From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: [melver:cap-analysis/dev 23/35] lib/test_capability-analysis.c:125 test_spinlock_trylock_extra() error: uninitialized symbol 'flags'.
Date: Wed, 24 Sep 2025 11:52:50 +0800 [thread overview]
Message-ID: <202509241125.8lkyg6o7-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: elver@google.com
tree: https://git.kernel.org/pub/scm/linux/kernel/git/melver/linux.git cap-analysis/dev
head: b57fd8af63116c56536eb40f04dbe4f2206ec4ed
commit: 32b884d94862a5295719faf9e1c3b5eef162cca4 [23/35] compiler-capability-analysis: Remove __cond_lock() function-like helper
:::::: branch date: 6 days ago
:::::: commit date: 6 days ago
config: sparc64-randconfig-r072-20250922 (https://download.01.org/0day-ci/archive/20250924/202509241125.8lkyg6o7-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.5.0
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@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202509241125.8lkyg6o7-lkp@intel.com/
New smatch warnings:
lib/test_capability-analysis.c:125 test_spinlock_trylock_extra() error: uninitialized symbol 'flags'.
Old smatch warnings:
lib/test_capability-analysis.c:101 test_raw_spinlock_trylock_extra() warn: mixing irq and irqsave
include/linux/spinlock.h:542 class_raw_spinlock_try_constructor() warn: passing zero to 'ERR_PTR'
lib/test_capability-analysis.c:125 test_spinlock_trylock_extra() warn: mixing irq and irqsave
include/linux/spinlock.h:581 class_spinlock_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/mutex.h:230 class_mutex_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/rwsem.h:262 class_rwsem_read_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/rwsem.h:270 class_rwsem_write_try_constructor() warn: passing zero to 'ERR_PTR'
vim +/flags +125 lib/test_capability-analysis.c
821a2ecb55c76ae Marco Elver 2025-01-23 107
821a2ecb55c76ae Marco Elver 2025-01-23 108 TEST_SPINLOCK_COMMON(spinlock,
821a2ecb55c76ae Marco Elver 2025-01-23 109 spinlock_t,
821a2ecb55c76ae Marco Elver 2025-01-23 110 spin_lock_init,
821a2ecb55c76ae Marco Elver 2025-01-23 111 spin_lock,
821a2ecb55c76ae Marco Elver 2025-01-23 112 spin_unlock,
821a2ecb55c76ae Marco Elver 2025-01-23 113 spin_trylock,
821a2ecb55c76ae Marco Elver 2025-01-23 114 TEST_OP_RW);
821a2ecb55c76ae Marco Elver 2025-01-23 115 static void __used test_spinlock_trylock_extra(struct test_spinlock_data *d)
821a2ecb55c76ae Marco Elver 2025-01-23 116 {
821a2ecb55c76ae Marco Elver 2025-01-23 117 unsigned long flags;
821a2ecb55c76ae Marco Elver 2025-01-23 118
821a2ecb55c76ae Marco Elver 2025-01-23 119 if (spin_trylock_irq(&d->lock)) {
821a2ecb55c76ae Marco Elver 2025-01-23 120 d->counter++;
821a2ecb55c76ae Marco Elver 2025-01-23 121 spin_unlock_irq(&d->lock);
821a2ecb55c76ae Marco Elver 2025-01-23 122 }
821a2ecb55c76ae Marco Elver 2025-01-23 123 if (spin_trylock_irqsave(&d->lock, flags)) {
821a2ecb55c76ae Marco Elver 2025-01-23 124 d->counter++;
821a2ecb55c76ae Marco Elver 2025-01-23 @125 spin_unlock_irqrestore(&d->lock, flags);
821a2ecb55c76ae Marco Elver 2025-01-23 126 }
821a2ecb55c76ae Marco Elver 2025-01-23 127 scoped_cond_guard(spinlock_try, return, &d->lock) {
821a2ecb55c76ae Marco Elver 2025-01-23 128 d->counter++;
821a2ecb55c76ae Marco Elver 2025-01-23 129 }
821a2ecb55c76ae Marco Elver 2025-01-23 130 }
821a2ecb55c76ae Marco Elver 2025-01-23 131
:::::: The code at line 125 was first introduced by commit
:::::: 821a2ecb55c76aebb2a5fc53c7a49c2bc21a59af locking/rwlock, spinlock: Support Clang's capability analysis
:::::: TO: Marco Elver <elver@google.com>
:::::: CC: Marco Elver <elver@google.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2025-09-24 3:54 UTC|newest]
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