Hi Tong, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7e284070abe53d448517b80493863595af4ab5f0 commit: 3fee229a8eb936b96933c6b2cd02d2e87a4cc997 riscv/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK date: 2 weeks ago config: riscv-buildonly-randconfig-r002-20220527 (https://download.01.org/0day-ci/archive/20220527/202205272115.jTU9BRH9-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 134d7f9a4b97e9035150d970bd9e376043c4577e) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3fee229a8eb936b96933c6b2cd02d2e87a4cc997 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 3fee229a8eb936b96933c6b2cd02d2e87a4cc997 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): mm/page_table_check.c:148:6: error: call to undeclared function 'pte_user_accessible_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (pte_user_accessible_page(pte)) { ^ >> mm/page_table_check.c:149:36: error: call to undeclared function 'pte_pfn'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] page_table_check_clear(mm, addr, pte_pfn(pte), ^ mm/page_table_check.c:161:6: error: call to undeclared function 'pmd_user_accessible_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (pmd_user_accessible_page(pmd)) { ^ >> mm/page_table_check.c:162:36: error: call to undeclared function 'pmd_pfn'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] page_table_check_clear(mm, addr, pmd_pfn(pmd), ^ mm/page_table_check.c:162:36: note: did you mean '_pmd_pfn'? arch/riscv/include/asm/pgtable-64.h:144:29: note: '_pmd_pfn' declared here static inline unsigned long _pmd_pfn(pmd_t pmd) ^ mm/page_table_check.c:174:6: error: call to undeclared function 'pud_user_accessible_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (pud_user_accessible_page(pud)) { ^ >> mm/page_table_check.c:175:36: error: call to undeclared function 'pud_pfn'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] page_table_check_clear(mm, addr, pud_pfn(pud), ^ mm/page_table_check.c:175:36: note: did you mean '_pud_pfn'? arch/riscv/include/asm/pgtable-64.h:104:29: note: '_pud_pfn' declared here static inline unsigned long _pud_pfn(pud_t pud) ^ mm/page_table_check.c:188:6: error: call to undeclared function 'pte_user_accessible_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (pte_user_accessible_page(pte)) { ^ mm/page_table_check.c:189:34: error: call to undeclared function 'pte_pfn'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] page_table_check_set(mm, addr, pte_pfn(pte), ^ >> mm/page_table_check.c:191:10: error: call to undeclared function 'pte_write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] pte_write(pte)); ^ mm/page_table_check.c:203:6: error: call to undeclared function 'pmd_user_accessible_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (pmd_user_accessible_page(pmd)) { ^ mm/page_table_check.c:204:34: error: call to undeclared function 'pmd_pfn'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] page_table_check_set(mm, addr, pmd_pfn(pmd), ^ >> mm/page_table_check.c:206:10: error: call to undeclared function 'pmd_write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] pmd_write(pmd)); ^ mm/page_table_check.c:218:6: error: call to undeclared function 'pud_user_accessible_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (pud_user_accessible_page(pud)) { ^ mm/page_table_check.c:219:34: error: call to undeclared function 'pud_pfn'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] page_table_check_set(mm, addr, pud_pfn(pud), ^ >> mm/page_table_check.c:221:10: error: call to undeclared function 'pud_write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] pud_write(pud)); ^ mm/page_table_check.c:221:10: note: did you mean 'up_write'? include/linux/rwsem.h:202:13: note: 'up_write' declared here extern void up_write(struct rw_semaphore *sem); ^ >> mm/page_table_check.c:233:7: error: call to undeclared function 'pmd_bad'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (!pmd_bad(pmd) && !pmd_leaf(pmd)) { ^ >> mm/page_table_check.c:234:17: error: call to undeclared function 'pte_offset_map'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] pte_t *ptep = pte_offset_map(&pmd, addr); ^ >> mm/page_table_check.c:234:10: warning: incompatible integer to pointer conversion initializing 'pte_t *' with an expression of type 'int' [-Wint-conversion] pte_t *ptep = pte_offset_map(&pmd, addr); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~ >> mm/page_table_check.c:237:3: error: call to undeclared function 'pte_unmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] pte_unmap(ptep); ^ mm/page_table_check.c:237:3: note: did you mean 'pte_devmap'? include/linux/mm.h:2113:19: note: 'pte_devmap' declared here static inline int pte_devmap(pte_t pte) ^ >> mm/page_table_check.c:238:19: error: use of undeclared identifier 'PTRS_PER_PTE' for (i = 0; i < PTRS_PER_PTE; i++) { ^ 1 warning and 19 errors generated. vim +/pmd_pfn +162 mm/page_table_check.c df4e817b710809 Pasha Tatashin 2022-01-14 141 df4e817b710809 Pasha Tatashin 2022-01-14 142 void __page_table_check_pte_clear(struct mm_struct *mm, unsigned long addr, df4e817b710809 Pasha Tatashin 2022-01-14 143 pte_t pte) df4e817b710809 Pasha Tatashin 2022-01-14 144 { df4e817b710809 Pasha Tatashin 2022-01-14 145 if (&init_mm == mm) df4e817b710809 Pasha Tatashin 2022-01-14 146 return; df4e817b710809 Pasha Tatashin 2022-01-14 147 df4e817b710809 Pasha Tatashin 2022-01-14 148 if (pte_user_accessible_page(pte)) { df4e817b710809 Pasha Tatashin 2022-01-14 @149 page_table_check_clear(mm, addr, pte_pfn(pte), df4e817b710809 Pasha Tatashin 2022-01-14 150 PAGE_SIZE >> PAGE_SHIFT); df4e817b710809 Pasha Tatashin 2022-01-14 151 } df4e817b710809 Pasha Tatashin 2022-01-14 152 } df4e817b710809 Pasha Tatashin 2022-01-14 153 EXPORT_SYMBOL(__page_table_check_pte_clear); df4e817b710809 Pasha Tatashin 2022-01-14 154 df4e817b710809 Pasha Tatashin 2022-01-14 155 void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr, df4e817b710809 Pasha Tatashin 2022-01-14 156 pmd_t pmd) df4e817b710809 Pasha Tatashin 2022-01-14 157 { df4e817b710809 Pasha Tatashin 2022-01-14 158 if (&init_mm == mm) df4e817b710809 Pasha Tatashin 2022-01-14 159 return; df4e817b710809 Pasha Tatashin 2022-01-14 160 df4e817b710809 Pasha Tatashin 2022-01-14 161 if (pmd_user_accessible_page(pmd)) { df4e817b710809 Pasha Tatashin 2022-01-14 @162 page_table_check_clear(mm, addr, pmd_pfn(pmd), 92fb05242a1b1e Tong Tiangen 2022-05-12 163 PMD_SIZE >> PAGE_SHIFT); df4e817b710809 Pasha Tatashin 2022-01-14 164 } df4e817b710809 Pasha Tatashin 2022-01-14 165 } df4e817b710809 Pasha Tatashin 2022-01-14 166 EXPORT_SYMBOL(__page_table_check_pmd_clear); df4e817b710809 Pasha Tatashin 2022-01-14 167 df4e817b710809 Pasha Tatashin 2022-01-14 168 void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr, df4e817b710809 Pasha Tatashin 2022-01-14 169 pud_t pud) df4e817b710809 Pasha Tatashin 2022-01-14 170 { df4e817b710809 Pasha Tatashin 2022-01-14 171 if (&init_mm == mm) df4e817b710809 Pasha Tatashin 2022-01-14 172 return; df4e817b710809 Pasha Tatashin 2022-01-14 173 df4e817b710809 Pasha Tatashin 2022-01-14 174 if (pud_user_accessible_page(pud)) { df4e817b710809 Pasha Tatashin 2022-01-14 @175 page_table_check_clear(mm, addr, pud_pfn(pud), 92fb05242a1b1e Tong Tiangen 2022-05-12 176 PUD_SIZE >> PAGE_SHIFT); df4e817b710809 Pasha Tatashin 2022-01-14 177 } df4e817b710809 Pasha Tatashin 2022-01-14 178 } df4e817b710809 Pasha Tatashin 2022-01-14 179 EXPORT_SYMBOL(__page_table_check_pud_clear); df4e817b710809 Pasha Tatashin 2022-01-14 180 df4e817b710809 Pasha Tatashin 2022-01-14 181 void __page_table_check_pte_set(struct mm_struct *mm, unsigned long addr, df4e817b710809 Pasha Tatashin 2022-01-14 182 pte_t *ptep, pte_t pte) df4e817b710809 Pasha Tatashin 