linux-kernel - [linux-next:master 12548/12775] mm/hugetlb.c:6835:6: sparse: sparse: symbol '__hugetlb_vma_unlock_write_put' was not declared. Should it be static?

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Date:   Sat, 8 Oct 2022 05:00:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     kbuild-all@...ts.01.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Muchun Song <songmuchun@...edance.com>,
        linux-kernel@...r.kernel.org
Subject: [linux-next:master 12548/12775] mm/hugetlb.c:6835:6: sparse: sparse:
 symbol '__hugetlb_vma_unlock_write_put' was not declared. Should it be
 static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   082fce125e57cff60687181c97f3a8ee620c38f5
commit: 95b61bfed8291e54f65e1fc836c5f9b49f74068c [12548/12775] hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer
config: x86_64-randconfig-s022
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=95b61bfed8291e54f65e1fc836c5f9b49f74068c
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 95b61bfed8291e54f65e1fc836c5f9b49f74068c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

sparse warnings: (new ones prefixed by >>)
>> mm/hugetlb.c:6835:6: sparse: sparse: symbol '__hugetlb_vma_unlock_write_put' was not declared. Should it be static?
   mm/hugetlb.c:459:12: sparse: sparse: context imbalance in 'allocate_file_region_entries' - wrong count at exit
   mm/hugetlb.c:530:13: sparse: sparse: context imbalance in 'region_add' - wrong count at exit
   mm/hugetlb.c:597:13: sparse: sparse: context imbalance in 'region_chg' - wrong count at exit
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1282:17: sparse: sparse: context imbalance in 'demote_free_huge_page' - unexpected unlock
   mm/hugetlb.c:4969:20: sparse: sparse: context imbalance in 'move_huge_pte' - different lock contexts for basic block
   mm/hugetlb.c:5340:17: sparse: sparse: context imbalance in 'hugetlb_wp' - unexpected unlock
   mm/hugetlb.c:6221:25: sparse: sparse: context imbalance in 'follow_hugetlb_page' - different lock contexts for basic block

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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