diff options
Diffstat (limited to 'results/scraper/launchpad-without-comments/1558175')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1558175 | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1558175 b/results/scraper/launchpad-without-comments/1558175 new file mode 100644 index 000000000..4ab84b2d0 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1558175 @@ -0,0 +1,415 @@ +virtio: vm killed (Guest moved used index) + +Hello, + +I ran a DPDK application with virtio ports. If I killed and relaunched it, VM is +killed by qemu with the following message: +> qemu-system-x86_64: Guest moved used index from 571 to 0 + +If I ran the same application with e1000 ports, I haven't this issue. + +Network topology +================ + +I used two VM machines with last qemu-2.5 with two virtio-net netdevs. Both +netdevs are connected through a VDE switch. + +On testnode, I used a Debian 8 (3.16) and virtio-net linux drivers. On DUT, I +used a Ubuntu 14.04 (3.13) with DPDK (next/16_04) with virtio pmd. + ++-------------------------------------------------------------+ +| | +| +-------------+ +-------------------+ | +| | | | | | +| | Testnode | | DUT | | +| | Debian 8 | | Ubuntu 14.04 | | +| | | +----------+ | | | +| | eth0 +----+ VDE +----+ eth0 pmd_virtio | | +| | virtio | +----------+ | 00:04.0 | | +| | | | DE:ED:01:0C:DD:CC | | +| | | | | | +| | | +----------+ | | | +| | eth1 +----+ VDE +----+ eth1 pmd_virtio | | +| | virtio | +----------+ | 00:05.0 | | +| | | | DE:ED:02:04:01:60 | | +| | | | | | +| +-------------+ +-------------------+ | +| qemu 2.5 qemu 2.5 | +| | +| | +| Hypervisor | +| Debian 8 | +| Kernel 3.16 | ++-------------------------------------------------------------+ + +Steps +===== + +1. Start a DPDK application using virtio ports +2. Send traffic over those ports (using ping flood ...) +3. Kill this DPDK application (sending SIGKILL, making it crash etc...) +4. Restart this DPDK application with the same configuration +5. During EAL initialization, if an incoming packet is received on a virtio + port, qemu exits (error code 1) with the following message: +> qemu-system-x86_64: Guest moved used index from 571 to 0 + +NOTE: This issue is *NOT* seen with e1000 interface + +Configuration +============= + +Hypervisor +----------- +Debian 8 +Kernel 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u5 + +Qemu +---- + +qemu 2.5 (vanilla) +./configure --enable-kvm --enable-vhost-net --enable-vde --target-list="x86_64-softmmu" --enable-debug --extra-cflags="-O0 -g" + +> qemu-system-x86_64 -k fr --enable-kvm -m 4G -cpu host -smp \ + sockets=1,cores=1,threads=2 -serial telnet::46528,server,nowait -serial null \ + -qmp tcp::47257,server,nowait -monitor telnet::59305,server,nowait -hda \ + "/opt/vm/ubuntu-14.04-template.qcow2" -snapshot -vga none -display none \ + -netdev vde,id=tapdeed01417a99,sock=L.vdesock -device \ + virtio-net,mac=DE:ED:01:0C:DD:CC,addr=04,netdev=tapdeed01417a99 -netdev \ + vde,id=tapdeed021a7b37,sock=R.vdesock -device \ + virtio-net,mac=DE:ED:02:04:01:60,addr=05,netdev=tapdeed021a7b37 + +On Testnode +----------- + +Configure interface to send continuous traffic to PMD +> ip link set dev eth0 up +> ip addr add 1.1.1.1/24 dev eth0 +> ip neigh add 1.1.1.2 lladdr DE:ED:01:0C:DD:CC dev eth0 +> ping -q -f 1.1.1.2 + +On DUT +------ + +Configure and start testpmd (a standard DPDK application) + +> modprobe uio +> modprobe igb_uio +> mkdir -p /mnt/huge +> mount -t hugetlbfs nodev /mnt/huge +> echo 64 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages +> dpdk_nic_bind --bind=igb_uio 0000:00:04.0 +> dpdk_nic_bind --bind=igb_uio 0000:00:05.0 +> testpmd --huge-dir=/mnt/huge -n 4 -l 0-1 --socket-mem 128 -w 0000:00:04.0 \ + -w 0000:00:05.0 --log-level 8 -- -i --nb-cores=1 --nb-ports=2\ + --total-num-mbufs=1025 +EAL: Detected lcore 0 as core 0 on socket 0 +EAL: Detected lcore 1 as core 0 on socket 0 +EAL: Support maximum 255 logical core(s) by configuration. +EAL: Detected 2 lcore(s) +EAL: Probing VFIO support... +EAL: Module /sys/module/vfio_pci not found! error 2 (No such file or directory) +EAL: VFIO modules not loaded, skipping VFIO support... +EAL: Setting up physically contiguous memory... +EAL: Ask a virtual area of 0x4600000 bytes +EAL: Virtual area found at 0x7fbcbf000000 (size = 0x4600000) +EAL: Ask a virtual area of 0xc00000 bytes +EAL: Virtual area found at 0x7fbcbe200000 (size = 0xc00000) +EAL: Ask a virtual area of 0x400000 bytes +EAL: Virtual area found at 0x7fbcbdc00000 (size = 0x400000) +EAL: Ask a virtual area of 0x200000 bytes +EAL: Virtual area found at 0x7fbcbd800000 (size = 0x200000) +EAL: Ask a virtual area of 0x200000 bytes +EAL: Virtual area found at 0x7fbcbd400000 (size = 0x200000) +EAL: Ask a virtual area of 0x1c00000 bytes +EAL: Virtual area found at 0x7fbcbb600000 (size = 0x1c00000) +EAL: Ask a virtual area of 0x600000 bytes +EAL: Virtual area found at 0x7fbcbae00000 (size = 0x600000) +EAL: Ask a virtual area of 0x200000 bytes +EAL: Virtual area found at 0x7fbcbaa00000 (size = 0x200000) +EAL: Ask a virtual area of 0x200000 bytes +EAL: Virtual area found at 0x7fbcba600000 (size = 0x200000) +EAL: Requesting 64 pages of size 2MB from socket 0 +EAL: TSC frequency is ~3192572 KHz +EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using unreliable clock cycles ! +EAL: Master lcore 0 is ready (tid=c5707900;cpuset=[0]) +EAL: lcore 1 is ready (tid=c3ffd700;cpuset=[1]) +EAL: PCI device 0000:00:04.0 on NUMA socket -1 +EAL: probe driver: 1af4:1000 rte_virtio_pmd +EAL: PCI memory mapped at 0x7fbcc3600000 +PMD: virtio_read_caps(): [40] skipping non VNDR cap id: 11 +PMD: virtio_read_caps(): no modern virtio pci device found. +PMD: vtpci_init(): trying with legacy virtio pci. +PMD: virtio_resource_init_by_uio(): PCI Port IO found start=0xc020 with size=0x20 +PMD: virtio_negotiate_features(): guest_features before negotiate = 100cf8020 +PMD: virtio_negotiate_features(): host_features before negotiate = 79bf8064 +PMD: virtio_negotiate_features(): features after negotiate = 8f8020 +PMD: eth_virtio_dev_init(): PORT MAC: DE:ED:01:0C:DD:CC +PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported +PMD: virtio_dev_cq_queue_setup(): >> +PMD: virtio_dev_queue_setup(): setting up queue: 2 +PMD: virtio_dev_queue_setup(): vq_size: 64 nb_desc:0 +PMD: virtio_dev_queue_setup(): vring_size: 4612, rounded_vring_size: 8192 +PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x134f35000 +PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7fbcbaf35000 +PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1 +PMD: eth_virtio_dev_init(): config->status=1 +PMD: eth_virtio_dev_init(): PORT MAC: DE:ED:01:0C:DD:CC +PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1 +PMD: eth_virtio_dev_init(): port 0 vendorID=0x1af4 deviceID=0x1000 +PMD: virtio_dev_vring_start(): >> +PMD: virtio_dev_cq_start(): VQ: - size=64; free=64; used=0; desc_head_idx=0; avail.idx=0; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +EAL: PCI device 0000:00:05.0 on NUMA socket -1 +EAL: probe driver: 1af4:1000 rte_virtio_pmd +EAL: PCI memory mapped at 0x7fbcc3601000 +PMD: virtio_read_caps(): [40] skipping non VNDR cap id: 11 +PMD: virtio_read_caps(): no modern virtio pci device found. +PMD: vtpci_init(): trying with legacy virtio pci. +PMD: virtio_resource_init_by_uio(): PCI Port IO found start=0xc040 with size=0x20 +PMD: virtio_negotiate_features(): guest_features before negotiate = 100cf8020 +PMD: virtio_negotiate_features(): host_features before negotiate = 79bf8064 +PMD: virtio_negotiate_features(): features after negotiate = 8f8020 +PMD: eth_virtio_dev_init(): PORT MAC: DE:ED:02:04:01:60 +PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported +PMD: virtio_dev_cq_queue_setup(): >> +PMD: virtio_dev_queue_setup(): setting up queue: 2 +PMD: virtio_dev_queue_setup(): vq_size: 64 nb_desc:0 +PMD: virtio_dev_queue_setup(): vring_size: 4612, rounded_vring_size: 8192 +PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x134f30000 +PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7fbcbaf30000 +PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1 +PMD: eth_virtio_dev_init(): config->status=1 +PMD: eth_virtio_dev_init(): PORT MAC: DE:ED:02:04:01:60 +PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1 +PMD: eth_virtio_dev_init(): port 1 vendorID=0x1af4 deviceID=0x1000 +PMD: virtio_dev_vring_start(): >> +PMD: virtio_dev_cq_start(): VQ: - size=64; free=64; used=0; desc_head_idx=0; avail.idx=0; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +Interactive-mode selected +Configuring Port 0 (socket 0) +PMD: virtio_dev_configure(): configure +PMD: virtio_dev_tx_queue_setup(): >> +PMD: virtio_dev_queue_setup(): setting up queue: 1 +PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:512 +PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288 +PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x134eac000 +PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7fbcbaeac000 +PMD: virtio_dev_rx_queue_setup(): >> +PMD: virtio_dev_queue_setup(): setting up queue: 0 +PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:128 +PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288 +PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x134ea6000 +PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7fbcbaea6000 +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 0 is up +PMD: virtio_dev_rxtx_start(): >> +PMD: virtio_dev_vring_start(): >> +PMD: virtio_dev_vring_start(): Allocated 256 bufs +PMD: virtio_dev_rxtx_start(): VQ: - size=256; free=0; used=0; desc_head_idx=32768; avail.idx=256; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +PMD: virtio_dev_vring_start(): >> +PMD: virtio_dev_rxtx_start(): VQ: - size=256; free=256; used=0; desc_head_idx=0; avail.idx=0; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +PMD: virtio_dev_start(): nb_queues=1 +PMD: virtio_dev_start(): Notified backend at initialization +PMD: virtio_dev_start(): VQ: - size=256; free=0; used=0; desc_head_idx=32768; avail.idx=256; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +PMD: virtio_dev_start(): VQ: - size=256; free=256; used=0; desc_head_idx=0; avail.idx=0; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +rte_eth_dev_config_restore: port 0: MAC address array not supported +PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7fbcbaf37880 vq = 0x7fbcbaf37880 +PMD: virtio_send_command(): vq->vq_queue_index = 2 +PMD: virtio_send_command(): vq->vq_free_cnt=64 +vq->vq_desc_head_idx=0 +PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7fbcbaf37880 vq = 0x7fbcbaf37880 +PMD: virtio_send_command(): vq->vq_queue_index = 2 +PMD: virtio_send_command(): vq->vq_free_cnt=64 +vq->vq_desc_head_idx=0 +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 0 is up +Port 0: DE:ED:01:0C:DD:CC +Configuring Port 1 (socket 0) +PMD: virtio_dev_configure(): configure +PMD: virtio_dev_tx_queue_setup(): >> +PMD: virtio_dev_queue_setup(): setting up queue: 1 +PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:512 +PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288 +PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x134ea1000 +PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7fbcbaea1000 +PMD: virtio_dev_rx_queue_setup(): >> +PMD: virtio_dev_queue_setup(): setting up queue: 0 +PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:128 +PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288 +PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x134e9c000 +PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7fbcbae9c000 +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 1 is up +PMD: virtio_dev_rxtx_start(): >> +PMD: virtio_dev_vring_start(): >> +PMD: virtio_dev_vring_start(): Allocated 256 bufs +PMD: virtio_dev_rxtx_start(): VQ: - size=256; free=0; used=0; desc_head_idx=32768; avail.idx=256; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +PMD: virtio_dev_vring_start(): >> +PMD: virtio_dev_rxtx_start(): VQ: - size=256; free=256; used=0; desc_head_idx=0; avail.idx=0; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +PMD: virtio_dev_start(): nb_queues=1 +PMD: virtio_dev_start(): Notified backend at initialization +PMD: virtio_dev_start(): VQ: - size=256; free=0; used=0; desc_head_idx=32768; avail.idx=256; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +PMD: virtio_dev_start(): VQ: - size=256; free=256; used=0; desc_head_idx=0; avail.idx=0; used_cons_idx=0; used.idx=0; avail.flags=0x1; used.flags=0x0 +rte_eth_dev_config_restore: port 1: MAC address array not supported +PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7fbcbaf325c0 vq = 0x7fbcbaf325c0 +PMD: virtio_send_command(): vq->vq_queue_index = 2 +PMD: virtio_send_command(): vq->vq_free_cnt=64 +vq->vq_desc_head_idx=0 +PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7fbcbaf325c0 vq = 0x7fbcbaf325c0 +PMD: virtio_send_command(): vq->vq_queue_index = 2 +PMD: virtio_send_command(): vq->vq_free_cnt=64 +vq->vq_desc_head_idx=0 +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 1 is up +Port 1: DE:ED:02:04:01:60 +Checking link statuses... +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 0 is up +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 1 is up +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 0 is up +Port 0 Link Up - speed 10000 Mbps - full-duplex +PMD: virtio_dev_link_update(): Get link status from hw +PMD: virtio_dev_link_update(): Port 1 is up +Port 1 Link Up - speed 10000 Mbps - full-duplex +Done +PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7fbcbaf37880 vq = 0x7fbcbaf37880 +PMD: virtio_send_command(): vq->vq_queue_index = 2 +PMD: virtio_send_command(): vq->vq_free_cnt=64 +vq->vq_desc_head_idx=0 +PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7fbcbaf325c0 vq = 0x7fbcbaf325c0 +PMD: virtio_send_command(): vq->vq_queue_index = 2 +PMD: virtio_send_command(): vq->vq_free_cnt=64 +vq->vq_desc_head_idx=0 +testpmd> start + io packet forwarding - CRC stripping disabled - packets/burst=32 + nb forwarding cores=1 - nb forwarding ports=2 + RX queues=1 - RX desc=128 - RX free threshold=0 + RX threshold registers: pthresh=0 hthresh=0 wthresh=0 + TX queues=1 - TX desc=512 - TX free threshold=0 + TX threshold registers: pthresh=0 hthresh=0 wthresh=0 + TX RS bit threshold=0 - TXQ flags=0xf00 + +... +[wait a few seconds] +... + +Kill the application +> kill -9 $(pidof testpmd) (On another shell) + +Relaunch the application +> testpmd --huge-dir=/mnt/huge -n 4 -l 0-1 --socket-mem 128 -w 0000:00:04.0 \ + -w 0000:00:05.0 --log-level 8 -- -i --nb-cores=1 --nb-ports=2 \ + --total-num-mbufs=1025 +EAL: Detected lcore 0 as core 0 on socket 0 +EAL: Detected lcore 1 as core 0 on socket 0 +EAL: Support maximum 255 logical core(s) by configuration. +EAL: Detected 2 lcore(s) +EAL: Probing VFIO support... +EAL: Module /sys/module/vfio_pci not found! error 2 (No such file or directory) +EAL: VFIO modules not loaded, skipping VFIO support... +EAL: Setting up physically contiguous memory... +EAL: Ask a virtual area of 0x4400000 bytes +EAL: Virtual area found at 0x7f86cde00000 (size = 0x4400000) +EAL: Ask a virtual area of 0x400000 bytes +EAL: Virtual area found at 0x7f86cd800000 (size = 0x400000) +EAL: Ask a virtual area of 0x400000 bytes +EAL: Virtual area found at 0x7f86cd200000 (size = 0x400000) +EAL: Ask a virtual area of 0x200000 bytes +EAL: Virtual area found at 0x7f86cce00000 (size = 0x200000) +EAL: Ask a virtual area of 0xc00000 bytes +EAL: Virtual area found at 0x7f86cc000000 (size = 0xc00000) +EAL: Ask a virtual area of 0x1c00000 bytes +EAL: Virtual area found at 0x7f86ca200000 (size = 0x1c00000) +EAL: Ask a virtual area of 0x600000 bytes +EAL: Virtual area found at 0x7f86c9a00000 (size = 0x600000) +EAL: Ask a virtual area of 0x400000 bytes +EAL: Virtual area found at 0x7f86c9400000 (size = 0x400000) +EAL: Requesting 64 pages of size 2MB from socket 0 +... + +VM has been killed by qemu with the following error +> qemu-system-x86_64: Guest moved used index from 570 to 0 + +Debugging +--------- + +With GDB, I have got this backtrace for Qemu + +(gdb) bt full +#0 __GI_exit (status=1) at exit.c:104 +No locals. +#1 0x00007f13cb53412e in virtqueue_num_heads (vq=0x7f13ce28d4c0, idx=592) + at /tmp/qemu/qemu-2.5.0/hw/virtio/virtio.c:320 + num_heads = 64944 +#2 0x00007f13cb53444e in virtqueue_get_avail_bytes (vq=0x7f13ce28d4c0, in_bytes=0x7fff5c036270, + out_bytes=0x7fff5c036274, max_in_bytes=110, max_out_bytes=0) at /tmp/qemu/qemu-2.5.0/hw/virtio/virtio.c:381 + idx = 592 + total_bufs = 0 + in_total = 0 + out_total = 0 +#3 0x00007f13cb5344b6 in virtqueue_avail_bytes (vq=0x7f13ce28d4c0, in_bytes=110, out_bytes=0) + at /tmp/qemu/qemu-2.5.0/hw/virtio/virtio.c:447 + in_total = 1543725744 + out_total = 32767 +#4 0x00007f13cb51ad6b in virtio_net_has_buffers (q=0x7f13ce22cea0, bufsize=110) + at /tmp/qemu/qemu-2.5.0/hw/net/virtio-net.c:899 + n = 0x7f13cda08f18 +#5 0x00007f13cb51b37d in virtio_net_receive (nc=0x7f13cdf96490, + buf=0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b", size=98) + at /tmp/qemu/qemu-2.5.0/hw/net/virtio-net.c:1037 + n = 0x7f13cda08f18 + q = 0x7f13ce22cea0 + vdev = 0x7f13cda08f18 + __func__ = "virtio_net_receive" + mhdr_sg = {{iov_base = 0x7f1365fda43e, iov_len = 2}, {iov_base = 0x0, iov_len = 0} <repeats 1023 times>} + mhdr = {hdr = {flags = 0 '\000', gso_type = 0 '\000', hdr_len = 0, gso_size = 0, csum_start = 0, + csum_offset = 0}, num_buffers = 1} + mhdr_cnt = 0 + offset = 98 + i = 1 + guest_offset = 12 + __PRETTY_FUNCTION__ = "virtio_net_receive" +#6 0x00007f13cb75da86 in nc_sendv_compat (nc=0x7f13cdf96490, iov=0x7fff5c057440, iovcnt=1, flags=0) at net/net.c:717 + buf = '\000' <repeats 416 times>... + buffer = 0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b" + offset = 98 +#7 0x00007f13cb75db3e in qemu_deliver_packet_iov (sender=0x7f13cc902eb0, flags=0, iov=0x7fff5c057440, iovcnt=1, + opaque=0x7f13cdf96490) at net/net.c:741 + nc = 0x7f13cdf96490 + ret = 0 +#8 0x00007f13cb75fa5f in qemu_net_queue_deliver (queue=0x7f13cdf966b0, sender=0x7f13cc902eb0, flags=0, + data=0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b", size=98) at net/queue.c:163 + ret = -1 + iov = {iov_base = 0x7fff5c057580, iov_len = 98} +#9 0x00007f13cb75fb7b in qemu_net_queue_send (queue=0x7f13cdf966b0, sender=0x7f13cc902eb0, flags=0, + data=0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b", size=98, sent_cb=0x0) at net/queue.c:198 + ret = 139722994604174 +#10 0x00007f13cb75d8d9 in qemu_send_packet_async_with_flags (sender=0x7f13cc902eb0, flags=0, + buf=0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b", size=98, sent_cb=0x0) at net/net.c:677 + queue = 0x7f13cdf966b0 + ret = 0 +#11 0x00007f13cb75d911 in qemu_send_packet_async (sender=0x7f13cc902eb0, + buf=0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b", size=98, sent_cb=0x0) at net/net.c:684 +No locals. +#12 0x00007f13cb75d93e in qemu_send_packet (nc=0x7f13cc902eb0, + buf=0x7fff5c057580 "\336\355\001\246\223t\336\355\001\211\371\360\b", size=98) at net/net.c:690 +No locals. +#13 0x00007f13cb76b49e in vde_to_qemu (opaque=0x7f13cc902eb0) at net/vde.c:47 + s = 0x7f13cc902eb0 + buf = "[...]" + size = 98 +[...] + +According to GDB, there is no available vring +(gdb) up +#1 0x00007f13cb53412e in virtqueue_num_heads (vq=0x7f13ce28d4c0, idx=592) + at /tmp/qemu/qemu-2.5.0/hw/virtio/virtio.c:320 +320 exit(1); +(gdb) p num_heads +$1 = 64944 +(gdb) p vq->vring.num +$2 = 256 +(gdb) p idx +$3 = 592 +(gdb) p vring_avail_idx(vq) +$5 = 0 \ No newline at end of file |