netdev - Re: [PATCH 22/33] virtio_net: xsk: introduce xsk disable

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Date:   Sun, 12 Feb 2023 15:56:26 +0800
From:   kernel test robot <lkp@...el.com>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, netdev@...r.kernel.org
Cc:     oe-kbuild-all@...ts.linux.dev, Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Björn Töpel <bjorn@...nel.org>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Menglong Dong <imagedong@...cent.com>,
        Kuniyuki Iwashima <kuniyu@...zon.com>,
        Petr Machata <petrm@...dia.com>,
        virtualization@...ts.linux-foundation.org, bpf@...r.kernel.org
Subject: Re: [PATCH 22/33] virtio_net: xsk: introduce xsk disable

Hi Xuan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on next-20230210]
[cannot apply to net/master mst-vhost/linux-next linus/master v6.2-rc7]
[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/Xuan-Zhuo/virtio_ring-virtqueue_add-support-premapped/20230202-190707
patch link:    https://lore.kernel.org/r/20230202110058.130695-23-xuanzhuo%40linux.alibaba.com
patch subject: [PATCH 22/33] virtio_net: xsk: introduce xsk disable
config: nios2-randconfig-s033-20230202 (https://download.01.org/0day-ci/archive/20230212/202302121555.BtDmbIKI-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/3c385ac45368b585d2ca1a45263b4a0536cef0dd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Xuan-Zhuo/virtio_ring-virtqueue_add-support-premapped/20230202-190707
        git checkout 3c385ac45368b585d2ca1a45263b4a0536cef0dd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=nios2 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/net/virtio/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302121555.BtDmbIKI-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/net/virtio/xsk.c:133:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct xsk_buff_pool *pool @@     got struct xsk_buff_pool [noderef] __rcu *pool @@
   drivers/net/virtio/xsk.c:133:35: sparse:     expected struct xsk_buff_pool *pool
   drivers/net/virtio/xsk.c:133:35: sparse:     got struct xsk_buff_pool [noderef] __rcu *pool

vim +133 drivers/net/virtio/xsk.c

   116	
   117	static int virtnet_xsk_pool_disable(struct net_device *dev, u16 qid)
   118	{
   119		struct virtnet_info *vi = netdev_priv(dev);
   120		struct receive_queue *rq;
   121		struct send_queue *sq;
   122		int err1, err2;
   123	
   124		if (qid >= vi->curr_queue_pairs)
   125			return -EINVAL;
   126	
   127		sq = &vi->sq[qid];
   128		rq = &vi->rq[qid];
   129	
   130		virtio_dma_unmap(&vi->vdev->dev, sq->xsk.hdr_dma_address, vi->hdr_len,
   131				 DMA_TO_DEVICE);
   132	
 > 133		xsk_pool_dma_unmap(sq->xsk.pool, 0);

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests