Hi Song, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Song-Liu/kernfs-Add-__kernfs_xattr_get-for-RCU-protected-access/20250619-074026 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250618233739.189106-2-song%40kernel.org patch subject: [PATCH bpf-next 1/4] kernfs: Add __kernfs_xattr_get for RCU protected access config: m68k-randconfig-r122-20250619 (https://download.01.org/0day-ci/archive/20250619/202506192154.T111naKp-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 8.5.0 reproduce: (https://download.01.org/0day-ci/archive/20250619/202506192154.T111naKp-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/202506192154.T111naKp-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> fs/kernfs/inode.c:312:17: sparse: sparse: incompatible types in comparison expression (different address spaces): fs/kernfs/inode.c:312:17: sparse: struct kernfs_iattrs [noderef] __rcu * fs/kernfs/inode.c:312:17: sparse: struct kernfs_iattrs * vim +312 fs/kernfs/inode.c 304 305 int __kernfs_xattr_get(struct kernfs_node *kn, const char *name, 306 void *value, size_t size) 307 { 308 struct kernfs_iattrs *attrs; 309 310 WARN_ON_ONCE(!rcu_read_lock_held()); 311 > 312 attrs = rcu_dereference(kn->iattr); 313 if (!attrs) 314 return -ENODATA; 315 316 return simple_xattr_get(&attrs->xattrs, name, value, size); 317 } 318 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
