[block:for-5.5/io_uring-wq 14/14] include/linux/spinlock.h:378:9: sparse: sparse: context imbalance in 'io_wqe_worker' - unexpected unlock

[block:for-5.5/io_uring-wq 14/14] include/linux/spinlock.h:378:9: sparse: sparse: context imbalance in 'io_wqe_worker' - unexpected unlock

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-5.5/io_uring-wq
head:   25fba7014fd1e953222bba0dad26694c9b2646c1
commit: 25fba7014fd1e953222bba0dad26694c9b2646c1 [14/14] io_uring: replace workqueue with io-wq
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-dirty
        git checkout 25fba7014fd1e953222bba0dad26694c9b2646c1
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

   fs/io-wq.c:186:13: sparse: sparse: context imbalance in '__io_worker_idle' - different lock contexts for basic block
>> include/linux/spinlock.h:378:9: sparse: sparse: context imbalance in 'io_wqe_worker' - unexpected unlock

vim +/io_wqe_worker +378 include/linux/spinlock.h

c2f21ce2e31286 Thomas Gleixner 2009-12-02  375  
3490565b633c70 Denys Vlasenko  2015-07-13  376  static __always_inline void spin_unlock(spinlock_t *lock)
c2f21ce2e31286 Thomas Gleixner 2009-12-02  377  {
c2f21ce2e31286 Thomas Gleixner 2009-12-02 @378  	raw_spin_unlock(&lock->rlock);
c2f21ce2e31286 Thomas Gleixner 2009-12-02  379  }
c2f21ce2e31286 Thomas Gleixner 2009-12-02  380  

:::::: The code at line 378 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock

:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

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