Hi Steve, [auto build test ERROR on linus/master] [also build test ERROR on v4.10-rc3 next-20170113] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Steve-Kenton/fs-udf-sanitize-types-use-consistent-naming-and-add-kernel-doc-comment/20170115-133615 config: arm-axm55xx_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): fs/built-in.o: In function `udf_bitmap_free_blocks': >> fs/udf/balloc.c:176: undefined reference to `__aeabi_uldivmod' fs/built-in.o: In function `udf_bitmap_prealloc_blocks': fs/udf/balloc.c:253: undefined reference to `__aeabi_uldivmod' fs/built-in.o: In function `udf_bitmap_new_block': fs/udf/balloc.c:313: undefined reference to `__aeabi_uldivmod' vim +176 fs/udf/balloc.c c436c511 Steve Kenton 2017-01-14 170 block = eloc->logicalBlockNum + offset + 4b11111a Marcin Slusarz 2008-02-08 171 (sizeof(struct spaceBitmapDesc) << 3); ^1da177e Linus Torvalds 2005-04-16 172 4daa1b87 Marcin Slusarz 2008-02-08 173 do { ^1da177e Linus Torvalds 2005-04-16 174 overflow = 0; ^1da177e Linus Torvalds 2005-04-16 175 block_group = block >> (sb->s_blocksize_bits + 3); ^1da177e Linus Torvalds 2005-04-16 @176 bit = block % (sb->s_blocksize << 3); ^1da177e Linus Torvalds 2005-04-16 177 ^1da177e Linus Torvalds 2005-04-16 178 /* ^1da177e Linus Torvalds 2005-04-16 179 * Check to see if we are freeing blocks across a group boundary. :::::: The code at line 176 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds :::::: CC: Linus Torvalds --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation