[tip:locking/core 20/40] include/linux/rwsem.h:262 class_rwsem_read_try_constructor() warn: passing zero to 'ERR_PTR'

[tip:locking/core 20/40] include/linux/rwsem.h:262 class_rwsem_read_try_constructor() warn: passing zero to 'ERR_PTR'

[kernel test robot]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
CC: x86@kernel.org
TO: Marco Elver <elver@google.com>
CC: Peter Zijlstra <peterz@infradead.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
head:   c10d860e0baae0853773dc90a94b26adc5687380
commit: e4fd3be884cf33a42c5bcde087b0722a5b8f25ca [20/40] locking/rwsem: Support Clang's context analysis
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
config: openrisc-randconfig-r073-20260107 (https://download.01.org/0day-ci/archive/20260108/202601080002.GfL3Vts3-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 15.1.0

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/202601080002.GfL3Vts3-lkp@intel.com/

New smatch warnings:
include/linux/rwsem.h:262 class_rwsem_read_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/rwsem.h:273 class_rwsem_write_try_constructor() warn: passing zero to 'ERR_PTR'

Old smatch warnings:
lib/test_context-analysis.c:96 test_raw_spinlock_trylock_extra() warn: mixing irq and irqsave
include/linux/spinlock.h:556 class_raw_spinlock_try_constructor() warn: passing zero to 'ERR_PTR'
lib/test_context-analysis.c:120 test_spinlock_trylock_extra() warn: mixing irq and irqsave
include/linux/spinlock.h:604 class_spinlock_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/mutex.h:255 class_mutex_try_constructor() warn: passing zero to 'ERR_PTR'

vim +/ERR_PTR +262 include/linux/rwsem.h

e4fd3be884cf33 Marco Elver 2025-12-19  260  
e4fd3be884cf33 Marco Elver 2025-12-19  261  DEFINE_LOCK_GUARD_1(rwsem_read, struct rw_semaphore, down_read(_T->lock), up_read(_T->lock))
e4fd3be884cf33 Marco Elver 2025-12-19 @262  DEFINE_LOCK_GUARD_1_COND(rwsem_read, _try, down_read_trylock(_T->lock))
e4fd3be884cf33 Marco Elver 2025-12-19  263  DEFINE_LOCK_GUARD_1_COND(rwsem_read, _intr, down_read_interruptible(_T->lock), _RET == 0)
e4fd3be884cf33 Marco Elver 2025-12-19  264  
e4fd3be884cf33 Marco Elver 2025-12-19  265  DECLARE_LOCK_GUARD_1_ATTRS(rwsem_read, __acquires_shared(_T), __releases_shared(*(struct rw_semaphore **)_T))
e4fd3be884cf33 Marco Elver 2025-12-19  266  #define class_rwsem_read_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(rwsem_read, _T)
e4fd3be884cf33 Marco Elver 2025-12-19  267  DECLARE_LOCK_GUARD_1_ATTRS(rwsem_read_try, __acquires_shared(_T), __releases_shared(*(struct rw_semaphore **)_T))
e4fd3be884cf33 Marco Elver 2025-12-19  268  #define class_rwsem_read_try_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(rwsem_read_try, _T)
e4fd3be884cf33 Marco Elver 2025-12-19  269  DECLARE_LOCK_GUARD_1_ATTRS(rwsem_read_intr, __acquires_shared(_T), __releases_shared(*(struct rw_semaphore **)_T))
e4fd3be884cf33 Marco Elver 2025-12-19  270  #define class_rwsem_read_intr_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(rwsem_read_intr, _T)
e4fd3be884cf33 Marco Elver 2025-12-19  271  
e4fd3be884cf33 Marco Elver 2025-12-19  272  DEFINE_LOCK_GUARD_1(rwsem_write, struct rw_semaphore, down_write(_T->lock), up_write(_T->lock))
e4fd3be884cf33 Marco Elver 2025-12-19 @273  DEFINE_LOCK_GUARD_1_COND(rwsem_write, _try, down_write_trylock(_T->lock))
e4fd3be884cf33 Marco Elver 2025-12-19  274  DEFINE_LOCK_GUARD_1_COND(rwsem_write, _kill, down_write_killable(_T->lock), _RET == 0)
e4fd3be884cf33 Marco Elver 2025-12-19  275  

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