Hi Hannes, I love your patch! Yet something to improve: [auto build test ERROR on axboe-block/for-next] [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/Hannes-Reinecke/brd-convert-to-folios/20230306-200223 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next patch link: https://lore.kernel.org/r/20230306120127.21375-2-hare%40suse.de patch subject: [PATCH 1/5] brd: convert to folios config: hexagon-randconfig-r045-20230306 (https://download.01.org/0day-ci/archive/20230306/202303062339.fe53AMz1-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 # https://github.com/intel-lab-lkp/linux/commit/b29fb9873ddbb2efb157e5d6548abf3c88b3458c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Hannes-Reinecke/brd-convert-to-folios/20230306-200223 git checkout b29fb9873ddbb2efb157e5d6548abf3c88b3458c # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/block/ 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/202303062339.fe53AMz1-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from drivers/block/brd.c:17: In file included from include/linux/blkdev.h:9: In file included from include/linux/blk_types.h:10: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/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/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: 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:560:61: 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 drivers/block/brd.c:17: In file included from include/linux/blkdev.h:9: In file included from include/linux/blk_types.h:10: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/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/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: 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 drivers/block/brd.c:17: In file included from include/linux/blkdev.h:9: In file included from include/linux/blk_types.h:10: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/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/hexagon/include/asm/io.h:334: 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); ~~~~~~~~~~ ^ >> drivers/block/brd.c:325:8: error: call to undeclared function 'brd_do_bvec'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] err = brd_do_bvec(brd, page, PAGE_SIZE, 0, op, sector); ^ 6 warnings and 1 error generated. vim +/brd_do_bvec +325 drivers/block/brd.c 9db5579be4bb53 Nicholas Piggin 2008-02-08 316 a72132c31d5809 Matthew Wilcox 2014-06-04 317 static int brd_rw_page(struct block_device *bdev, sector_t sector, 86947df3a92364 Bart Van Assche 2022-07-14 318 struct page *page, enum req_op op) a72132c31d5809 Matthew Wilcox 2014-06-04 319 { a72132c31d5809 Matthew Wilcox 2014-06-04 320 struct brd_device *brd = bdev->bd_disk->private_data; 98cc093cba1e92 Huang Ying 2017-09-06 321 int err; 98cc093cba1e92 Huang Ying 2017-09-06 322 98cc093cba1e92 Huang Ying 2017-09-06 323 if (PageTransHuge(page)) 98cc093cba1e92 Huang Ying 2017-09-06 324 return -ENOTSUPP; 3f289dcb4b2654 Tejun Heo 2018-07-18 @325 err = brd_do_bvec(brd, page, PAGE_SIZE, 0, op, sector); 3f289dcb4b2654 Tejun Heo 2018-07-18 326 page_endio(page, op_is_write(op), err); a72132c31d5809 Matthew Wilcox 2014-06-04 327 return err; a72132c31d5809 Matthew Wilcox 2014-06-04 328 } a72132c31d5809 Matthew Wilcox 2014-06-04 329 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
