tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-testing head: 26360a8c9732cff2ee5bc2f180e9716b63e9f650 commit: 07b42a72474e4ab59d6acb451f7816664095d7c0 [30/34] kernfs: make ->attr.open RCU protected. config: alpha-randconfig-s032-20220425 (https://download.01.org/0day-ci/archive/20220427/202204270438.Uex7Kt3b-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 11.3.0 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: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?id=07b42a72474e4ab59d6acb451f7816664095d7c0 git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git git fetch --no-tags driver-core driver-core-testing git checkout 07b42a72474e4ab59d6acb451f7816664095d7c0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha SHELL=/bin/bash fs/kernfs/ 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/kernfs/file.c:160:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct atomic_t const [usertype] *v @@ got struct atomic_t [noderef] __rcu * @@ fs/kernfs/file.c:160:46: sparse: expected struct atomic_t const [usertype] *v fs/kernfs/file.c:160:46: sparse: got struct atomic_t [noderef] __rcu * fs/kernfs/file.c:204:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct atomic_t const [usertype] *v @@ got struct atomic_t [noderef] __rcu * @@ fs/kernfs/file.c:204:46: sparse: expected struct atomic_t const [usertype] *v fs/kernfs/file.c:204:46: sparse: got struct atomic_t [noderef] __rcu * vim +160 fs/kernfs/file.c 414985ae23c031e Tejun Heo 2013-11-28 155 414985ae23c031e Tejun Heo 2013-11-28 156 static int kernfs_seq_show(struct seq_file *sf, void *v) 414985ae23c031e Tejun Heo 2013-11-28 157 { c525aaddc366df2 Tejun Heo 2013-12-11 158 struct kernfs_open_file *of = sf->private; 414985ae23c031e Tejun Heo 2013-11-28 159 adc5e8b58f4886d Tejun Heo 2013-12-11 @160 of->event = atomic_read(&of->kn->attr.open->event); 414985ae23c031e Tejun Heo 2013-11-28 161 adc5e8b58f4886d Tejun Heo 2013-12-11 162 return of->kn->attr.ops->seq_show(sf, v); 414985ae23c031e Tejun Heo 2013-11-28 163 } 414985ae23c031e Tejun Heo 2013-11-28 164 :::::: The code at line 160 was first introduced by commit :::::: adc5e8b58f4886d45f79f4ff41a09001a76a6b12 kernfs: drop s_ prefix from kernfs_node members :::::: TO: Tejun Heo <tj@xxxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
