Re: [PATCH net-next v5 8/8] vhost_net: Replace rx_ring with calls of TUN/TAP wrappers

[kernel test robot]

Hi Simon,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Simon-Schippers/__ptr_ring_full_next-Returns-if-ring-will-be-full-after-next-insertion/20250924-180633
base:   net-next/main
patch link:    https://lore.kernel.org/r/20250922221553.47802-9-simon.schippers%40tu-dortmund.de
patch subject: [PATCH net-next v5 8/8] vhost_net: Replace rx_ring with calls of TUN/TAP wrappers
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20250926/202509262102.4AmV1Mms-lkp@xxxxxxxxx/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250926/202509262102.4AmV1Mms-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509262102.4AmV1Mms-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/vhost/net.c:197:3: error: expected expression
     197 |                 WARN_ON_ONCE();
         |                 ^
   include/asm-generic/bug.h:111:34: note: expanded from macro 'WARN_ON_ONCE'
     111 |         int __ret_warn_on = !!(condition);                      \
         |                                         ^
   1 error generated.


vim +197 drivers/vhost/net.c

   178	
   179	static int vhost_net_buf_produce(struct vhost_net_virtqueue *nvq,
   180			struct sock *sk)
   181	{
   182		struct file *file = sk->sk_socket->file;
   183		struct vhost_net_buf *rxq = &nvq->rxq;
   184	
   185		rxq->head = 0;
   186	
   187		switch (nvq->type) {
   188		case TUN:
   189			rxq->tail = tun_ring_consume_batched(file,
   190					rxq->queue, VHOST_NET_BATCH);
   191			break;
   192		case TAP:
   193			rxq->tail = tap_ring_consume_batched(file,
   194					rxq->queue, VHOST_NET_BATCH);
   195			break;
   196		case IF_NONE:
 > 197			WARN_ON_ONCE();
   198		}
   199	
   200		return rxq->tail;
   201	}
   202	

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