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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Axel Rasmussen , Yuanchu Xie , Chunyan Zhang Subject: Re: [PATCH V12 2/5] mm: userfaultfd: Add pgtable_supports_uffd_wp() Message-ID: <202509161304.mQnxOxhS-lkp@intel.com> References: <20250915101343.1449546-3-zhangchunyan@iscas.ac.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250915101343.1449546-3-zhangchunyan@iscas.ac.cn> Hi Chunyan, kernel test robot noticed the following build errors: [auto build test ERROR on brauner-vfs/vfs.all] [also build test ERROR on kees/for-next/execve linus/master v6.17-rc6] [cannot apply to akpm-mm/mm-everything next-20250915] [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/Chunyan-Zhang/mm-softdirty-Add-pgtable_supports_soft_dirty/20250915-181826 base: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all patch link: https://lore.kernel.org/r/20250915101343.1449546-3-zhangchunyan%40iscas.ac.cn patch subject: [PATCH V12 2/5] mm: userfaultfd: Add pgtable_supports_uffd_wp() config: riscv-randconfig-002-20250916 (https://download.01.org/0day-ci/archive/20250916/202509161304.mQnxOxhS-lkp@intel.com/config) compiler: riscv32-linux-gcc (GCC) 10.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250916/202509161304.mQnxOxhS-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/202509161304.mQnxOxhS-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from include/linux/mm_inline.h:10, from mm/internal.h:13, from mm/page_frag_cache.c:21: include/linux/userfaultfd_k.h: In function 'pte_marker_entry_uffd_wp': >> include/linux/userfaultfd_k.h:441:9: error: implicit declaration of function 'is_pte_marker_entry' [-Werror=implicit-function-declaration] 441 | return is_pte_marker_entry(entry) && | ^~~~~~~~~~~~~~~~~~~ >> include/linux/userfaultfd_k.h:442:10: error: implicit declaration of function 'pte_marker_get' [-Werror=implicit-function-declaration] 442 | (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); | ^~~~~~~~~~~~~~ >> include/linux/userfaultfd_k.h:442:34: error: 'PTE_MARKER_UFFD_WP' undeclared (first use in this function) 442 | (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); | ^~~~~~~~~~~~~~~~~~ include/linux/userfaultfd_k.h:442:34: note: each undeclared identifier is reported only once for each function it appears in include/linux/userfaultfd_k.h: In function 'pte_marker_uffd_wp': >> include/linux/userfaultfd_k.h:452:7: error: implicit declaration of function 'is_swap_pte'; did you mean 'is_swap_pmd'? [-Werror=implicit-function-declaration] 452 | if (!is_swap_pte(pte)) | ^~~~~~~~~~~ | is_swap_pmd >> include/linux/userfaultfd_k.h:455:10: error: implicit declaration of function 'pte_to_swp_entry' [-Werror=implicit-function-declaration] 455 | entry = pte_to_swp_entry(pte); | ^~~~~~~~~~~~~~~~ >> include/linux/userfaultfd_k.h:455:10: error: incompatible types when assigning to type 'swp_entry_t' from type 'int' In file included from include/linux/mm_inline.h:11, from mm/internal.h:13, from mm/page_frag_cache.c:21: include/linux/swapops.h: At top level: >> include/linux/swapops.h:124:19: error: static declaration of 'is_swap_pte' follows non-static declaration 124 | static inline int is_swap_pte(pte_t pte) | ^~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/internal.h:13, from mm/page_frag_cache.c:21: include/linux/userfaultfd_k.h:452:7: note: previous implicit declaration of 'is_swap_pte' was here 452 | if (!is_swap_pte(pte)) | ^~~~~~~~~~~ In file included from include/linux/mm_inline.h:11, from mm/internal.h:13, from mm/page_frag_cache.c:21: >> include/linux/swapops.h:133:27: error: conflicting types for 'pte_to_swp_entry' 133 | static inline swp_entry_t pte_to_swp_entry(pte_t pte) | ^~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/internal.h:13, from mm/page_frag_cache.c:21: include/linux/userfaultfd_k.h:455:10: note: previous implicit declaration of 'pte_to_swp_entry' was here 455 | entry = pte_to_swp_entry(pte); | ^~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:11, from mm/internal.h:13, from mm/page_frag_cache.c:21: >> include/linux/swapops.h:429:20: error: conflicting types for 'is_pte_marker_entry' 429 | static inline bool is_pte_marker_entry(swp_entry_t entry) | ^~~~~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/internal.h:13, from mm/page_frag_cache.c:21: include/linux/userfaultfd_k.h:441:9: note: previous implicit declaration of 'is_pte_marker_entry' was here 441 | return is_pte_marker_entry(entry) && | ^~~~~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:11, from mm/internal.h:13, from mm/page_frag_cache.c:21: >> include/linux/swapops.h:434:26: error: conflicting types for 'pte_marker_get' 434 | static inline pte_marker pte_marker_get(swp_entry_t entry) | ^~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/internal.h:13, from mm/page_frag_cache.c:21: include/linux/userfaultfd_k.h:442:10: note: previous implicit declaration of 'pte_marker_get' was here 442 | (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); | ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from include/linux/mm_inline.h:10, from mm/mremap.c:12: