Hi Julian, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-nonmm-unstable] [also build test ERROR on arm64/for-next/core soc/for-next linus/master v6.11 next-20240924] [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/Julian-Vetter/Consolidate-__memcpy_-to-from-io-and-__memset_io-into-a-single-lib/20240924-172751 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable patch link: https://lore.kernel.org/r/20240924092223.534040-3-jvetter%40kalrayinc.com patch subject: [PATCH v4 2/5] Replace generic memcpy and memset by IO memcpy functions config: um-x86_64_defconfig (https://download.01.org/0day-ci/archive/20240925/202409250346.N624LLrr-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240925/202409250346.N624LLrr-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409250346.N624LLrr-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from kernel/time/time.c:31: In file included from include/linux/timekeeper_internal.h:10: In file included from include/linux/clocksource.h:22: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from kernel/time/time.c:31: In file included from include/linux/timekeeper_internal.h:10: In file included from include/linux/clocksource.h:22: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from kernel/time/time.c:31: In file included from include/linux/timekeeper_internal.h:10: In file included from include/linux/clocksource.h:22: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> include/asm-generic/io.h:1166:2: error: call to undeclared function '__memset_io'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] __memset_io(__io_virt(addr), value, size); ^ include/asm-generic/io.h:1166:2: note: did you mean 'memset_io'? include/asm-generic/io.h:1163:20: note: 'memset_io' declared here static inline void memset_io(volatile void __iomem *addr, int value, ^ include/asm-generic/io.h:1154:19: note: expanded from macro 'memset_io' #define memset_io memset_io ^ >> include/asm-generic/io.h:1184:2: error: call to undeclared function '__memcpy_fromio'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] __memcpy_fromio(buffer, __io_virt(addr), size); ^ include/asm-generic/io.h:1184:2: note: did you mean 'memcpy_fromio'? include/asm-generic/io.h:1180:20: note: 'memcpy_fromio' declared here static inline void memcpy_fromio(void *buffer, ^ include/asm-generic/io.h:1171:23: note: expanded from macro 'memcpy_fromio' #define memcpy_fromio memcpy_fromio ^ >> include/asm-generic/io.h:1201:2: error: call to undeclared function '__memcpy_toio'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] __memcpy_toio(__io_virt(addr), buffer, size); ^ include/asm-generic/io.h:1201:2: note: did you mean 'memcpy_toio'? include/asm-generic/io.h:1198:20: note: 'memcpy_toio' declared here static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer, ^ include/asm-generic/io.h:1189:21: note: expanded from macro 'memcpy_toio' #define memcpy_toio memcpy_toio ^ 12 warnings and 3 errors generated. -- In file included from kernel/time/hrtimer.c:30: In file included from include/linux/syscalls.h:93: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from kernel/time/hrtimer.c:30: In file included from include/linux/syscalls.h:93: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from kernel/time/hrtimer.c:30: In file included from include/linux/syscalls.h:93: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> include/asm-generic/io.h:1166:2: error: call to undeclared function '__memset_io'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] __memset_io(__io_virt(addr), value, size); ^ include/asm-generic/io.h:1166:2: note: did you mean 'memset_io'? include/asm-generic/io.h:1163:20: note: 'memset_io' declared here static inline void memset_io(volatile void __iomem *addr, int value, ^ include/asm-generic/io.h:1154:19: note: expanded from macro 'memset_io' #define memset_io memset_io ^ >> include/asm-generic/io.h:1184:2: error: call to undeclared function '__memcpy_fromio'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] __memcpy_fromio(buffer, __io_virt(addr), size); ^ include/asm-generic/io.h:1184:2: note: did you mean 'memcpy_fromio'? include/asm-generic/io.h:1180:20: note: 'memcpy_fromio' declared here static inline void memcpy_fromio(void *buffer, ^ include/asm-generic/io.h:1171:23: note: expanded from macro 'memcpy_fromio' #define memcpy_fromio memcpy_fromio ^ >> include/asm-generic/io.h:1201:2: error: call to undeclared function '__memcpy_toio'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] __memcpy_toio(__io_virt(addr), buffer, size); ^ include/asm-generic/io.h:1201:2: note: did you mean 'memcpy_toio'? include/asm-generic/io.h:1198:20: note: 'memcpy_toio' declared here static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer, ^ include/asm-generic/io.h:1189:21: note: expanded from macro 'memcpy_toio' #define memcpy_toio memcpy_toio ^ kernel/time/hrtimer.c:121:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [CLOCK_REALTIME] = HRTIMER_BASE_REALTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:119:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:122:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [CLOCK_MONOTONIC] = HRTIMER_BASE_MONOTONIC, ^~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:119:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:123:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [CLOCK_BOOTTIME] = HRTIMER_BASE_BOOTTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:119:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:124:17: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [CLOCK_TAI] = HRTIMER_BASE_TAI, ^~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:119:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ 16 warnings and 3 errors generated. vim +/__memset_io +1166 include/asm-generic/io.h 1152 1153 #ifndef memset_io 1154 #define memset_io memset_io 1155 /** 1156 * memset_io Set a range of I/O memory to a constant value 1157 * @addr: The beginning of the I/O-memory range to set 1158 * @val: The value to set the memory to 1159 * @count: The number of bytes to set 1160 * 1161 * Set a range of I/O memory to a given value. 1162 */ 1163 static inline void memset_io(volatile void __iomem *addr, int value, 1164 size_t size) 1165 { > 1166 __memset_io(__io_virt(addr), value, size); 1167 } 1168 #endif 1169 1170 #ifndef memcpy_fromio 1171 #define memcpy_fromio memcpy_fromio 1172 /** 1173 * memcpy_fromio Copy a block of data from I/O memory 1174 * @dst: The (RAM) destination for the copy 1175 * @src: The (I/O memory) source for the data 1176 * @count: The number of bytes to copy 1177 * 1178 * Copy a block of data from I/O memory. 1179 */ 1180 static inline void memcpy_fromio(void *buffer, 1181 const volatile void __iomem *addr, 1182 size_t size) 1183 { > 1184 __memcpy_fromio(buffer, __io_virt(addr), size); 1185 } 1186 #endif 1187 1188 #ifndef memcpy_toio 1189 #define memcpy_toio memcpy_toio 1190 /** 1191 * memcpy_toio Copy a block of data into I/O memory 1192 * @dst: The (I/O memory) destination for the copy 1193 * @src: The (RAM) source for the data 1194 * @count: The number of bytes to copy 1195 * 1196 * Copy a block of data to I/O memory. 1197 */ 1198 static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer, 1199 size_t size) 1200 { > 1201 __memcpy_toio(__io_virt(addr), buffer, size); 1202 } 1203 #endif 1204 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
