From: kernel test robot <lkp@intel.com>
To: Zach Brown <zab@zabbo.net>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: [zab-rpdfs:rpdfs-initial 85/93] fs/rpdfs/mkfs.c:23:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false
Date: Sun, 02 Aug 2026 06:50:53 +0800 [thread overview]
Message-ID: <202608020604.HX4Ue3Tz-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/zab/linux-rpdfs.git rpdfs-initial
head: 7dd9571ed4664ad741e8519b4a4369a2d84523f6
commit: 2f7d4b4295890ece08df31aa8e2d0150594c6c07 [85/93] rpdfs: update inode code
config: hexagon-randconfig-002-20260802 (https://download.01.org/0day-ci/archive/20260802/202608020604.HX4Ue3Tz-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260802/202608020604.HX4Ue3Tz-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608020604.HX4Ue3Tz-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> fs/rpdfs/mkfs.c:23:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
23 | if (IS_ERR(folio)) {
| ^~~~~~~~~~~~~
fs/rpdfs/mkfs.c:46:9: note: uninitialized use occurs here
46 | return ret;
| ^~~
fs/rpdfs/mkfs.c:23:2: note: remove the 'if' if its condition is always true
23 | if (IS_ERR(folio)) {
| ^~~~~~~~~~~~~~~~~~
fs/rpdfs/mkfs.c:20:9: note: initialize the variable 'ret' to silence this warning
20 | int ret;
| ^
| = 0
1 warning generated.
--
>> fs/rpdfs/aops.c:163:66: warning: variable 'ret' is uninitialized when used here [-Wuninitialized]
163 | rpdfs_prd("key "RBKF" err %u ret %d", RBKA(&wr->key), wr->err, ret);
| ^~~
fs/rpdfs/pr.h:36:25: note: expanded from macro 'rpdfs_prd'
36 | _rpdfs_pr_debug(fmt, ##args)
| ^~~~
fs/rpdfs/pr.h:33:58: note: expanded from macro '_rpdfs_pr_debug'
33 | pr_debug("rpdfs: %s:%u: "fmt"\n", __func__, __LINE__, ##args); \
| ^~~~
include/linux/printk.h:631:26: note: expanded from macro 'pr_debug'
631 | dynamic_pr_debug(fmt, ##__VA_ARGS__)
| ^~~~~~~~~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/dynamic_debug.h:250:59: note: expanded from macro '_dynamic_func_call'
250 | _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:248:65: note: expanded from macro '_dynamic_func_call_cls'
248 | __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:224:15: note: expanded from macro '__dynamic_func_call_cls'
224 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
fs/rpdfs/aops.c:159:9: note: initialize the variable 'ret' to silence this warning
159 | int ret;
| ^
| = 0
1 warning generated.
--
>> fs/rpdfs/ehtable.c:259:2: warning: variable 'del' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized]
259 | for_each_entry(ehb, iargs->hash, ent, pl) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/rpdfs/ehtable.c:148:2: note: expanded from macro 'for_each_entry'
148 | __for_each_entry(ehb, base_entry(ehb, hash), ent, pl)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/rpdfs/ehtable.c:144:7: note: expanded from macro '__for_each_entry'
144 | (ent = &ehb->entries[(ent - ehb->entries) & RPDFS_EHTABLE_ENTRIES_MASK]); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/rpdfs/ehtable.c:275:31: note: uninitialized use occurs here
275 | for_each_entry_continue(ehb, del, ent, pl) {
| ^~~
fs/rpdfs/ehtable.c:151:25: note: expanded from macro 'for_each_entry_continue'
151 | __for_each_entry(ehb, (cont + 1), ent, pl)
| ^~~~
fs/rpdfs/ehtable.c:143:13: note: expanded from macro '__for_each_entry'
143 | for (ent = INIT, pl = 0; \
| ^~~~
fs/rpdfs/ehtable.c:259:2: note: remove the condition if it is always true
259 | for_each_entry(ehb, iargs->hash, ent, pl) {
| ^
fs/rpdfs/ehtable.c:148:2: note: expanded from macro 'for_each_entry'
148 | __for_each_entry(ehb, base_entry(ehb, hash), ent, pl)
| ^
fs/rpdfs/ehtable.c:144:7: note: expanded from macro '__for_each_entry'
144 | (ent = &ehb->entries[(ent - ehb->entries) & RPDFS_EHTABLE_ENTRIES_MASK]); \
| ^
fs/rpdfs/ehtable.c:254:33: note: initialize the variable 'del' to silence this warning
254 | struct rpdfs_ehtable_entry *del;
| ^
| = NULL
1 warning generated.
