tree: https://git.kernel.org/pub/scm/linux/kernel/git/snitzer/linux.git wip head: 7defd0da9dd27ae6261617d0518d8b6c421703d1 commit: 7defd0da9dd27ae6261617d0518d8b6c421703d1 [30/30] dm: simplify target code conditional on CONFIG_BLK_DEV_ZONED config: m68k-defconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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/snitzer/linux.git/commit/... git remote add snitzer https://git.kernel.org/pub/scm/linux/kernel/git/snitzer/linux.git git fetch --no-tags snitzer wip git checkout 7defd0da9dd27ae6261617d0518d8b6c421703d1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 234 | .report_zones = linear_report_zones, | ^~~~~~~~~~~~ In file included from include/uapi/linux/posix_types.h:5, from include/uapi/linux/types.h:14, from include/linux/types.h:6, from include/linux/list.h:5, from include/linux/wait.h:7, from include/linux/wait_bit.h:8, from include/linux/fs.h:6, from drivers/md/dm.h:13, from drivers/md/dm-linear.c:7: include/linux/stddef.h:8:14: warning: initialized field overwritten [-Woverride-init] 8 | #define NULL ((void *)0) | ^ drivers/md/dm-linear.c:150:29: note: in expansion of macro 'NULL' 150 | #define linear_report_zones NULL | ^~~~ drivers/md/dm-linear.c:234:18: note: in expansion of macro 'linear_report_zones' 234 | .report_zones = linear_report_zones, | ^~~~~~~~~~~~~~~~~~~ include/linux/stddef.h:8:14: note: (near initialization for 'linear_target.name') 8 | #define NULL ((void *)0) | ^ drivers/md/dm-linear.c:150:29: note: in expansion of macro 'NULL' 150 | #define linear_report_zones NULL | ^~~~ drivers/md/dm-linear.c:234:18: note: in expansion of macro 'linear_report_zones' 234 | .report_zones = linear_report_zones, | ^~~~~~~~~~~~~~~~~~~ -- 3584 | .report_zones = crypt_report_zones, | ^~~~~~~~~~~~ In file included from include/uapi/linux/posix_types.h:5, from include/uapi/linux/types.h:14, from include/linux/types.h:6, from include/linux/list.h:5, from include/linux/swait.h:5, from include/linux/completion.h:12, from drivers/md/dm-crypt.c:10: include/linux/stddef.h:8:14: warning: initialized field overwritten [-Woverride-init] 8 | #define NULL ((void *)0) | ^ drivers/md/dm-crypt.c:3148:28: note: in expansion of macro 'NULL' 3148 | #define crypt_report_zones NULL | ^~~~ drivers/md/dm-crypt.c:3584:18: note: in expansion of macro 'crypt_report_zones' 3584 | .report_zones = crypt_report_zones, | ^~~~~~~~~~~~~~~~~~ include/linux/stddef.h:8:14: note: (near initialization for 'crypt_target.name') 8 | #define NULL ((void *)0) | ^ drivers/md/dm-crypt.c:3148:28: note: in expansion of macro 'NULL' 3148 | #define crypt_report_zones NULL | ^~~~ drivers/md/dm-crypt.c:3584:18: note: in expansion of macro 'crypt_report_zones' 3584 | .report_zones = crypt_report_zones, | ^~~~~~~~~~~~~~~~~~ vim +234 drivers/md/dm-linear.c 976431b02c2ef9 Dan Williams 2018-03-29 228 ^1da177e4c3f41 Linus Torvalds 2005-04-16 229 static struct target_type linear_target = { ^1da177e4c3f41 Linus Torvalds 2005-04-16 230 .name = "linear", 0be12c1c7fce7e Damien Le Moal 2017-05-08 231 .version = {1, 4, 0}, 6abc49468eeaad Konstantin Khlebnikov 2020-09-23 232 .features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_NOWAIT | 7e28f37ea16671 Satya Tangirala 2021-02-01 233 DM_TARGET_ZONED_HM | DM_TARGET_PASSES_CRYPTO, e76239a3748c90 Christoph Hellwig 2018-10-12 @234 .report_zones = linear_report_zones, ^1da177e4c3f41 Linus Torvalds 2005-04-16 235 .module = THIS_MODULE, ^1da177e4c3f41 Linus Torvalds 2005-04-16 236 .ctr = linear_ctr, ^1da177e4c3f41 Linus Torvalds 2005-04-16 237 .dtr = linear_dtr, ^1da177e4c3f41 Linus Torvalds 2005-04-16 238 .map = linear_map, ^1da177e4c3f41 Linus Torvalds 2005-04-16 239 .status = linear_status, e56f81e0b01ef4 Christoph Hellwig 2015-10-15 240 .prepare_ioctl = linear_prepare_ioctl, af4874e03ed82f Mike Snitzer 2009-06-22 241 .iterate_devices = linear_iterate_devices, 817bf402654595 Dan Williams 2017-04-12 242 .direct_access = linear_dax_direct_access, 7e026c8c0a4200 Dan Williams 2017-05-29 243 .dax_copy_from_iter = linear_dax_copy_from_iter, b3a9a0c36e1f7b Dan Williams 2018-05-02 244 .dax_copy_to_iter = linear_dax_copy_to_iter, cdf6cdcd3b99a9 Vivek Goyal 2020-02-28 245 .dax_zero_page_range = linear_dax_zero_page_range, ^1da177e4c3f41 Linus Torvalds 2005-04-16 246 }; ^1da177e4c3f41 Linus Torvalds 2005-04-16 247 :::::: The code at line 234 was first introduced by commit :::::: e76239a3748c90a8b0e197f8f4544a8ce52f126e block: add a report_zones method :::::: TO: Christoph Hellwig <hch(a)lst.de&gt; :::::: CC: Jens Axboe <axboe(a)kernel.dk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org