tree: https://git.kernel.org/pub/scm/linux/kernel/git/jth/linux.git btrfs-integrity head: 178abf17d0aba23b45096ce15ff41bf56f01340b commit: 2706df932e9847b14a2a0592fedad8b8c4a11077 [2/6] btrfs: add authentication support config: x86_64-kexec (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/jth/linux.git/commit/?id=... git remote add jth https://git.kernel.org/pub/scm/linux/kernel/git/jth/linux.git git fetch --no-tags jth btrfs-integrity git checkout 2706df932e9847b14a2a0592fedad8b8c4a11077 # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 >>): In file included from fs/btrfs/inode.c:36: fs/btrfs/inode.c: In function 'btrfs_swap_activate': 1373 | BTRFS_MOUNT_##opt) | ^~~~~~~~~~~~ fs/btrfs/inode.c:10062:6: note: in expansion of macro 'btrfs_test_opt' 10062 | if (btrfs_test_opt(fs_info, AUTH_HASH)) { | ^~~~~~~~~~~~~~ fs/btrfs/ctree.h:1373:7: note: each undeclared identifier is reported only once for each function it appears in 1373 | BTRFS_MOUNT_##opt) | ^~~~~~~~~~~~ fs/btrfs/inode.c:10062:6: note: in expansion of macro 'btrfs_test_opt' 10062 | if (btrfs_test_opt(fs_info, AUTH_HASH)) { | ^~~~~~~~~~~~~~ vim +1373 fs/btrfs/ctree.h 8b87dc17fbc7443 David Sterba 2013-08-01 1368 b6cda9bcb4df754 Chris Mason 2007-12-14 1369 #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) b6cda9bcb4df754 Chris Mason 2007-12-14 1370 #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) dc81cdc58ad2f41 Miao Xie 2013-02-20 1371 #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) 3cdde2240d4533f Jeff Mahoney 2016-06-09 1372 #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ b6cda9bcb4df754 Chris Mason 2007-12-14 @1373 BTRFS_MOUNT_##opt) 572d9ab7845ea0e David Sterba 2014-02-05 1374 :::::: The code at line 1373 was first introduced by commit :::::: b6cda9bcb4df7544c67fc3548a53bc1607d59f46 Btrfs: Add mount -o nodatasum to turn of file data checksumming :::::: TO: Chris Mason <chris.mason(a)oracle.com&gt; :::::: CC: Chris Mason <chris.mason(a)oracle.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org