tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 93717cde744f9d26aa1b4561f7d9ba2a230459eb commit: 9a73242564ee491f17c929ea7b82f5ce208fcd00 [11305/11331] Merge branch 'akpm-current/current' config: ia64-buildonly-randconfig-r004-20210830 (attached as .config) compiler: ia64-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=9a73242564ee491f17c929ea7b82f5ce208fcd00 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 9a73242564ee491f17c929ea7b82f5ce208fcd00 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from arch/ia64/include/asm/pgtable.h:153, from include/linux/pgtable.h:6, from arch/ia64/include/asm/uaccess.h:40, from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/debugfs.h:15, from drivers/iommu/intel/iommu.c:18: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 127 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ In file included from include/linux/bitmap.h:9, from drivers/iommu/intel/iommu.c:17: drivers/iommu/intel/iommu.c: In function 'domain_context_mapping_one': >> include/linux/find.h:119:37: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'int[1]' [-Warray-bounds] 119 | unsigned long val = *addr & GENMASK(size - 1, 0); | ^~~~~ drivers/iommu/intel/iommu.c:1992:18: note: while referencing 'max_pde' 1992 | int pds, max_pde; | ^~~~~~~ -- In file included from arch/ia64/include/asm/pgtable.h:153, from include/linux/pgtable.h:6, from arch/ia64/include/asm/uaccess.h:40, from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/debugfs.h:15, from drivers/bus/mhi/core/init.c:7: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 127 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ In file included from include/linux/bitmap.h:9, from include/linux/cpumask.h:12, from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/spinlock.h:63, from include/linux/wait.h:9, from include/linux/wait_bit.h:8, from include/linux/fs.h:6, from include/linux/debugfs.h:15, from drivers/bus/mhi/core/init.c:7: drivers/bus/mhi/core/init.c: In function 'to_mhi_pm_state_str': >> include/linux/find.h:187:37: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'enum mhi_pm_state[1]' [-Warray-bounds] 187 | unsigned long val = *addr & GENMASK(size - 1, 0); | ^~~~~ drivers/bus/mhi/core/init.c:80:51: note: while referencing 'state' 80 | const char *to_mhi_pm_state_str(enum mhi_pm_state state) | ~~~~~~~~~~~~~~~~~~^~~~~ vim +119 include/linux/find.h c7f612cdf091de include/asm-generic/bitops/find.h Akinobu Mita 2006-03-26 105 e296d831fe2e5a include/asm-generic/bitops/find.h Yury Norov 2021-08-24 106 #ifndef find_first_bit 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 107 /** 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 108 * find_first_bit - find the first set bit in a memory region 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 109 * @addr: The address to start the search at ec778edf97dcaa include/asm-generic/bitops/find.h Cody P Schafer 2013-11-12 110 * @size: The maximum number of bits to search 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 111 * 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 112 * Returns the bit number of the first set bit. ec778edf97dcaa include/asm-generic/bitops/find.h Cody P Schafer 2013-11-12 113 * If no bits are set, returns @size. 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 114 */ 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 115 static inline 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 116 unsigned long find_first_bit(const unsigned long *addr, unsigned long size) 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 117 { 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 118 if (small_const_nbits(size)) { 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 @119 unsigned long val = *addr & GENMASK(size - 1, 0); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 120 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 121 return val ? __ffs(val) : size; 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 122 } 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 123 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 124 return _find_first_bit(addr, size); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 125 } e296d831fe2e5a include/asm-generic/bitops/find.h Yury Norov 2021-08-24 126 #endif 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 127 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 128 #ifndef find_first_and_bit 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 129 /** 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 130 * find_first_and_bit - find the first set bit in both memory regions 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 131 * @addr1: The first address to base the search on 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 132 * @addr2: The second address to base the search on 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 133 * @size: The bitmap size in bits 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 134 * 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 135 * Returns the bit number for the next set bit 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 136 * If no bits are set, returns @size. 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 137 */ 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 138 static inline 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 139 unsigned long find_first_and_bit(const unsigned long *addr1, 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 140 const unsigned long *addr2, 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 141 unsigned long size) 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 142 { 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 143 if (small_const_nbits(size)) { 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 144 unsigned long val = *addr1 & *addr2 & GENMASK(size - 1, 0); 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 145 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 146 return val ? __ffs(val) : size; 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 147 } 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 148 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 149 return _find_first_and_bit(addr1, addr2, size); 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 150 } 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 151 #endif 6b6c111934a424 include/linux/find.h Yury Norov 2021-08-24 152 e296d831fe2e5a include/asm-generic/bitops/find.h Yury Norov 2021-08-24 153 #ifndef find_first_zero_bit 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 154 /** 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 155 * find_first_zero_bit - find the first cleared bit in a memory region 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 156 * @addr: The address to start the search at ec778edf97dcaa include/asm-generic/bitops/find.h Cody P Schafer 2013-11-12 157 * @size: The maximum number of bits to search 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 158 * 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 159 * Returns the bit number of the first cleared bit. ec778edf97dcaa include/asm-generic/bitops/find.h Cody P Schafer 2013-11-12 160 * If no bits are zero, returns @size. 708ff2a0097b02 include/asm-generic/bitops/find.h Akinobu Mita 2010-09-29 161 */ 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 162 static inline 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 163 unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size) 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 164 { 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 165 if (small_const_nbits(size)) { 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 166 unsigned long val = *addr | ~GENMASK(size - 1, 0); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 167 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 168 return val == ~0UL ? size : ffz(val); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 169 } 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 170 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 171 return _find_first_zero_bit(addr, size); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 172 } e296d831fe2e5a include/asm-generic/bitops/find.h Yury Norov 2021-08-24 173 #endif e296d831fe2e5a include/asm-generic/bitops/find.h Yury Norov 2021-08-24 174 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 175 #ifndef find_last_bit 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 176 /** 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 177 * find_last_bit - find the last set bit in a memory region 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 178 * @addr: The address to start the search at 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 179 * @size: The number of bits to search 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 180 * 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 181 * Returns the bit number of the last set bit, or size. 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 182 */ 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 183 static inline 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 184 unsigned long find_last_bit(const unsigned long *addr, unsigned long size) 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 185 { 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 186 if (small_const_nbits(size)) { 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 @187 unsigned long val = *addr & GENMASK(size - 1, 0); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 188 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 189 return val ? __fls(val) : size; 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 190 } 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 191 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 192 return _find_last_bit(addr, size); 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 193 } 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 194 #endif 2cc7b6a44ac21d include/asm-generic/bitops/find.h Yury Norov 2021-05-06 195 :::::: The code at line 119 was first introduced by commit :::::: 2cc7b6a44ac21d31b398b03f4845c53152070416 lib: add fast path for find_first_*_bit() and find_last_bit() :::::: TO: Yury Norov <yury.norov@xxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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