tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 8568bb2ccc278f344e6ac44af6ed010a90aa88dc commit: 9e2dcefa791e9d14006b360fba3455510fd3325d [2720/3921] lib: add allocation tagging support for memory allocation profiling config: microblaze-randconfig-r081-20240405 (https://download.01.org/0day-ci/archive/20240405/202404051340.7Wo7oiJ5-lkp@xxxxxxxxx/config) compiler: microblaze-linux-gcc (GCC) 13.2.0 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> | Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> | Closes: https://lore.kernel.org/r/202404051340.7Wo7oiJ5-lkp@xxxxxxxxx/ smatch warnings: lib/alloc_tag.c:142 alloc_tag_init() warn: passing zero to 'PTR_ERR' vim +/PTR_ERR +142 lib/alloc_tag.c 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 132 static int __init alloc_tag_init(void) 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 133 { 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 134 const struct codetag_type_desc desc = { 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 135 .section = "alloc_tags", 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 136 .tag_size = sizeof(struct alloc_tag), 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 137 .module_unload = alloc_tag_module_unload, 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 138 }; 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 139 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 140 alloc_tag_cttype = codetag_register_type(&desc); 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 141 if (IS_ERR_OR_NULL(alloc_tag_cttype)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This should just be IS_ERR(). I have written a blog that has more details: https://staticthinking.wordpress.com/2022/08/01/mixing-error-pointers-and-null/ 9e2dcefa791e9d Suren Baghdasaryan 2024-03-21 @142 return PTR_ERR(alloc_tag_cttype); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
