linux-kernel - arch/nios2/include/asm/irqflags.h:12:9: sparse: sparse: context imbalance in 'move_pages_to_lru'

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Date:   Mon, 15 Jun 2020 18:40:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Subject: arch/nios2/include/asm/irqflags.h:12:9: sparse: sparse: context
 imbalance in 'move_pages_to_lru' - unexpected unlock

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b3a9e3b9622ae10064826dccb4f7a52bd88c7407
commit: 80591e61a0f7e88deaada69844e4a31280c4a38f kbuild: tell sparse about the $ARCH
date:   7 months ago
config: nios2-randconfig-s032-20200615 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-rc1-3-g55607964-dirty
        git checkout 80591e61a0f7e88deaada69844e4a31280c4a38f
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=nios2 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> arch/nios2/include/asm/irqflags.h:12:9: sparse: sparse: context imbalance in 'move_pages_to_lru' - unexpected unlock
>> arch/nios2/include/asm/irqflags.h:12:9: sparse: sparse: context imbalance in 'check_move_unevictable_pages' - unexpected unlock
--
>> arch/nios2/include/asm/irqflags.h:12:9: sparse: sparse: context imbalance in 'shadow_lru_isolate' - wrong count at exit

vim +/move_pages_to_lru +12 arch/nios2/include/asm/irqflags.h

f27ffc751ca5d2 Ley Foon Tan 2014-11-06   9  
f27ffc751ca5d2 Ley Foon Tan 2014-11-06  10  static inline unsigned long arch_local_save_flags(void)
f27ffc751ca5d2 Ley Foon Tan 2014-11-06  11  {
f27ffc751ca5d2 Ley Foon Tan 2014-11-06 @12  	return RDCTL(CTL_STATUS);
f27ffc751ca5d2 Ley Foon Tan 2014-11-06  13  }
f27ffc751ca5d2 Ley Foon Tan 2014-11-06  14  

:::::: The code at line 12 was first introduced by commit
:::::: f27ffc751ca5d216a347084996c70452a4e185a4 nios2: Interrupt handling

:::::: TO: Ley Foon Tan <lftan@...era.com>
:::::: CC: Ley Foon Tan <lftan@...era.com>

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

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