Hi Vincent, kernel test robot noticed the following build warnings: [auto build test WARNING on 9561de3a55bed6bdd44a12820ba81ec416e705a7] url: https://github.com/intel-lab-lkp/linux/commits/Vincent-Whitchurch/watchdog-mm-Allow-dumping-memory-info-in-pretimeout/20230609-144807 base: 9561de3a55bed6bdd44a12820ba81ec416e705a7 patch link: https://lore.kernel.org/r/20230608-pretimeout-oom-v1-1-542cc91062d7%40axis.com patch subject: [PATCH] watchdog/mm: Allow dumping memory info in pretimeout config: parisc-buildonly-randconfig-r006-20230608 (https://download.01.org/0day-ci/archive/20230609/202306091651.GsOxG35Q-lkp@xxxxxxxxx/config) compiler: hppa-linux-gcc (GCC) 12.3.0 reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 9561de3a55bed6bdd44a12820ba81ec416e705a7 b4 shazam https://lore.kernel.org/r/20230608-pretimeout-oom-v1-1-542cc91062d7@xxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=parisc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash 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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306091651.GsOxG35Q-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> mm/oom_kill.c:156:21: warning: no previous prototype for 'find_trylock_task_mm' [-Wmissing-prototypes] 156 | struct task_struct *find_trylock_task_mm(struct task_struct *p) | ^~~~~~~~~~~~~~~~~~~~ vim +/find_trylock_task_mm +156 mm/oom_kill.c 151 152 /* 153 * Identical to the above, except that we avoid tasks which we can't lock, to 154 * avoid deadlocks when called from an interrupt handler. 155 */ > 156 struct task_struct *find_trylock_task_mm(struct task_struct *p) 157 { 158 struct task_struct *t; 159 160 rcu_read_lock(); 161 162 for_each_thread(p, t) { 163 if (!task_trylock(t)) 164 continue; 165 if (likely(t->mm)) 166 goto found; 167 task_unlock(t); 168 } 169 t = NULL; 170 found: 171 rcu_read_unlock(); 172 173 return t; 174 } 175 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
