tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git perf-wip head: ba7751cd7411b7aaffd07728bd7cd6eeb890865d commit: c5b891d342f43c8e486be3aeacd5ee61298d3561 [13/20] block: add a struct io_batch argument to fops->iopoll() config: h8300-randconfig-r004-20211008 (attached as .config) compiler: h8300-linux-gcc (GCC) 11.2.0 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/axboe/linux-block.git/commit/?id=c5b891d342f43c8e486be3aeacd5ee61298d3561 git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git git fetch --no-tags axboe-block perf-wip git checkout c5b891d342f43c8e486be3aeacd5ee61298d3561 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/block/rnbd/rnbd-clt.c:1226:27: error: initialization of 'int (*)(struct blk_mq_hw_ctx *, struct io_batch *)' from incompatible pointer type 'int (*)(struct blk_mq_hw_ctx *)' [-Werror=incompatible-pointer-types] 1226 | .poll = rnbd_rdma_poll, | ^~~~~~~~~~~~~~ drivers/block/rnbd/rnbd-clt.c:1226:27: note: (near initialization for 'rnbd_mq_ops.poll') cc1: some warnings being treated as errors -- >> drivers/nvme/host/tcp.c:2457:27: error: initialization of 'int (*)(struct blk_mq_hw_ctx *, struct io_batch *)' from incompatible pointer type 'int (*)(struct blk_mq_hw_ctx *)' [-Werror=incompatible-pointer-types] 2457 | .poll = nvme_tcp_poll, | ^~~~~~~~~~~~~ drivers/nvme/host/tcp.c:2457:27: note: (near initialization for 'nvme_tcp_mq_ops.poll') cc1: some warnings being treated as errors vim +1226 drivers/block/rnbd/rnbd-clt.c 2958a995edc946 Gioh Kim 2021-04-19 1221 f7a7a5c228d45e Jack Wang 2020-05-11 1222 static struct blk_mq_ops rnbd_mq_ops = { f7a7a5c228d45e Jack Wang 2020-05-11 1223 .queue_rq = rnbd_queue_rq, f7a7a5c228d45e Jack Wang 2020-05-11 1224 .complete = rnbd_softirq_done_fn, 2958a995edc946 Gioh Kim 2021-04-19 1225 .map_queues = rnbd_rdma_map_queues, 2958a995edc946 Gioh Kim 2021-04-19 @1226 .poll = rnbd_rdma_poll, f7a7a5c228d45e Jack Wang 2020-05-11 1227 }; f7a7a5c228d45e Jack Wang 2020-05-11 1228 :::::: The code at line 1226 was first introduced by commit :::::: 2958a995edc94654df690318df7b9b49e5a3ef88 block/rnbd-clt: Support polling mode for IO latency optimization :::::: TO: Gioh Kim :::::: CC: Jens Axboe --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org