tree: https://github.com/kdave/btrfs-devel.git ext/aota/zoned-7 head: 17046312f8c0a16a96b4b3a145f4b30be84e6ede commit: bc960447dd5838f71d4ef88b107e8329a00c4f1d [133/162] btrfs: implement zoned chunk allocator config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-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 git checkout bc960447dd5838f71d4ef88b107e8329a00c4f1d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from include/linux/bitops.h:29, from include/linux/kernel.h:12, from include/linux/bvec.h:10, from include/linux/blk_types.h:10, from fs/btrfs/zoned.c:10: 209 | #define find_first_zero_bit(p,sz) _find_first_zero_bit_be(p,sz) | In file included from fs/btrfs/zoned.c:9: include/asm-generic/bitops/find.h:78: note: this is the location of the previous definition 78 | #define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0) | In file included from include/linux/bitops.h:29, from include/linux/kernel.h:12, from include/linux/bvec.h:10, from include/linux/blk_types.h:10, from fs/btrfs/zoned.c:10: 211 | #define find_first_bit(p,sz) _find_first_bit_be(p,sz) | In file included from fs/btrfs/zoned.c:9: include/asm-generic/bitops/find.h:75: note: this is the location of the previous definition 75 | #define find_first_bit(addr, size) find_next_bit((addr), (size), 0) | # https://github.com/kdave/btrfs-devel/commit/bc960447dd5838f71d4ef88b107e8... git remote add kdave-btrfs-devel https://github.com/kdave/btrfs-devel.git git fetch --no-tags kdave-btrfs-devel ext/aota/zoned-7 git checkout bc960447dd5838f71d4ef88b107e8329a00c4f1d vim +/find_first_zero_bit +209 arch/arm/include/asm/bitops.h ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 204 ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 205 #else ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 206 /* ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 207 * These are the big endian, atomic definitions. ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 208 */ ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 @209 #define find_first_zero_bit(p,sz) _find_first_zero_bit_be(p,sz) ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 210 #define find_next_zero_bit(p,sz,off) _find_next_zero_bit_be(p,sz,off) ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 @211 #define find_first_bit(p,sz) _find_first_bit_be(p,sz) ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 212 #define find_next_bit(p,sz,off) _find_next_bit_be(p,sz,off) ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 213 :::::: The code at line 209 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org