Hi Ibrahim, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.16-rc3 next-20250623] [cannot apply to jack-fs/fsnotify] [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/Ibrahim-Jirdeh/fanotify-support-custom-default-close-response/20250624-032902 base: linus/master patch link: https://lore.kernel.org/r/20250623192503.2673076-1-ibrahimjirdeh%40meta.com patch subject: [PATCH] fanotify: support custom default close response config: arm-randconfig-002-20250624 (https://download.01.org/0day-ci/archive/20250624/202506241819.lF9Wd4Tn-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250624/202506241819.lF9Wd4Tn-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202506241819.lF9Wd4Tn-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): fs/notify/fanotify/fanotify_user.c: In function 'finish_permission_event.constprop': >> fs/notify/fanotify/fanotify_user.c:316:3: warning: argument 2 null where non-null expected [-Wnonnull] memcpy(&event->audit_rule, friar, sizeof(*friar)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/string.h:65, from include/linux/bitmap.h:13, from include/linux/cpumask.h:12, from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/sysctl.h:26, from include/linux/fanotify.h:5, from fs/notify/fanotify/fanotify_user.c:2: arch/arm/include/asm/string.h:20:15: note: in a call to function 'memcpy' declared here extern void * memcpy(void *, const void *, __kernel_size_t); ^~~~~~ vim +316 fs/notify/fanotify/fanotify_user.c 70529a199574c1 Richard Guy Briggs 2023-02-03 301 40873284d7106f Jan Kara 2019-01-08 302 /* 40873284d7106f Jan Kara 2019-01-08 303 * Finish processing of permission event by setting it to ANSWERED state and 40873284d7106f Jan Kara 2019-01-08 304 * drop group->notification_lock. 40873284d7106f Jan Kara 2019-01-08 305 */ 40873284d7106f Jan Kara 2019-01-08 306 static void finish_permission_event(struct fsnotify_group *group, 70529a199574c1 Richard Guy Briggs 2023-02-03 307 struct fanotify_perm_event *event, u32 response, 70529a199574c1 Richard Guy Briggs 2023-02-03 308 struct fanotify_response_info_audit_rule *friar) 40873284d7106f Jan Kara 2019-01-08 309 __releases(&group->notification_lock) 40873284d7106f Jan Kara 2019-01-08 310 { fabf7f29b3e2ce Jan Kara 2019-01-08 311 bool destroy = false; fabf7f29b3e2ce Jan Kara 2019-01-08 312 40873284d7106f Jan Kara 2019-01-08 313 assert_spin_locked(&group->notification_lock); 70529a199574c1 Richard Guy Briggs 2023-02-03 314 event->response = response & ~FAN_INFO; 70529a199574c1 Richard Guy Briggs 2023-02-03 315 if (response & FAN_INFO) 70529a199574c1 Richard Guy Briggs 2023-02-03 @316 memcpy(&event->audit_rule, friar, sizeof(*friar)); 70529a199574c1 Richard Guy Briggs 2023-02-03 317 fabf7f29b3e2ce Jan Kara 2019-01-08 318 if (event->state == FAN_EVENT_CANCELED) fabf7f29b3e2ce Jan Kara 2019-01-08 319 destroy = true; fabf7f29b3e2ce Jan Kara 2019-01-08 320 else 40873284d7106f Jan Kara 2019-01-08 321 event->state = FAN_EVENT_ANSWERED; 40873284d7106f Jan Kara 2019-01-08 322 spin_unlock(&group->notification_lock); fabf7f29b3e2ce Jan Kara 2019-01-08 323 if (destroy) fabf7f29b3e2ce Jan Kara 2019-01-08 324 fsnotify_destroy_event(group, &event->fae.fse); 40873284d7106f Jan Kara 2019-01-08 325 } 40873284d7106f Jan Kara 2019-01-08 326 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
