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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> 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> X-Rspam-User: X-Stat-Signature: t7whdr15up81suzcdfykw3oa4qbikrwu X-Rspamd-Queue-Id: 6094E100004 X-Rspamd-Server: rspam03 X-HE-Tag: 1772670895-200904 X-HE-Meta: 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 zokwviP8 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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