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Howlett" To: Lorenzo Stoakes Cc: kernel test robot , Andrew Morton , oe-kbuild-all@lists.linux.dev, Linux Memory Management List , linux-kernel@vger.kernel.org, Suren Baghdasaryan , Pedro Falcato , David Hildenbrand , Vlastimil Babka , Michal Hocko , Jann Horn , shikemeng@huaweicloud.com, kasong@tencent.com, nphamcs@gmail.com, bhe@redhat.com, baohua@kernel.org, chrisl@kernel.org, Matthew Wilcox Subject: Re: [PATCH v2 08/10] mm/vma: Use unmap_desc in exit_mmap() and vms_clear_ptes() Message-ID: Mail-Followup-To: "Liam R. 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owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: * Lorenzo Stoakes [260116 03:27]: > On Fri, Jan 16, 2026 at 10:04:27AM +0800, kernel test robot wrote: > > Hi Liam, > > > > kernel test robot noticed the following build errors: > > > > [auto build test ERROR on akpm-mm/mm-everything] > > [also build test ERROR on linus/master v6.19-rc5 next-20260115] > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > And when submitting patch, we suggest to use '--base' as documented in > > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > > > url: https://github.com/intel-lab-lkp/linux/commits/Liam-R-Howlett/mm-mmap-Move-exit_mmap-trace-point/20260116-023126 > > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > > patch link: https://lore.kernel.org/r/20260115182720.1691130-9-Liam.Howlett%40oracle.com > > patch subject: [PATCH v2 08/10] mm/vma: Use unmap_desc in exit_mmap() and vms_clear_ptes() > > config: m68k-allnoconfig (https://download.01.org/0day-ci/archive/20260116/202601160925.VR8a2hUw-lkp@intel.com/config) > > compiler: m68k-linux-gcc (GCC) 15.2.0 > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260116/202601160925.VR8a2hUw-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 > > | Closes: https://lore.kernel.org/oe-kbuild-all/202601160925.VR8a2hUw-lkp@intel.com/ > > > > All errors (new ones prefixed by >>): > > > > In file included from mm/internal.h:23, > > from mm/filemap.c:54: > > mm/vma.h: In function 'unmap_all_init': > > >> mm/vma.h:175:27: error: 'FIRST_USER_ADDRESS' undeclared (first use in this function) > > 175 | unmap->pg_start = FIRST_USER_ADDRESS; > > | ^~~~~~~~~~~~~~~~~~ > > mm/vma.h:175:27: note: each undeclared identifier is reported only once for each function it appears in > > >> mm/vma.h:176:25: error: 'USER_PGTABLES_CEILING' undeclared (first use in this function) > > 176 | unmap->pg_end = USER_PGTABLES_CEILING; > > | ^~~~~~~~~~~~~~~~~~~~~ > > > > Suspect you need to add: > > #include > > to mm/vma_internal.h. > > Some arches don't define it and that header has: > > #ifndef USER_PGTABLES_CEILING > #define USER_PGTABLES_CEILING 0UL > #endif > > ... > > #ifndef FIRST_USER_ADDRESS > #define FIRST_USER_ADDRESS 0UL > #endif Thanks. This was hit on v1 and I forgot to fix it. > > > > > > vim +/FIRST_USER_ADDRESS +175 mm/vma.h > > > > 169 > > 170 static inline void unmap_all_init(struct unmap_desc *unmap, > > 171 struct vma_iterator *vmi, struct vm_area_struct *vma) > > 172 { > > 173 unmap->mas = &vmi->mas; > > 174 unmap->first = vma; > > > 175 unmap->pg_start = FIRST_USER_ADDRESS; > > > 176 unmap->pg_end = USER_PGTABLES_CEILING; > > 177 unmap->vma_start = 0; > > 178 unmap->vma_end = ULONG_MAX; > > 179 unmap->tree_end = ULONG_MAX; > > 180 unmap->tree_reset = vma->vm_end; > > 181 unmap->mm_wr_locked = false; > > 182 } > > 183 > > > > -- > > 0-DAY CI Kernel Test Service > > https://github.com/intel/lkp-tests/wiki > > Cheers, Lorenzo