tree: https://github.com/bvanassche/linux scsi-remove-request-pointer head: 436d8cac8bb5ef646ac94ec9b908804dfd651f33 commit: 436d8cac8bb5ef646ac94ec9b908804dfd651f33 [50/50] core: Remove the request member from struct scsi_cmnd config: i386-randconfig-c001-20210522 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/bvanassche/linux/commit/436d8cac8bb5ef646ac94ec9b90880... git remote add bvanassche https://github.com/bvanassche/linux git fetch --no-tags bvanassche scsi-remove-request-pointer git checkout 436d8cac8bb5ef646ac94ec9b908804dfd651f33 # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): drivers/scsi/aha1542.c: In function 'aha1542_test_port': drivers/scsi/aha1542.c:209:5: warning: variable 'inquiry_result' set but not used [-Wunused-but-set-variable] 209 | u8 inquiry_result[4]; | ^~~~~~~~~~~~~~ In file included from include/scsi/scsi_cmnd.h:6, from drivers/scsi/aha1542.c:23: drivers/scsi/aha1542.c: In function 'aha1542_free_cmd': 269 | rq_for_each_segment(bv, cmd->request, iter) { | ^~ include/linux/blkdev.h:876:7: note: in definition of macro '__rq_for_each_bio' 876 | if ((rq->bio)) \ | ^~ drivers/scsi/aha1542.c:269:3: note: in expansion of macro 'rq_for_each_segment' 269 | rq_for_each_segment(bv, cmd->request, iter) { | ^~~~~~~~~~~~~~~~~~~ 269 | rq_for_each_segment(bv, cmd->request, iter) { | ^~ include/linux/blkdev.h:877:16: note: in definition of macro '__rq_for_each_bio' 877 | for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next) | ^~ drivers/scsi/aha1542.c:269:3: note: in expansion of macro 'rq_for_each_segment' 269 | rq_for_each_segment(bv, cmd->request, iter) { | ^~~~~~~~~~~~~~~~~~~ drivers/scsi/aha1542.c: In function 'aha1542_queuecommand': drivers/scsi/aha1542.c:454:30: error: 'struct scsi_cmnd' has no member named 'request' 454 | rq_for_each_segment(bv, cmd->request, iter) { | ^~ include/linux/blkdev.h:876:7: note: in definition of macro '__rq_for_each_bio' 876 | if ((rq->bio)) \ | ^~ drivers/scsi/aha1542.c:454:3: note: in expansion of macro 'rq_for_each_segment' 454 | rq_for_each_segment(bv, cmd->request, iter) { | ^~~~~~~~~~~~~~~~~~~ drivers/scsi/aha1542.c:454:30: error: 'struct scsi_cmnd' has no member named 'request' 454 | rq_for_each_segment(bv, cmd->request, iter) { | ^~ include/linux/blkdev.h:877:16: note: in definition of macro '__rq_for_each_bio' 877 | for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next) | ^~ drivers/scsi/aha1542.c:454:3: note: in expansion of macro 'rq_for_each_segment' 454 | rq_for_each_segment(bv, cmd->request, iter) { | ^~~~~~~~~~~~~~~~~~~ vim +269 drivers/scsi/aha1542.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 259 1794ef2b150dd5 Christoph Hellwig 2018-11-10 260 static void aha1542_free_cmd(struct scsi_cmnd *cmd) 1794ef2b150dd5 Christoph Hellwig 2018-11-10 261 { 1794ef2b150dd5 Christoph Hellwig 2018-11-10 262 struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); 1794ef2b150dd5 Christoph Hellwig 2018-11-10 263 2f2fef022c3e7a Christoph Hellwig 2021-03-31 264 if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 2f2fef022c3e7a Christoph Hellwig 2021-03-31 265 void *buf = acmd->data_buffer; 2f2fef022c3e7a Christoph Hellwig 2021-03-31 266 struct req_iterator iter; 2f2fef022c3e7a Christoph Hellwig 2021-03-31 267 struct bio_vec bv; 2f2fef022c3e7a Christoph Hellwig 2021-03-31 268 2f2fef022c3e7a Christoph Hellwig 2021-03-31 @269 rq_for_each_segment(bv, cmd->request, iter) { 2f2fef022c3e7a Christoph Hellwig 2021-03-31 270 memcpy_to_page(bv.bv_page, bv.bv_offset, buf, 2f2fef022c3e7a Christoph Hellwig 2021-03-31 271 bv.bv_len); 2f2fef022c3e7a Christoph Hellwig 2021-03-31 272 buf += bv.bv_len; 2f2fef022c3e7a Christoph Hellwig 2021-03-31 273 } 1794ef2b150dd5 Christoph Hellwig 2018-11-10 274 } 1794ef2b150dd5 Christoph Hellwig 2018-11-10 275 1794ef2b150dd5 Christoph Hellwig 2018-11-10 276 scsi_dma_unmap(cmd); 1794ef2b150dd5 Christoph Hellwig 2018-11-10 277 } 1794ef2b150dd5 Christoph Hellwig 2018-11-10 278 :::::: The code at line 269 was first introduced by commit :::::: 2f2fef022c3e7a29680cb5cb45c460d0ae786d05 aha1542: use a local bounce buffer :::::: 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