linux-kernel - Re: [PATCH] mm, vmalloc: properly track vmalloc users

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Message-ID: <201705030940.1ufJ0yFy%fengguang.wu@intel.com>
Date:   Wed, 3 May 2017 09:29:21 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>, linux-mm@...ck.org,
        LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: Re: [PATCH] mm, vmalloc: properly track vmalloc users

Hi Michal,

[auto build test ERROR on mmotm/master]
[also build test ERROR on next-20170502]
[cannot apply to v4.11]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Michal-Hocko/mm-vmalloc-properly-track-vmalloc-users/20170503-065022
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: m68k-multi_defconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=m68k 

All errors (new ones prefixed by >>):

   In file included from arch/m68k/include/asm/pgtable_mm.h:147:0,
                    from arch/m68k/include/asm/pgtable.h:4,
                    from include/linux/vmalloc.h:9,
                    from fs/nfsd/nfscache.c:12:
   arch/m68k/include/asm/motorola_pgtable.h: In function 'pgd_offset':
>> arch/m68k/include/asm/motorola_pgtable.h:198:11: error: dereferencing pointer to incomplete type
     return mm->pgd + pgd_index(address);
              ^

vim +198 arch/m68k/include/asm/motorola_pgtable.h

^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  182  }
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  183  static inline pte_t pte_mkcache(pte_t pte)
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  184  {
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  185  	pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_supervisor_cachemode;
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  186  	return pte;
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  187  }
7e675137 include/asm-m68k/motorola_pgtable.h Nick Piggin        2008-04-28  188  static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  189  
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  190  #define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  191  
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  192  #define pgd_index(address)     ((address) >> PGDIR_SHIFT)
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  193  
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  194  /* to find an entry in a page-table-directory */
5b808a59 include/asm-m68k/motorola_pgtable.h Geert Uytterhoeven 2008-02-07  195  static inline pgd_t *pgd_offset(const struct mm_struct *mm,
5b808a59 include/asm-m68k/motorola_pgtable.h Geert Uytterhoeven 2008-02-07  196  				unsigned long address)
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  197  {
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16 @198  	return mm->pgd + pgd_index(address);
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  199  }
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  200  
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  201  #define swapper_pg_dir kernel_pg_dir
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  202  extern pgd_t kernel_pg_dir[128];
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  203  
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  204  static inline pgd_t *pgd_offset_k(unsigned long address)
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  205  {
^1da177e include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  206  	return kernel_pg_dir + (address >> PGDIR_SHIFT);

:::::: The code at line 198 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

---
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