arch/parisc/include/asm/spinlock.h:143:9: sparse: sparse: context imbalance in 'migrate_write_unlock' - unexpected unlock

arch/parisc/include/asm/spinlock.h:143:9: sparse: sparse: context imbalance in 'migrate_write_unlock' - unexpected unlock

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 5653 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Nicholas Piggin <npiggin@gmail.com>
CC: Peter Zijlstra <peterz@infradead.org>
CC: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
CC: Thomas Gleixner <tglx@linutronix.de>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9c87c9f41245baa3fc4716cf39141439cf405b01
commit: 044d0d6de9f50192f9697583504a382347ee95ca lockdep: Only trace IRQ edges
date:   3 months ago
:::::: branch date: 23 hours ago
:::::: commit date: 3 months ago
config: parisc-randconfig-s031-20201117 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-107-gaf3512a6-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=044d0d6de9f50192f9697583504a382347ee95ca
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 044d0d6de9f50192f9697583504a382347ee95ca
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=parisc 

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


"sparse warnings: (new ones prefixed by >>)"
   mm/zsmalloc.c:1348:9: sparse: sparse: context imbalance in 'zs_map_object' - wrong count at exit
   mm/zsmalloc.c:1383:9: sparse: sparse: context imbalance in 'zs_unmap_object' - unexpected unlock
   mm/zsmalloc.c:889:19: sparse: sparse: context imbalance in 'find_alloced_obj' - different lock contexts for basic block
   mm/zsmalloc.c:1719:25: sparse: sparse: context imbalance in 'migrate_zspage' - unexpected unlock
   mm/zsmalloc.c:1848:13: sparse: sparse: context imbalance in 'migrate_write_lock' - wrong count at exit
   mm/zsmalloc.c: note: in included file (through arch/parisc/include/asm/atomic.h, include/linux/atomic.h, arch/parisc/include/asm/bitops.h, ...):
>> arch/parisc/include/asm/spinlock.h:143:9: sparse: sparse: context imbalance in 'migrate_write_unlock' - unexpected unlock
   mm/zsmalloc.c:2085:9: sparse: sparse: context imbalance in 'zs_page_migrate' - different lock contexts for basic block
--
   fs/btrfs/ctree.c:129:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/btrfs/ctree.c:129:22: sparse:    struct extent_buffer [noderef] __rcu *
   fs/btrfs/ctree.c:129:22: sparse:    struct extent_buffer *
   fs/btrfs/ctree.c:1085:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/btrfs/ctree.c:1085:17: sparse:    struct extent_buffer [noderef] __rcu *
   fs/btrfs/ctree.c:1085:17: sparse:    struct extent_buffer *
   fs/btrfs/ctree.c:1863:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/btrfs/ctree.c:1863:17: sparse:    struct extent_buffer [noderef] __rcu *
   fs/btrfs/ctree.c:1863:17: sparse:    struct extent_buffer *
   fs/btrfs/ctree.c:3349:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/btrfs/ctree.c:3349:9: sparse:    struct extent_buffer [noderef] __rcu *
   fs/btrfs/ctree.c:3349:9: sparse:    struct extent_buffer *
   fs/btrfs/ctree.c: note: in included file (through arch/parisc/include/asm/atomic.h, include/linux/atomic.h, arch/parisc/include/asm/bitops.h, ...):
>> arch/parisc/include/asm/spinlock.h:143:9: sparse: sparse: context imbalance in 'tree_mod_log_insert_move' - unexpected unlock
>> arch/parisc/include/asm/spinlock.h:143:9: sparse: sparse: context imbalance in 'tree_mod_log_eb_copy' - unexpected unlock

vim +/migrate_write_unlock +143 arch/parisc/include/asm/spinlock.h

^1da177e4c3f415 include/asm-parisc/spinlock.h      Linus Torvalds 2005-04-16  134  
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  135  static inline void arch_write_unlock(arch_rwlock_t *rw)
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  136  {
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  137  	unsigned long flags;
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  138  
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  139  	local_irq_save(flags);
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  140  	arch_spin_lock(&(rw->lock_mutex));
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  141  	rw->counter = __ARCH_RW_LOCK_UNLOCKED__;
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05  142  	arch_spin_unlock(&(rw->lock_mutex));
fbdc8f0f4891df7 arch/parisc/include/asm/spinlock.h Helge Deller   2020-04-05 @143  	local_irq_restore(flags);
^1da177e4c3f415 include/asm-parisc/spinlock.h      Linus Torvalds 2005-04-16  144  }
^1da177e4c3f415 include/asm-parisc/spinlock.h      Linus Torvalds 2005-04-16  145  

:::::: The code at line 143 was first introduced by commit
:::::: fbdc8f0f4891df7b5eb643ec0a509a4ac7dcfc2e parisc: Rework arch_rw locking functions

:::::: TO: Helge Deller <deller@gmx.de>
:::::: CC: Helge Deller <deller@gmx.de>

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 26292 bytes --]