2022-01-14 183 { df4e817b710809 Pasha Tatashin 2022-01-14 184 if (&init_mm == mm) df4e817b710809 Pasha Tatashin 2022-01-14 185 return; df4e817b710809 Pasha Tatashin 2022-01-14 186 64d8b9e14512ce Pasha Tatashin 2022-02-03 187 __page_table_check_pte_clear(mm, addr, *ptep); df4e817b710809 Pasha Tatashin 2022-01-14 188 if (pte_user_accessible_page(pte)) { df4e817b710809 Pasha Tatashin 2022-01-14 189 page_table_check_set(mm, addr, pte_pfn(pte), df4e817b710809 Pasha Tatashin 2022-01-14 190 PAGE_SIZE >> PAGE_SHIFT, df4e817b710809 Pasha Tatashin 2022-01-14 @191 pte_write(pte)); df4e817b710809 Pasha Tatashin 2022-01-14 192 } df4e817b710809 Pasha Tatashin 2022-01-14 193 } df4e817b710809 Pasha Tatashin 2022-01-14 194 EXPORT_SYMBOL(__page_table_check_pte_set); df4e817b710809 Pasha Tatashin 2022-01-14 195 df4e817b710809 Pasha Tatashin 2022-01-14 196 void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr, df4e817b710809 Pasha Tatashin 2022-01-14 197 pmd_t *pmdp, pmd_t pmd) df4e817b710809 Pasha Tatashin 2022-01-14 198 { df4e817b710809 Pasha Tatashin 2022-01-14 199 if (&init_mm == mm) df4e817b710809 Pasha Tatashin 2022-01-14 200 return; df4e817b710809 Pasha Tatashin 2022-01-14 201 64d8b9e14512ce Pasha Tatashin 2022-02-03 202 __page_table_check_pmd_clear(mm, addr, *pmdp); df4e817b710809 Pasha Tatashin 2022-01-14 203 if (pmd_user_accessible_page(pmd)) { df4e817b710809 Pasha Tatashin 2022-01-14 204 page_table_check_set(mm, addr, pmd_pfn(pmd), 92fb05242a1b1e Tong Tiangen 2022-05-12 205 PMD_SIZE >> PAGE_SHIFT, df4e817b710809 Pasha Tatashin 2022-01-14 @206 pmd_write(pmd)); df4e817b710809 Pasha Tatashin 2022-01-14 207 } df4e817b710809 Pasha Tatashin 2022-01-14 208 } df4e817b710809 Pasha Tatashin 2022-01-14 209 EXPORT_SYMBOL(__page_table_check_pmd_set); df4e817b710809 Pasha Tatashin 2022-01-14 210 df4e817b710809 Pasha Tatashin 2022-01-14 211 void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr, df4e817b710809 Pasha Tatashin 2022-01-14 212 pud_t *pudp, pud_t pud) df4e817b710809 Pasha Tatashin 2022-01-14 213 { df4e817b710809 Pasha Tatashin 2022-01-14 214 if (&init_mm == mm) df4e817b710809 Pasha Tatashin 2022-01-14 215 return; df4e817b710809 Pasha Tatashin 2022-01-14 216 64d8b9e14512ce Pasha Tatashin 2022-02-03 217 __page_table_check_pud_clear(mm, addr, *pudp); df4e817b710809 Pasha Tatashin 2022-01-14 218 if (pud_user_accessible_page(pud)) { df4e817b710809 Pasha Tatashin 2022-01-14 219 page_table_check_set(mm, addr, pud_pfn(pud), 92fb05242a1b1e Tong Tiangen 2022-05-12 220 PUD_SIZE >> PAGE_SHIFT, df4e817b710809 Pasha Tatashin 2022-01-14 @221 pud_write(pud)); df4e817b710809 Pasha Tatashin 2022-01-14 222 } df4e817b710809 Pasha Tatashin 2022-01-14 223 } df4e817b710809 Pasha Tatashin 2022-01-14 224 EXPORT_SYMBOL(__page_table_check_pud_set); 80110bbfbba6f0 Pasha Tatashin 2022-02-03 225 80110bbfbba6f0 Pasha Tatashin 2022-02-03 226 void __page_table_check_pte_clear_range(struct mm_struct *mm, 80110bbfbba6f0 Pasha Tatashin 2022-02-03 227 unsigned long addr, 80110bbfbba6f0 Pasha Tatashin 2022-02-03 228 pmd_t pmd) 80110bbfbba6f0 Pasha Tatashin 2022-02-03 229 { 80110bbfbba6f0 Pasha Tatashin 2022-02-03 230 if (&init_mm == mm) 80110bbfbba6f0 Pasha Tatashin 2022-02-03 231 return; 80110bbfbba6f0 Pasha Tatashin 2022-02-03 232 80110bbfbba6f0 Pasha Tatashin 2022-02-03 @233 if (!pmd_bad(pmd) && !pmd_leaf(pmd)) { 80110bbfbba6f0 Pasha Tatashin 2022-02-03 @234 pte_t *ptep = pte_offset_map(&pmd, addr); 80110bbfbba6f0 Pasha Tatashin 2022-02-03 235 unsigned long i; 80110bbfbba6f0 Pasha Tatashin 2022-02-03 236 80110bbfbba6f0 Pasha Tatashin 2022-02-03 @237 pte_unmap(ptep); 80110bbfbba6f0 Pasha Tatashin 2022-02-03 @238 for (i = 0; i < PTRS_PER_PTE; i++) { :::::: The code at line 162 was first introduced by commit :::::: df4e817b710809425d899340dbfa8504a3ca4ba5 mm: page table check :::::: TO: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
