Re: [PATCH v9 09/10] fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile

From: kernel test robot
Date: Sat Oct 17 2020 - 01:26:17 EST

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In reply to: Konstantin Komarov: "[PATCH v9 09/10] fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile"
Next in thread: Konstantin Komarov: "[PATCH v9 01/10] fs/ntfs3: Add headers and misc files"
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Hi Konstantin,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.9 next-20201016]
[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/Konstantin-Komarov/NTFS-read-write-driver-GPL-implementation-by-Paragon-Software/20201016-233309
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9ff9b0d392ea08090cd1780fb196f36dbb586529
config: x86_64-randconfig-a011-20201017 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project efd02c1548ee458d59063f6393e94e972b5c3d50)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://github.com/0day-ci/linux/commit/3339f0d0890cfe6ed760dc24916de15e74c4f67d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Konstantin-Komarov/NTFS-read-write-driver-GPL-implementation-by-Paragon-Software/20201016-233309
git checkout 3339f0d0890cfe6ed760dc24916de15e74c4f67d
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> fs/ntfs3/attrib.c:1256:7: warning: variable 'hint' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
if (vcn + clst_data &&
^~~~~~~~~~~~~~~
fs/ntfs3/attrib.c:1263:11: note: uninitialized use occurs here
hint + 1, len - clst_data, NULL, 0,
^~~~
fs/ntfs3/attrib.c:1256:7: note: remove the '&&' if its condition is always true
if (vcn + clst_data &&
^~~~~~~~~~~~~~~~~~
fs/ntfs3/attrib.c:1254:18: note: initialize the variable 'hint' to silence this warning
CLST alen, hint;
^
= 0
fs/ntfs3/attrib.c:72:20: warning: unused function 'attr_must_be_resident' [-Wunused-function]
static inline bool attr_must_be_resident(struct ntfs_sb_info *sbi,
^
2 warnings generated.

vim +1256 fs/ntfs3/attrib.c

dc58d89d2835db2 Konstantin Komarov 2020-10-16 1171
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1172 /*
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1173 * attr_allocate_frame
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1174 *
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1175 * allocate/free clusters for 'frame'
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1176 */
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1177 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size,
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1178 u64 new_valid)
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1179 {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1180 int err = 0;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1181 struct runs_tree *run = &ni->file.run;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1182 struct ntfs_sb_info *sbi = ni->mi.sbi;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1183 struct ATTRIB *attr, *attr_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1184 struct ATTR_LIST_ENTRY *le, *le_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1185 struct mft_inode *mi, *mi_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1186 CLST svcn, evcn1, next_evcn1, next_svcn, lcn, len;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1187 CLST vcn, end, clst_data;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1188 u64 total_size, valid_size, data_size;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1189 bool is_compr;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1190
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1191 le_b = NULL;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1192 attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL, &mi_b);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1193 if (!attr_b)
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1194 return -ENOENT;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1195
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1196 if (!is_attr_ext(attr_b))
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1197 return -EINVAL;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1198
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1199 vcn = frame << NTFS_LZNT_CUNIT;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1200 end = vcn + (1u << NTFS_LZNT_CUNIT);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1201 total_size = le64_to_cpu(attr_b->nres.total_size);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1202
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1203 svcn = le64_to_cpu(attr_b->nres.svcn);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1204 evcn1 = le64_to_cpu(attr_b->nres.evcn) + 1;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1205 data_size = le64_to_cpu(attr_b->nres.data_size);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1206
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1207 if (svcn <= vcn && vcn < evcn1) {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1208 attr = attr_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1209 le = le_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1210 mi = mi_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1211 } else if (!le_b) {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1212 err = -EINVAL;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1213 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1214 } else {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1215 le = le_b;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1216 attr = ni_find_attr(ni, attr_b, &le, ATTR_DATA, NULL, 0, &vcn,
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1217 &mi);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1218 if (!attr) {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1219 err = -EINVAL;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1220 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1221 }
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1222 svcn = le64_to_cpu(attr->nres.svcn);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1223 evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1224 }
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1225
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1226 err = attr_load_runs(attr, ni, run, NULL);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1227 if (err)
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1228 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1229
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1230 err = attr_is_frame_compressed(ni, attr_b, frame, &clst_data,
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1231 &is_compr);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1232 if (err)
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1233 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1234
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1235 total_size -= (u64)clst_data << sbi->cluster_bits;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1236
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1237 len = bytes_to_cluster(sbi, compr_size);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1238
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1239 if (len == clst_data)
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1240 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1241
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1242 if (len < clst_data) {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1243 err = run_deallocate_ex(sbi, run, vcn + len, clst_data - len,
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1244 NULL, true);
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1245 if (err)
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1246 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1247
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1248 if (!run_add_entry(run, vcn + len, SPARSE_LCN,
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1249 clst_data - len)) {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1250 err = -ENOMEM;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1251 goto out;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1252 }
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1253 } else {
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1254 CLST alen, hint;
dc58d89d2835db2 Konstantin Komarov 2020-10-16 1255 /* Get the last lcn to allocate from */
dc58d89d2835db2 Konstantin Komarov 2020-10-16 @1256 if (vcn + clst_data &&

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip

Next message: Willy Tarreau: "Re: [PATCH] drivers/virt: vmgenid: add vm generation id driver"
Previous message: Raj, Ashok: "Re: [PATCH 1/1] pci: pciehp: Handle MRL interrupts to enable slot for hotplug."
In reply to: Konstantin Komarov: "[PATCH v9 09/10] fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile"
Next in thread: Konstantin Komarov: "[PATCH v9 01/10] fs/ntfs3: Add headers and misc files"
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