arch/mips/include/asm/irqflags.h:101:9: sparse: sparse: context imbalance in '__split_huge_page'

* arch/mips/include/asm/irqflags.h:101:9: sparse: sparse: context imbalance in '__split_huge_page' - different lock contexts for basic block
@ 2021-07-26 15:13 kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-07-26 15:13 UTC (permalink / raw)
  To: kbuild

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Alex Shi <alex.shi@linux.alibaba.com>
CC: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux Memory Management List <linux-mm@kvack.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ff1176468d368232b684f75e82563369208bc371
commit: b6769834aac1d467fa1c71277d15688efcbb4d76 mm/thp: narrow lru locking
date:   7 months ago
:::::: branch date: 17 hours ago
:::::: commit date: 7 months ago
config: mips-randconfig-s031-20210726 (attached as .config)
compiler: mips-linux-gcc (GCC) 10.3.0
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: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b6769834aac1d467fa1c71277d15688efcbb4d76
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout b6769834aac1d467fa1c71277d15688efcbb4d76
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=mips SHELL=/bin/bash

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 >>)
   command-line: note: in included file:
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
   builtin:0:0: sparse: this was the original definition
   mm/huge_memory.c:1640:20: sparse: sparse: context imbalance in 'madvise_free_huge_pmd' - unexpected unlock
   mm/huge_memory.c:1677:28: sparse: sparse: context imbalance in 'zap_huge_pmd' - unexpected unlock
   mm/huge_memory.c:1787:28: sparse: sparse: context imbalance in 'move_huge_pmd' - unexpected unlock
   mm/huge_memory.c:1891:20: sparse: sparse: context imbalance in 'change_huge_pmd' - unexpected unlock
   mm/huge_memory.c:1901:12: sparse: sparse: context imbalance in '__pmd_trans_huge_lock' - wrong count at exit
   mm/huge_memory.c: note: in included file (through include/linux/irqflags.h, arch/mips/include/asm/atomic.h, include/linux/atomic.h, ...):
>> arch/mips/include/asm/irqflags.h:101:9: sparse: sparse: context imbalance in '__split_huge_page' - different lock contexts for basic block
   arch/mips/include/asm/irqflags.h:101:9: sparse: sparse: context imbalance in 'split_huge_page_to_list' - different lock contexts for basic block

vim +/__split_huge_page +101 arch/mips/include/asm/irqflags.h

02b849f7613003 Ralf Baechle 2013-02-08   98  
02b849f7613003 Ralf Baechle 2013-02-08   99  static inline void arch_local_irq_enable(void)
02b849f7613003 Ralf Baechle 2013-02-08  100  {
02b849f7613003 Ralf Baechle 2013-02-08 @101  	__asm__ __volatile__(
e97c5b609880d9 Jim Quinlan  2012-09-06  102  	"	.set	push						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  103  	"	.set	reorder						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  104  	"	.set	noat						\n"
ba9196d2e005a0 Jiaxun Yang  2020-01-13  105  #if defined(CONFIG_CPU_HAS_DIEI)
e97c5b609880d9 Jim Quinlan  2012-09-06  106  	"	ei							\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  107  #else
e97c5b609880d9 Jim Quinlan  2012-09-06  108  	"	mfc0	$1,$12						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  109  	"	ori	$1,0x1f						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  110  	"	xori	$1,0x1e						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  111  	"	mtc0	$1,$12						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  112  #endif
02b849f7613003 Ralf Baechle 2013-02-08  113  	"	" __stringify(__irq_enable_hazard) "			\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  114  	"	.set	pop						\n"
e97c5b609880d9 Jim Quinlan  2012-09-06  115  	: /* no outputs */
e97c5b609880d9 Jim Quinlan  2012-09-06  116  	: /* no inputs */
e97c5b609880d9 Jim Quinlan  2012-09-06  117  	: "memory");
e97c5b609880d9 Jim Quinlan  2012-09-06  118  }
e97c5b609880d9 Jim Quinlan  2012-09-06  119  

:::::: The code at line 101 was first introduced by commit
:::::: 02b849f7613003fe5f9e58bf233d49b0ebd4a5e8 MIPS: Get rid of the use of .macro in C code.

:::::: TO: Ralf Baechle <ralf@linux-mips.org>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>

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

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