[akpm-mm:mm-unstable 357/379] mm/vma.h:113:28: error: 'FIRST_USER_ADDRESS' undeclared

[akpm-mm:mm-unstable 357/379] mm/vma.h:113:28: error: 'FIRST_USER_ADDRESS' undeclared

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   b659edec079c90012cf8d05624e312d1062b8b87
commit: ca39aca8db2d78ff82356defba75d14ce78a67b9 [357/379] mm/vma: track start and end for munmap in vma_munmap_struct
config: m68k-allnoconfig (https://download.01.org/0day-ci/archive/20240824/202408242304.1A1fXTgE-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240824/202408242304.1A1fXTgE-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408242304.1A1fXTgE-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/internal.h:22,
                    from mm/filemap.c:52:
   mm/vma.h: In function 'init_vma_munmap':
>> mm/vma.h:113:28: error: 'FIRST_USER_ADDRESS' undeclared (first use in this function)
     113 |         vms->unmap_start = FIRST_USER_ADDRESS;
         |                            ^~~~~~~~~~~~~~~~~~
   mm/vma.h:113:28: note: each undeclared identifier is reported only once for each function it appears in
>> mm/vma.h:114:26: error: 'USER_PGTABLES_CEILING' undeclared (first use in this function)
     114 |         vms->unmap_end = USER_PGTABLES_CEILING;
         |                          ^~~~~~~~~~~~~~~~~~~~~


vim +/FIRST_USER_ADDRESS +113 mm/vma.h

    67	
    68	/* Required for do_brk_flags(). */
    69	void init_vma_prep(struct vma_prepare *vp,
    70			   struct vm_area_struct *vma);
    71	
    72	/* Required for do_brk_flags(). */
    73	void vma_complete(struct vma_prepare *vp,
    74			  struct vma_iterator *vmi, struct mm_struct *mm);
    75	
    76	int vma_expand(struct vma_iterator *vmi, struct vm_area_struct *vma,
    77		       unsigned long start, unsigned long end, pgoff_t pgoff,
    78		       struct vm_area_struct *next);
    79	
    80	int vma_shrink(struct vma_iterator *vmi, struct vm_area_struct *vma,
    81		       unsigned long start, unsigned long end, pgoff_t pgoff);
    82	
    83	/*
    84	 * init_vma_munmap() - Initializer wrapper for vma_munmap_struct
    85	 * @vms: The vma munmap struct
    86	 * @vmi: The vma iterator
    87	 * @vma: The first vm_area_struct to munmap
    88	 * @start: The aligned start address to munmap
    89	 * @end: The aligned end address to munmap
    90	 * @uf: The userfaultfd list_head
    91	 * @unlock: Unlock after the operation.  Only unlocked on success
    92	 */
    93	static inline void init_vma_munmap(struct vma_munmap_struct *vms,
    94			struct vma_iterator *vmi, struct vm_area_struct *vma,
    95			unsigned long start, unsigned long end, struct list_head *uf,
    96			bool unlock)
    97	{
    98		vms->vmi = vmi;
    99		vms->vma = vma;
   100		if (vma) {
   101			vms->mm = vma->vm_mm;
   102			vms->start = start;
   103			vms->end = end;
   104		} else {
   105			vms->mm = NULL;
   106			vms->start = vms->end = 0;
   107		}
   108		vms->unlock = unlock;
   109		vms->uf = uf;
   110		vms->vma_count = 0;
   111		vms->nr_pages = vms->locked_vm = vms->nr_accounted = 0;
   112		vms->exec_vm = vms->stack_vm = vms->data_vm = 0;
 > 113		vms->unmap_start = FIRST_USER_ADDRESS;
 > 114		vms->unmap_end = USER_PGTABLES_CEILING;
   115	}
   116	

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

Re: [akpm-mm:mm-unstable 357/379] mm/vma.h:113:28: error: 'FIRST_USER_ADDRESS' undeclared

[Lorenzo Stoakes]

On Sat, Aug 24, 2024 at 11:14:18PM GMT, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
> head:   b659edec079c90012cf8d05624e312d1062b8b87
> commit: ca39aca8db2d78ff82356defba75d14ce78a67b9 [357/379] mm/vma: track start and end for munmap in vma_munmap_struct
> config: m68k-allnoconfig (https://download.01.org/0day-ci/archive/20240824/202408242304.1A1fXTgE-lkp@intel.com/config)
> compiler: m68k-linux-gcc (GCC) 14.1.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240824/202408242304.1A1fXTgE-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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202408242304.1A1fXTgE-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>    In file included from mm/internal.h:22,
>                     from mm/filemap.c:52:
>    mm/vma.h: In function 'init_vma_munmap':
> >> mm/vma.h:113:28: error: 'FIRST_USER_ADDRESS' undeclared (first use in this function)
>      113 |         vms->unmap_start = FIRST_USER_ADDRESS;
>          |                            ^~~~~~~~~~~~~~~~~~
>    mm/vma.h:113:28: note: each undeclared identifier is reported only once for each function it appears in
> >> mm/vma.h:114:26: error: 'USER_PGTABLES_CEILING' undeclared (first use in this function)
>      114 |         vms->unmap_end = USER_PGTABLES_CEILING;
>          |                          ^~~~~~~~~~~~~~~~~~~~~
>

[snip]

Thanks for the report, see [0] for a fix.

[0]:https://lore.kernel.org/linux-mm/da1a6b2c-f792-432f-b99f-51717dcc8d83@lucifer.local/