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charset=us-ascii Content-Disposition: inline tree: git://git.infradead.org/users/hch/block.git drbd-blk-limits head: 952f67c787298e616a8aa5acc3f881d267e6c7b5 commit: c3361ed114ad32d50e622fdf1e3f27d4a1dde8fb [5/16] md/raid0: use the atomic queue limit update APIs config: s390-defconfig (https://download.01.org/0day-ci/archive/20240226/202402260107.fb5L5XSm-lkp@intel.com/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project edd4aee4dd9b5b98b2576a6f783e4086173d902a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240226/202402260107.fb5L5XSm-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202402260107.fb5L5XSm-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/md/raid0.c:17: In file included from include/trace/events/block.h:8: In file included from include/linux/blktrace_api.h:5: In file included from include/linux/blk-mq.h:8: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:78: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | 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] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from drivers/md/raid0.c:17: In file included from include/trace/events/block.h:8: In file included from include/linux/blktrace_api.h:5: In file included from include/linux/blk-mq.h:8: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:78: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from drivers/md/raid0.c:17: In file included from include/trace/events/block.h:8: In file included from include/linux/blktrace_api.h:5: In file included from include/linux/blk-mq.h:8: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:78: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __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] 594 | __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] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 692 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 700 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 708 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 717 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 726 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 735 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> drivers/md/raid0.c:396:7: warning: variable 'conf' is uninitialized when used here [-Wuninitialized] 396 | if (!conf) { | ^~~~ drivers/md/raid0.c:385:21: note: initialize the variable 'conf' to silence this warning 385 | struct r0conf *conf; | ^ | = NULL 13 warnings generated. vim +/conf +396 drivers/md/raid0.c 381 382 static int raid0_run(struct mddev *mddev) 383 { 384 struct queue_limits lim; 385 struct r0conf *conf; 386 int ret; 387 388 if (mddev->chunk_sectors == 0) { 389 pr_warn("md/raid0:%s: chunk size must be set.\n", mdname(mddev)); 390 return -EINVAL; 391 } 392 if (md_check_no_bitmap(mddev)) 393 return -EINVAL; 394 395 /* if conf is not null, we are here after takeover */ > 396 if (!conf) { 397 ret = create_strip_zones(mddev, &conf); 398 if (ret < 0) 399 return ret; 400 mddev->private = conf; 401 } 402 403 blk_set_stacking_limits(&lim); 404 lim.max_hw_sectors = mddev->chunk_sectors; 405 lim.max_write_zeroes_sectors = mddev->chunk_sectors; 406 lim.io_min = mddev->chunk_sectors << 9; 407 lim.io_opt = lim.io_min * mddev->raid_disks; 408 mddev_stack_rdev_limits(mddev, &lim); 409 ret = queue_limits_set(mddev->queue, &lim); 410 if (ret) 411 goto out_free_conf; 412 413 /* calculate array device size */ 414 md_set_array_sectors(mddev, raid0_size(mddev, 0, 0)); 415 416 pr_debug("md/raid0:%s: md_size is %llu sectors.\n", 417 mdname(mddev), 418 (unsigned long long)mddev->array_sectors); 419 420 dump_zones(mddev); 421 422 ret = md_integrity_register(mddev); 423 if (ret) 424 goto out_free_conf; 425 return 0; 426 out_free_conf: 427 free_conf(mddev, conf); 428 return ret; 429 } 430 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki