Re: linux-next: build failure after merge of the block tree

kernel test robot
2026-04-15T11:32:00Z

Hi Mark,

kernel test robot noticed the following build errors:

[auto build test ERROR on axboe/for-next]
[also build test ERROR on isilence/zcrx/for-next]
[cannot apply to linus/master v7.0 next-20260414]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Mark-Brown/linux-next-build-failure-after-merge-of-the-block-tree/20260415-013341
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git for-next
patch link: https://lore.kernel.org/r/adjrVagmLJaozz5o%40sirena.co.uk
patch subject: linux-next: build failure after merge of the block tree
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20260415/202604151948.oJFK3dlv-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260415/202604151948.oJFK3dlv-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604151948.oJFK3dlv-lkp@intel.com/

All errors (new ones prefixed by >>):

io_uring/zcrx.c: In function 'zcrx_register_netdev':
>> io_uring/zcrx.c:812:15: error: implicit declaration of function 'netif_mp_open_rxq'; did you mean 'net_mp_open_rxq'? [-Wimplicit-function-declaration]
812 | ret = netif_mp_open_rxq(ifq->netdev, if_rxq, &mp_param, NULL);
| ^~~~~~~~~~~~~~~~~
| net_mp_open_rxq

vim +812 io_uring/zcrx.c

781
782 static int zcrx_register_netdev(struct io_zcrx_ifq *ifq,
783 struct io_uring_zcrx_ifq_reg *reg,
784 struct io_uring_zcrx_area_reg *area)
785 {
786 struct pp_memory_provider_params mp_param = {};
787 unsigned if_rxq = reg->if_rxq;
788 int ret;
789
790 ifq->netdev = netdev_get_by_index_lock(current->nsproxy->net_ns,
791 reg->if_idx);
792 if (!ifq->netdev)
793 return -ENODEV;
794
795 netdev_hold(ifq->netdev, &ifq->netdev_tracker, GFP_KERNEL);
796
797 ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, if_rxq);
798 if (!ifq->dev) {
799 ret = -EOPNOTSUPP;
800 goto netdev_put_unlock;
801 }
802 get_device(ifq->dev);
803
804 ret = io_zcrx_create_area(ifq, area, reg);
805 if (ret)
806 goto netdev_put_unlock;
807
808 if (reg->rx_buf_len)
809 mp_param.rx_page_size = 1U << ifq->niov_shift;
810 mp_param.mp_ops = &io_uring_pp_zc_ops;
811 mp_param.mp_priv = ifq;
> 812 ret = netif_mp_open_rxq(ifq->netdev, if_rxq, &mp_param, NULL);
813 if (ret)
814 goto netdev_put_unlock;
815
816 ifq->if_rxq = if_rxq;
817 ret = 0;
818 netdev_put_unlock:
819 netdev_unlock(ifq->netdev);
820 return ret;
821 }
822

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0-DAY CI Kernel Test Service