tree: https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git virtio-vfc.v6 head: 7e3ab9aac391a4fb2aef468332128900bdef8df6 commit: 65a1d16588d3c3cb7b09f0f162c571be3533afc4 [3/5] virtio-scsi: Add FC transport class config: m68k-allmodconfig (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/hare/scsi-devel.git/commi... git remote add hare-scsi-devel https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git git fetch --no-tags hare-scsi-devel virtio-vfc.v6 git checkout 65a1d16588d3c3cb7b09f0f162c571be3533afc4 # 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 >>): In file included from include/linux/kernel.h:10, from include/linux/list.h:9, from include/linux/module.h:12, from drivers/scsi/virtio_scsi.c:15: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_mm.h:174:49: warning: ordered comparison of pointer with null pointer [-Wextra] 174 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:137:2: note: in expansion of macro 'BUG_ON' 137 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:137:10: note: in expansion of macro 'virt_addr_valid' 137 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ drivers/scsi/virtio_scsi.c: In function 'virtscsi_complete_cmd': drivers/scsi/virtio_scsi.c:178:3: error: 'tgt' undeclared (first use in this function) 178 | tgt = rport->dd_data; | ^~~ drivers/scsi/virtio_scsi.c:178:3: note: each undeclared identifier is reported only once for each function it appears in drivers/scsi/virtio_scsi.c: At top level: drivers/scsi/virtio_scsi.c:848:2: error: expected declaration specifiers or '...' before 'rport' 848 | rport = starget_to_rport(starget); | ^~~~~ drivers/scsi/virtio_scsi.c:849:2: error: expected declaration specifiers or '...' before 'if' 849 | if (rport) { | ^~ In file included from ./arch/m68k/include/generated/asm/rwonce.h:1, from include/linux/compiler.h:246, from include/linux/kernel.h:10, from include/linux/list.h:9, from include/linux/module.h:12, from drivers/scsi/virtio_scsi.c:15: 59 | do { \ | ^~ arch/m68k/include/asm/atomic.h:20:26: note: in expansion of macro 'WRITE_ONCE' 20 | #define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i)) | ^~~~~~~~~~ drivers/scsi/virtio_scsi.c:875:2: note: in expansion of macro 'atomic_set' 875 | atomic_set(&tgt->reqs, 0); | ^~~~~~~~~~ drivers/scsi/virtio_scsi.c:876:2: error: expected declaration specifiers or '...' before 'tgt' 876 | tgt->req_vq = &vscsi->req_vqs[0]; | ^~~ drivers/scsi/virtio_scsi.c:877:2: error: expected declaration specifiers or '...' before 'tgt' 877 | tgt->vscsi = vscsi; | ^~~ drivers/scsi/virtio_scsi.c:878:2: error: expected declaration specifiers or '...' before 'return' 878 | return 0; | ^~~~~~ drivers/scsi/virtio_scsi.c:879:1: error: expected declaration specifiers or '...' before '}' token 879 | } | ^ drivers/scsi/virtio_scsi.c:879:1: error: expected ';', ',' or ')' before '}' token drivers/scsi/virtio_scsi.c: In function 'virtscsi_rescan_work': drivers/scsi/virtio_scsi.c:951:8: error: implicit declaration of function 'virtscsi_kick_cmd'; did you mean 'virtscsi_kick_vq'? [-Werror=implicit-function-declaration] 951 | ret = virtscsi_kick_cmd(&vscsi->ctrl_vq, cmd, sizeof(cmd->req.rescan), | ^~~~~~~~~~~~~~~~~ | virtscsi_kick_vq drivers/scsi/virtio_scsi.c: At top level: drivers/scsi/virtio_scsi.c:1119:5: warning: no previous prototype for 'virtscsi_scan_finished' [-Wmissing-prototypes] 1119 | int virtscsi_scan_finished(struct Scsi_Host *sh, unsigned long time) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/virtio_scsi.c:881:13: warning: 'virtscsi_target_destroy' defined but not used [-Wunused-function] 881 | static void virtscsi_target_destroy(struct scsi_target *starget) | ^~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +59 include/asm-generic/rwonce.h e506ea451254ab Will Deacon 2019-10-15 57 e506ea451254ab Will Deacon 2019-10-15 58 #define WRITE_ONCE(x, val) \ e506ea451254ab Will Deacon 2019-10-15 @59 do { \ e506ea451254ab Will Deacon 2019-10-15 60 compiletime_assert_rwonce_type(x); \ e506ea451254ab Will Deacon 2019-10-15 61 __WRITE_ONCE(x, val); \ e506ea451254ab Will Deacon 2019-10-15 62 } while (0) e506ea451254ab Will Deacon 2019-10-15 63 :::::: The code at line 59 was first introduced by commit :::::: e506ea451254ab17e0bf918ca36232fec2a9b10c compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h :::::: TO: Will Deacon <will(a)kernel.org&gt; :::::: CC: Will Deacon <will(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org