linux-kernel - Re: [PATCH 1/5] mm/vma: move brk() internals to mm/vma.c

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Message-ID: <202412041907.3DXYQrz6-lkp@intel.com>
Date: Wed, 4 Dec 2024 19:55:16 +0800
From: kernel test robot <lkp@...el.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>, Jann Horn <jannh@...gle.com>,
	Eric Biederman <ebiederm@...ssion.com>, Kees Cook <kees@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] mm/vma: move brk() internals to mm/vma.c

Hi Lorenzo,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/mm-vma-move-brk-internals-to-mm-vma-c/20241204-115150
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/3d24b9e67bb0261539ca921d1188a10a1b4d4357.1733248985.git.lorenzo.stoakes%40oracle.com
patch subject: [PATCH 1/5] mm/vma: move brk() internals to mm/vma.c
config: mips-allnoconfig (https://download.01.org/0day-ci/archive/20241204/202412041907.3DXYQrz6-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241204/202412041907.3DXYQrz6-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/202412041907.3DXYQrz6-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/mips/include/asm/cacheflush.h:13,
                    from include/linux/cacheflush.h:5,
                    from include/linux/highmem.h:8,
                    from include/linux/bvec.h:10,
                    from include/linux/blk_types.h:10,
                    from include/linux/writeback.h:13,
                    from include/linux/backing-dev.h:16,
                    from mm/vma_internal.h:12,
                    from mm/vma.c:7:
   mm/vma.c: In function 'do_brk_flags':
>> include/linux/mm.h:450:44: error: 'READ_IMPLIES_EXEC' undeclared (first use in this function)
     450 | #define TASK_EXEC ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0)
         |                                            ^~~~~~~~~~~~~~~~~
   include/linux/mm.h:453:55: note: in expansion of macro 'TASK_EXEC'
     453 | #define VM_DATA_FLAGS_TSK_EXEC  (VM_READ | VM_WRITE | TASK_EXEC | \
         |                                                       ^~~~~~~~~
   arch/mips/include/asm/page.h:215:33: note: in expansion of macro 'VM_DATA_FLAGS_TSK_EXEC'
     215 | #define VM_DATA_DEFAULT_FLAGS   VM_DATA_FLAGS_TSK_EXEC
         |                                 ^~~~~~~~~~~~~~~~~~~~~~
   mm/vma.c:2503:18: note: in expansion of macro 'VM_DATA_DEFAULT_FLAGS'
    2503 |         flags |= VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
         |                  ^~~~~~~~~~~~~~~~~~~~~
   include/linux/mm.h:450:44: note: each undeclared identifier is reported only once for each function it appears in
     450 | #define TASK_EXEC ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0)
         |                                            ^~~~~~~~~~~~~~~~~
   include/linux/mm.h:453:55: note: in expansion of macro 'TASK_EXEC'
     453 | #define VM_DATA_FLAGS_TSK_EXEC  (VM_READ | VM_WRITE | TASK_EXEC | \
         |                                                       ^~~~~~~~~
   arch/mips/include/asm/page.h:215:33: note: in expansion of macro 'VM_DATA_FLAGS_TSK_EXEC'
     215 | #define VM_DATA_DEFAULT_FLAGS   VM_DATA_FLAGS_TSK_EXEC
         |                                 ^~~~~~~~~~~~~~~~~~~~~~
   mm/vma.c:2503:18: note: in expansion of macro 'VM_DATA_DEFAULT_FLAGS'
    2503 |         flags |= VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
         |                  ^~~~~~~~~~~~~~~~~~~~~


vim +/READ_IMPLIES_EXEC +450 include/linux/mm.h

a8bef8ff6ea15fa Mel Gorman        2010-05-24  449  
c62da0c35d58518 Anshuman Khandual 2020-04-10 @450  #define TASK_EXEC ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0)
c62da0c35d58518 Anshuman Khandual 2020-04-10  451  

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