linux-kernel - arch/riscv/mm/kasan_init.c:28:7: sparse: sparse: symbol 'tmp_pud' was not declared. Should it be static?

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Date:   Wed, 28 Jun 2023 22:45:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alexandre Ghiti <alexghiti@...osinc.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Palmer Dabbelt <palmer@...osinc.com>,
        Björn Töpel <bjorn@...osinc.com>
Subject: arch/riscv/mm/kasan_init.c:28:7: sparse: sparse: symbol 'tmp_pud'
 was not declared. Should it be static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6aeadf7896bff4ca230702daba8788455e6b866e
commit: 96f9d4daf745205fe869e9e5ac23199ef11c5448 riscv: Rework kasan population functions
date:   2 months ago
config: riscv-randconfig-r083-20230628 (https://download.01.org/0day-ci/archive/20230628/202306282202.bODptiGE-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230628/202306282202.bODptiGE-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306282202.bODptiGE-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   WARNING: invalid argument to '-march': '_zicbom_zihintpause'
   arch/riscv/mm/kasan_init.c:27:7: sparse: sparse: symbol 'tmp_p4d' was not declared. Should it be static?
>> arch/riscv/mm/kasan_init.c:28:7: sparse: sparse: symbol 'tmp_pud' was not declared. Should it be static?

vim +/tmp_pud +28 arch/riscv/mm/kasan_init.c

    13	
    14	/*
    15	 * Kasan shadow region must lie at a fixed address across sv39, sv48 and sv57
    16	 * which is right before the kernel.
    17	 *
    18	 * For sv39, the region is aligned on PGDIR_SIZE so we only need to populate
    19	 * the page global directory with kasan_early_shadow_pmd.
    20	 *
    21	 * For sv48 and sv57, the region start is aligned on PGDIR_SIZE whereas the end
    22	 * region is not and then we have to go down to the PUD level.
    23	 */
    24	
    25	extern pgd_t early_pg_dir[PTRS_PER_PGD];
    26	pgd_t tmp_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
    27	p4d_t tmp_p4d[PTRS_PER_P4D] __page_aligned_bss;
  > 28	pud_t tmp_pud[PTRS_PER_PUD] __page_aligned_bss;
    29	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki