Hi Kalle, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 198925fae644b0099b66fac1d972721e6e563b17 commit: 298e50ad8eb8fa12ea68bb2da45bb8ef4edcd0ec [2244/7607] wifi: move raycs, wl3501 and rndis_wlan to legacy directory config: riscv-buildonly-randconfig-r004-20230329 (https://download.01.org/0day-ci/archive/20230330/202303300253.mdmTTwec-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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/next/linux-next.git/commit/?id=298e50ad8eb8fa12ea68bb2da45bb8ef4edcd0ec 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 298e50ad8eb8fa12ea68bb2da45bb8ef4edcd0ec # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/net/wireless/legacy/ init/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303300253.mdmTTwec-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:584:33: 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:594:59: 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:604:59: 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:743:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] insb(addr, buffer, count); ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb' #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ In file included from drivers/net/wireless/legacy/wl3501_cs.c:33: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:751:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] insw(addr, buffer, count); ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw' #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ In file included from drivers/net/wireless/legacy/wl3501_cs.c:33: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:759:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] insl(addr, buffer, count); ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl' #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ In file included from drivers/net/wireless/legacy/wl3501_cs.c:33: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:768:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] outsb(addr, buffer, count); ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ In file included from drivers/net/wireless/legacy/wl3501_cs.c:33: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:777:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] outsw(addr, buffer, count); ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw' #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ In file included from drivers/net/wireless/legacy/wl3501_cs.c:33: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:786:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] outsl(addr, buffer, count); ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl' #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ In file included from drivers/net/wireless/legacy/wl3501_cs.c:33: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: 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:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:1134:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; ~~~~~~~~~~ ^ >> drivers/net/wireless/legacy/wl3501_cs.c:258:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/legacy/wl3501_cs.c:70:33: note: expanded from macro 'wl3501_outsb' #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); } ^~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ drivers/net/wireless/legacy/wl3501_cs.c:281:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] insb(this->base_addr + WL3501_NIC_IODPA, dest, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb' #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) ~~~~~~~~~~ ^ 15 warnings generated. vim +258 drivers/net/wireless/legacy/wl3501_cs.c ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 237 ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 238 /** ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 239 * wl3501_set_to_wla - Move 'size' bytes from PC to card 2307d0bc9d8b60 drivers/net/wireless/wl3501_cs.c Lee Jones 2020-08-26 240 * @this: Card ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 241 * @dest: Card addressing space ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 242 * @src: PC addressing space ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 243 * @size: Bytes to move ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 244 * ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 245 * Move 'size' bytes from PC to card. (Shouldn't be interrupted) ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 246 */ ff1d2767d5a43c drivers/net/wireless/wl3501_cs.c Jouni Malinen 2005-05-12 247 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src, ff1d2767d5a43c drivers/net/wireless/wl3501_cs.c Jouni Malinen 2005-05-12 248 int size) ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 249 { ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 250 /* switch to SRAM Page 0 */ ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 251 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 : ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 252 WL3501_BSS_SPAGE0); ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 253 /* set LMAL and LMAH */ ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 254 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL); ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 255 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH); ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 256 ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 257 /* rep out to Port A */ ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 @258 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size); ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 259 } ^1da177e4c3f41 drivers/net/wireless/wl3501_cs.c Linus Torvalds 2005-04-16 260 :::::: The code at line 258 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