include/linux/userfaultfd_k.h: In function 'pte_marker_entry_uffd_wp': >> include/linux/userfaultfd_k.h:441:9: error: implicit declaration of function 'is_pte_marker_entry' [-Werror=implicit-function-declaration] 441 | return is_pte_marker_entry(entry) && | ^~~~~~~~~~~~~~~~~~~ >> include/linux/userfaultfd_k.h:442:10: error: implicit declaration of function 'pte_marker_get' [-Werror=implicit-function-declaration] 442 | (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); | ^~~~~~~~~~~~~~ >> include/linux/userfaultfd_k.h:442:34: error: 'PTE_MARKER_UFFD_WP' undeclared (first use in this function) 442 | (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); | ^~~~~~~~~~~~~~~~~~ include/linux/userfaultfd_k.h:442:34: note: each undeclared identifier is reported only once for each function it appears in include/linux/userfaultfd_k.h: In function 'pte_marker_uffd_wp': >> include/linux/userfaultfd_k.h:452:7: error: implicit declaration of function 'is_swap_pte'; did you mean 'is_swap_pmd'? [-Werror=implicit-function-declaration] 452 | if (!is_swap_pte(pte)) | ^~~~~~~~~~~ | is_swap_pmd >> include/linux/userfaultfd_k.h:455:10: error: implicit declaration of function 'pte_to_swp_entry' [-Werror=implicit-function-declaration] 455 | entry = pte_to_swp_entry(pte); | ^~~~~~~~~~~~~~~~ >> include/linux/userfaultfd_k.h:455:10: error: incompatible types when assigning to type 'swp_entry_t' from type 'int' In file included from include/linux/mm_inline.h:11, from mm/mremap.c:12: include/linux/swapops.h: At top level: >> include/linux/swapops.h:124:19: error: static declaration of 'is_swap_pte' follows non-static declaration 124 | static inline int is_swap_pte(pte_t pte) | ^~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/mremap.c:12: include/linux/userfaultfd_k.h:452:7: note: previous implicit declaration of 'is_swap_pte' was here 452 | if (!is_swap_pte(pte)) | ^~~~~~~~~~~ In file included from include/linux/mm_inline.h:11, from mm/mremap.c:12: >> include/linux/swapops.h:133:27: error: conflicting types for 'pte_to_swp_entry' 133 | static inline swp_entry_t pte_to_swp_entry(pte_t pte) | ^~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/mremap.c:12: include/linux/userfaultfd_k.h:455:10: note: previous implicit declaration of 'pte_to_swp_entry' was here 455 | entry = pte_to_swp_entry(pte); | ^~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:11, from mm/mremap.c:12: >> include/linux/swapops.h:429:20: error: conflicting types for 'is_pte_marker_entry' 429 | static inline bool is_pte_marker_entry(swp_entry_t entry) | ^~~~~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/mremap.c:12: include/linux/userfaultfd_k.h:441:9: note: previous implicit declaration of 'is_pte_marker_entry' was here 441 | return is_pte_marker_entry(entry) && | ^~~~~~~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:11, from mm/mremap.c:12: >> include/linux/swapops.h:434:26: error: conflicting types for 'pte_marker_get' 434 | static inline pte_marker pte_marker_get(swp_entry_t entry) | ^~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/mremap.c:12: include/linux/userfaultfd_k.h:442:10: note: previous implicit declaration of 'pte_marker_get' was here 442 | (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); | ^~~~~~~~~~~~~~ In file included from include/linux/mm_inline.h:10, from mm/mremap.c:12: include/linux/userfaultfd_k.h: In function 'pte_marker_entry_uffd_wp': include/linux/userfaultfd_k.h:443:1: warning: control reaches end of non-void function [-Wreturn-type] 443 | } | ^ cc1: some warnings being treated as errors vim +/is_pte_marker_entry +441 include/linux/userfaultfd_k.h 2bad466cc9d9b4c Peter Xu 2023-03-09 435 1db9dbc2ef05205 Peter Xu 2022-05-12 436 static inline bool pte_marker_entry_uffd_wp(swp_entry_t entry) 1db9dbc2ef05205 Peter Xu 2022-05-12 437 { 564509f441b4695 Chunyan Zhang 2025-09-15 438 if (!uffd_supports_wp_marker()) 564509f441b4695 Chunyan Zhang 2025-09-15 439 return false; 564509f441b4695 Chunyan Zhang 2025-09-15 440 1db9dbc2ef05205 Peter Xu 2022-05-12 @441 return is_pte_marker_entry(entry) && 1db9dbc2ef05205 Peter Xu 2022-05-12 @442 (pte_marker_get(entry) & PTE_MARKER_UFFD_WP); 1db9dbc2ef05205 Peter Xu 2022-05-12 443 } 1db9dbc2ef05205 Peter Xu 2022-05-12 444 1db9dbc2ef05205 Peter Xu 2022-05-12 445 static inline bool pte_marker_uffd_wp(pte_t pte) 1db9dbc2ef05205 Peter Xu 2022-05-12 446 { 1db9dbc2ef05205 Peter Xu 2022-05-12 447 swp_entry_t entry; 1db9dbc2ef05205 Peter Xu 2022-05-12 448 564509f441b4695 Chunyan Zhang 2025-09-15 449 if (!uffd_supports_wp_marker()) 564509f441b4695 Chunyan Zhang 2025-09-15 450 return false; 564509f441b4695 Chunyan Zhang 2025-09-15 451 1db9dbc2ef05205 Peter Xu 2022-05-12 @452 if (!is_swap_pte(pte)) 1db9dbc2ef05205 Peter Xu 2022-05-12 453 return false; 1db9dbc2ef05205 Peter Xu 2022-05-12 454 1db9dbc2ef05205 Peter Xu 2022-05-12 @455 entry = pte_to_swp_entry(pte); 1db9dbc2ef05205 Peter Xu 2022-05-12 456 1db9dbc2ef05205 Peter Xu 2022-05-12 457 return pte_marker_entry_uffd_wp(entry); 1db9dbc2ef05205 Peter Xu 2022-05-12 458 } 1db9dbc2ef05205 Peter Xu 2022-05-12 459 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki