Hi Xuan, url: https://github.com/0day-ci/linux/commits/Xuan-Zhuo/virtio-net-support-xdp-socket-zero-copy-xmit/20210105-171505 base: https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master config: i386-randconfig-m021-20210105 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
New smatch warnings:
drivers/net/virtio_net.c:2669 virtnet_xsk_timeout() warn: test_bit() takes a
bit number
drivers/net/virtio_net.c:2899 virtnet_xsk_run() warn: test_bit() takes a bit
number
drivers/net/virtio_net.c:2982 virtnet_xsk_wakeup() warn: test_bit() takes a bit
number
Old smatch warnings:
drivers/net/virtio_net.c:2908 virtnet_xsk_run() warn: test_bit() takes a bit
number
drivers/net/virtio_net.c:2918 virtnet_xsk_run() warn: test_bit() takes a bit
number
drivers/net/virtio_net.c:2951 virtnet_xsk_run() warn: test_bit() takes a bit
number
drivers/net/virtio_net.c:3073 virtnet_config_changed_work() error:
uninitialized symbol 'v'.
vim +2669 drivers/net/virtio_net.c
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2663 static enum hrtimer_restart
virtnet_xsk_timeout(struct hrtimer *timer)
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2664 {
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2665 struct send_queue *sq;
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2666
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2667 sq =
container_of(timer, struct send_queue, xsk.timer);
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2668
265d3cdead3bd6 Xuan Zhuo 2021-01-05 @2669
clear_bit(VIRTNET_STATE_XSK_TIMER, &sq->xsk.state);
This is a double shift bug like BIT(BIT(foo)).
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2670
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2671
virtqueue_napi_schedule(&sq->napi, sq->vq);
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2672
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2673 return
HRTIMER_NORESTART;
265d3cdead3bd6 Xuan Zhuo 2021-01-05 2674 }
---
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