tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 95065cb54210eba86bed10cb2118041524d54573 commit: 4cd92d064cb0be72e56913d5213a3f9782d80e76 [67/7280] watch_queue: Implement mount topology and attribute change notifications config: s390-randconfig-s032-20201123 (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-134-gb59dbdaf-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=4cd92d064cb0be72e56913d5213a3f9782d80e76 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 4cd92d064cb0be72e56913d5213a3f9782d80e76 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> "sparse warnings: (new ones prefixed by >>)" >> fs/mount_notify.c:130:1: sparse: sparse: Using plain integer as NULL pointer >> fs/mount_notify.c:130:1: sparse: sparse: Using plain integer as NULL pointer fs/mount_notify.c:31:9: sparse: sparse: context imbalance in 'post_mount_notification' - different lock contexts for basic block vim +130 fs/mount_notify.c 121 122 /** 123 * sys_watch_mount - Watch for mount topology/attribute changes 124 * @dfd: Base directory to pathwalk from or fd referring to mount. 125 * @filename: Path to mount to place the watch upon 126 * @at_flags: Pathwalk control flags 127 * @watch_fd: The watch queue to send notifications to. 128 * @watch_id: The watch ID to be placed in the notification (-1 to remove watch) 129 */ > 130 SYSCALL_DEFINE5(watch_mount, --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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