https://download.01.org/0day-ci/archive/20230804/202308041501.2T8kM1gb-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230804/202308041501.2T8kM1gb-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/202308041501.2T8kM1gb-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/watchdog.c:111:12: warning: 'hardlockup_all_cpu_backtrace_proc_handler' defined but not used [-Wunused-function] 111 | static int hardlockup_all_cpu_backtrace_proc_handler(struct ctl_table *table, int write, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/hardlockup_all_cpu_backtrace_proc_handler +111 kernel/watchdog.c 110 > 111 static int hardlockup_all_cpu_backtrace_proc_handler(struct ctl_table *table, int write, 112 void *buffer, size_t *lenp, loff_t *ppos) 113 { 114 int ret; 115 116 ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); 117 118 /* 119 * Only allocate memory for the backtrace mask if userspace actually 120 * wants to trace all CPUs since this can take up 1K of space on a 121 * system with CONFIG_NR_CPUS=8192. 122 */ 123 if (sysctl_hardlockup_all_cpu_backtrace && !hardlockup_backtrace_mask) { 124 hardlockup_backtrace_mask = 125 kzalloc(sizeof(*hardlockup_backtrace_mask), GFP_KERNEL); 126 } else if (!sysctl_hardlockup_all_cpu_backtrace && hardlockup_backtrace_mask) { 127 kfree(hardlockup_backtrace_mask); 128 hardlockup_backtrace_mask = NULL; 129 } 130 131 return ret; 132 } 133 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki