netdev - Re: [PATCH net] virtio_net: split out ctrl buffer

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Message-ID: <201804191550.W8CM7WAa%fengguang.wu@intel.com>
Date:   Thu, 19 Apr 2018 16:05:05 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Mikulas Patocka <mpatocka@...hat.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        David Miller <davem@...emloft.net>,
        Jason Wang <jasowang@...hat.com>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [PATCH net] virtio_net: split out ctrl buffer

Hi Michael,

I love your patch! Yet something to improve:

[auto build test ERROR on net/master]

url:    https://github.com/0day-ci/linux/commits/Michael-S-Tsirkin/virtio_net-split-out-ctrl-buffer/20180419-145754
config: i386-randconfig-a0-201815 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/net/virtio_net.c: In function 'virtnet_free_queues':
>> drivers/net/virtio_net.c:2365:10: error: 'struct virtnet_info' has no member named 'err_ctrl'
     kfree(vi->err_ctrl);
             ^
   drivers/net/virtio_net.c: In function 'virtnet_alloc_queues':
>> drivers/net/virtio_net.c:2589:8: error: 'vq' undeclared (first use in this function)
     kfree(vq->ctrl);
           ^
   drivers/net/virtio_net.c:2589:8: note: each undeclared identifier is reported only once for each function it appears in

vim +2365 drivers/net/virtio_net.c

  2347	
  2348	static void virtnet_free_queues(struct virtnet_info *vi)
  2349	{
  2350		int i;
  2351	
  2352		for (i = 0; i < vi->max_queue_pairs; i++) {
  2353			napi_hash_del(&vi->rq[i].napi);
  2354			netif_napi_del(&vi->rq[i].napi);
  2355			netif_napi_del(&vi->sq[i].napi);
  2356		}
  2357	
  2358		/* We called napi_hash_del() before netif_napi_del(),
  2359		 * we need to respect an RCU grace period before freeing vi->rq
  2360		 */
  2361		synchronize_net();
  2362	
  2363		kfree(vi->rq);
  2364		kfree(vi->sq);
> 2365		kfree(vi->err_ctrl);
  2366	}
  2367	

---
0-DAY kernel test infrastructure                Open Source Technology Center
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