Hi Edward, kernel test robot noticed the following build warnings: [auto build test WARNING on tytso-ext4/dev] [also build test WARNING on linus/master v6.12-rc4 next-20241025] [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/Edward-Adam-Davis/ext4-Add-a-sanity-check-for-next-dentry-when-insert/20241027-191200 base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev patch link: https://lore.kernel.org/r/tencent_E4CFC65D09852ECE2EF28C83A7C3C6E41206%40qq.com patch subject: [PATCH] ext4: Add a sanity check for next dentry when insert config: x86_64-kexec (https://download.01.org/0day-ci/archive/20241027/202410272335.nwupXeQD-lkp@xxxxxxxxx/config) compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241027/202410272335.nwupXeQD-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/202410272335.nwupXeQD-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from fs/ext4/namei.c:29: In file included from include/linux/pagemap.h:8: In file included from include/linux/mm.h:2213: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 505 | item]; | ~~~~ include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 512 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 525 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ >> fs/ext4/namei.c:2087:5: warning: no previous prototype for function 'ext4_check_next_dentry' [-Wmissing-prototypes] 2087 | int ext4_check_next_dentry(struct inode *dir, | ^ fs/ext4/namei.c:2087:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2087 | int ext4_check_next_dentry(struct inode *dir, | ^ | static 5 warnings generated. vim +/ext4_check_next_dentry +2087 fs/ext4/namei.c 2086 > 2087 int ext4_check_next_dentry(struct inode *dir, 2088 struct inode *inode, 2089 struct ext4_dir_entry_2 *de, 2090 int buf_size, 2091 struct ext4_filename *fname) 2092 { 2093 int nlen, rlen; 2094 2095 nlen = ext4_dir_rec_len(de->name_len, dir); 2096 rlen = ext4_rec_len_from_disk(de->rec_len, buf_size); 2097 if (de->inode) { 2098 struct ext4_dir_entry_2 *nde = 2099 (struct ext4_dir_entry_2 *)((char *)de + nlen); 2100 nde->rec_len = ext4_rec_len_to_disk(rlen - nlen, buf_size); 2101 de->rec_len = ext4_rec_len_to_disk(nlen, buf_size); 2102 de = nde; 2103 rlen = ext4_rec_len_from_disk(de->rec_len, buf_size); 2104 return fname_len(fname) > rlen - EXT4_BASE_DIR_LEN; 2105 } 2106 2107 return 0; 2108 } 2109 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