--
>> fs/rpdfs/meta.c:184:6: warning: variable 'folio' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
184 | if (WARN_ON_ONCE(mgf == 0 || (mgf & MGF__INVALID)) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
185 | WARN_ON_ONCE((mgf & MGF_NEW) && (mgf & ~MGF_NEW)) ||
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
186 | WARN_ON_ONCE((mgf & MGF_READ) && (mgf & MGF_WRITE))) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bug.h:148:2: note: expanded from macro 'WARN_ON_ONCE'
148 | DO_ONCE_LITE_IF(condition, WARN_ON, 1)
| ^
include/linux/once_lite.h:27:2: note: expanded from macro 'DO_ONCE_LITE_IF'
27 | ({ \
| ^
fs/rpdfs/meta.c:226:9: note: uninitialized use occurs here
226 | return folio;
| ^~~~~
fs/rpdfs/meta.c:184:2: note: remove the 'if' if its condition is always false
184 | if (WARN_ON_ONCE(mgf == 0 || (mgf & MGF__INVALID)) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
185 | WARN_ON_ONCE((mgf & MGF_NEW) && (mgf & ~MGF_NEW)) ||
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
186 | WARN_ON_ONCE((mgf & MGF_READ) && (mgf & MGF_WRITE))) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
187 | ret = -EINVAL;
| ~~~~~~~~~~~~~~
188 | goto out;
| ~~~~~~~~~
189 | }
| ~
>> fs/rpdfs/meta.c:184:6: warning: variable 'folio' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized]
184 | if (WARN_ON_ONCE(mgf == 0 || (mgf & MGF__INVALID)) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
185 | WARN_ON_ONCE((mgf & MGF_NEW) && (mgf & ~MGF_NEW)) ||
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bug.h:148:2: note: expanded from macro 'WARN_ON_ONCE'
148 | DO_ONCE_LITE_IF(condition, WARN_ON, 1)
| ^
include/linux/once_lite.h:27:2: note: expanded from macro 'DO_ONCE_LITE_IF'
27 | ({ \
| ^
fs/rpdfs/meta.c:226:9: note: uninitialized use occurs here
226 | return folio;
| ^~~~~
fs/rpdfs/meta.c:184:6: note: remove the '||' if its condition is always false
184 | if (WARN_ON_ONCE(mgf == 0 || (mgf & MGF__INVALID)) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
185 | WARN_ON_ONCE((mgf & MGF_NEW) && (mgf & ~MGF_NEW)) ||
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bug.h:148:2: note: expanded from macro 'WARN_ON_ONCE'
148 | DO_ONCE_LITE_IF(condition, WARN_ON, 1)
| ^
include/linux/once_lite.h:27:2: note: expanded from macro 'DO_ONCE_LITE_IF'
27 | ({ \
| ^
>> fs/rpdfs/meta.c:184:6: warning: variable 'folio' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized]
184 | if (WARN_ON_ONCE(mgf == 0 || (mgf & MGF__INVALID)) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bug.h:148:2: note: expanded from macro 'WARN_ON_ONCE'
148 | DO_ONCE_LITE_IF(condition, WARN_ON, 1)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/once_lite.h:27:2: note: expanded from macro 'DO_ONCE_LITE_IF'
27 | ({ \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
28 | bool __ret_do_once = !!(condition); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
29 | \
| ~
30 | if (__ONCE_LITE_IF(__ret_do_once)) \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
31 | func(__VA_ARGS__); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
32 | \
| ~
33 | unlikely(__ret_do_once); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
34 | })
| ~~
fs/rpdfs/meta.c:226:9: note: uninitialized use occurs here
226 | return folio;
| ^~~~~
fs/rpdfs/meta.c:184:6: note: remove the '||' if its condition is always false
184 | if (WARN_ON_ONCE(mgf == 0 || (mgf & MGF__INVALID)) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bug.h:148:2: note: expanded from macro 'WARN_ON_ONCE'
148 | DO_ONCE_LITE_IF(condition, WARN_ON, 1)
| ^
include/linux/once_lite.h:27:2: note: expanded from macro 'DO_ONCE_LITE_IF'
27 | ({ \
| ^
fs/rpdfs/meta.c:178:21: note: initialize the variable 'folio' to silence this warning
178 | struct folio *folio;
| ^
| = NULL
3 warnings generated.
vim +23 fs/rpdfs/mkfs.c
e8e76da7ed715ef Zach Brown 2025-08-13 11
e8e76da7ed715ef Zach Brown 2025-08-13 12 /*
e8e76da7ed715ef Zach Brown 2025-08-13 13 * This is a hack while we're bringing the system up.
e8e76da7ed715ef Zach Brown 2025-08-13 14 */
e8e76da7ed715ef Zach Brown 2025-08-13 15
ca29d34b2ba425e Zach Brown 2026-07-09 16 int rpdfs_mkfs_root_inode(struct inode *inode)
e8e76da7ed715ef Zach Brown 2025-08-13 17 {
e8e76da7ed715ef Zach Brown 2025-08-13 18 struct rpdfs_inode *rinode;
ca29d34b2ba425e Zach Brown 2026-07-09 19 struct folio *folio;
e8e76da7ed715ef Zach Brown 2025-08-13 20 int ret;
e8e76da7ed715ef Zach Brown 2025-08-13 21
ca29d34b2ba425e Zach Brown 2026-07-09 22 folio = rpdfs_meta_get_folio(inode, MGF_NEW, RPDFS_BLOCK_KEY_TYPE_INODE, 0);
ca29d34b2ba425e Zach Brown 2026-07-09 @23 if (IS_ERR(folio)) {
:::::: The code at line 23 was first introduced by commit
:::::: ca29d34b2ba425ec26d7b54856f8ba86cb233d41 rpdfs: update mkfs
:::::: TO: Zach Brown <zab@zabbo.net>
:::::: CC: Zach Brown <zab@zabbo.net>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-08-01 22:51 UTC|newest]
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