Hi "Pali, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on cifs/for-next] [also build test WARNING on shaggy/jfs-next linus/master v5.14-rc5 next-20210809] [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] url: https://github.com/0day-ci/linux/commits/Pali-Roh-r/fs-Remove-usage-of-br... base: git://git.samba.org/sfrench/cifs-2.6.git for-next config: i386-randconfig-s031-20210809 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://github.com/0day-ci/linux/commit/fb17de54426f1b09f419d677cb3d8aa07... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Pali-Roh-r/fs-Remove-usage-of-broken-nls_utf8-and-drop-it/20210809-002825 git checkout fb17de54426f1b09f419d677cb3d8aa079825dd5 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) fs/jfs/jfs_unicode.c:50:42: sparse: expected unsigned short const [usertype] *pwcs fs/jfs/jfs_unicode.c:50:42: sparse: got restricted __le16 const [usertype] *from vim +50 fs/jfs/jfs_unicode.c 12 13 /* 14 * NAME: jfs_strfromUCS() 15 * 16 * FUNCTION: Convert little-endian unicode string to character string 17 * 18 */ 19 int jfs_strfromUCS_le(char *to, int maxlen, const __le16 * from, 20 int len, struct nls_table *codepage) 21 { 22 int i; 23 int outlen = 0; 24 static int warn_again = 5; /* Only warn up to 5 times total */ 25 int warn = !!warn_again; /* once per string */ 26 27 if (codepage) { 28 for (i = 0; (i < len) && from[i] && outlen < maxlen-1; i++) { 29 int charlen; 30 charlen = 31 codepage->uni2char(le16_to_cpu(from[i]), 32 &to[outlen], 33 maxlen-1-outlen); 34 if (charlen > 0) 35 outlen += charlen; 36 else { 37 to[outlen++] = '?'; 38 if (unlikely(warn)) { 39 warn--; 40 warn_again--; 41 printk(KERN_ERR 42 "non-latin1 character 0x%x found in JFS file name\n", 43 le16_to_cpu(from[i])); 44 printk(KERN_ERR 45 "mount with iocharset=utf8 to access\n"); 46 } 47 } 48 } 49 } else { 51 UTF16_LITTLE_ENDIAN, to, maxlen-1); 52 } 53 to[outlen] = 0; 54 return outlen; 55 } 56 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org