Hello,
I am using dpdk 2.2.0 in this VM where several NIC ports are available.
Also, uio, kni drivers are installed.
[root@mylinux]# lsmod | grep uio
igb_uio 13224 0
uio 19259 1 igb_uio
[root@mylinux]# lsmod | grep kni
rte_kni 294375 0
i2c_core 40325 2 i2c_dev,rte_kni
[root@mylinux]# uname -r
3.10.0-229.20.1.el7.x86_64
Weirdly, once I bind a network port to dpdk, after that, when I run 'ip
addr' or 'ip link add ~vlan' command against non-dpdk port , this VM's
Linux kernel hangs.
For example, when I run 'ip link add ~vlan' command, then following dmesg
is seen and Linux hangs.
Any idea on root cause/how to fix?
{noformat}
[ 4884.158003] virtio dm_mirror dm_region_hash dm_log dm_mod loop [last
unloaded: openvswitch]
[ 4884.158003] CPU: 3 PID: 15060 Comm: dpdk_nic_bind.p Tainted: GF
O-------------- 3.10.0-229.20.1.el7.x86_64 #1
[ 4884.158003] Hardware name: Bochs ovs-cloudinit-vm, BIOS Bochs 01/01/2011
[ 4884.158003] task: ffff88038d045b00 ti: ffff880390e34000 task.ti:
ffff880390e34000
[ 4884.158003] RIP: 0010:[<ffffffffa006f173>] [<ffffffffa006f173>]
virtnet_send_command.constprop.29+0x103/0x160 [virtio_net]
[ 4884.158003] RSP: 0018:ffff880390e379f8 EFLAGS: 00000246
[ 4884.158003] RAX: 0000000000000000 RBX: 00000000000163e0 RCX:
ffff88038fbd3000
[ 4884.158003] RDX: 000000000000c0f0 RSI: ffff880390e379fc RDI:
ffff88038e140000
[ 4884.158003] RBP: ffff880390e37a90 R08: 00000000000163e0 R09:
ffffffffa005059c
[ 4884.158003] R10: 0000000000000003 R11: 0000000000000000 R12:
0000000000000003
[ 4884.158003] R13: 0000000000000000 R14: 0000000000000003 R15:
ffff880390e379e8
[ 4884.158003] FS: 00007fc39b216740(0000) GS:ffff8803a80c0000(0000) knl
GS:0000000000000000
[ 4884.158003] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 4884.158003] CR2: 00007fc39b221000 CR3: 000000038cb6f000 CR4:
00000000000007e0
[ 4884.158003] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 4884.158003] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 4884.158003] Stack:
[ 4884.158003] 000000000102ff46 ffff880390e37a20 ffff880390e37aa8
ffff880390e37a40
[ 4884.158003] ffffffff815bb3ae ffffea000e438dc2 00000002000009fa
0000000000000000
[ 4884.158003] 0000000000000000 ffffea000e438dc2 00000001000009f9
0000000000000000
[ 4884.158003] Call Trace:
[ 4884.158003] [<ffffffff815bb3ae>] ? fib6_clean_all+0xae/0x100
[ 4884.158003] [<ffffffffa006f3f0>] virtnet_vlan_rx_kill_vid+0x50/0x90
[virtio_net]
[ 4884.158003] [<ffffffff815e67e3>] vlan_vid_del+0x113/0x170
[ 4884.158003] [<ffffffffa02b681b>] vlan_device_event+0x65b/0x690 [8021q]
[ 4884.158003] [<ffffffff8160fdec>] notifier_call_chain+0x4c/0x70
[ 4884.158003] [<ffffffff8109d456>] raw_notifier_call_chain+0x16/0x20
[ 4884.158003] [<ffffffff814f78fd>] call_netdevice_notifiers+0x2d/0x60
[ 4884.158003] [<ffffffff814f7bac>] dev_close_many+0xcc/0x120
[ 4884.158003] [<ffffffff814f8ee8>] rollback_registered_many+0xa8/0x220
[ 4884.158003] [<ffffffff814f90a0>] rollback_registered+0x40/0x70
[ 4884.158003] [<ffffffff814fa388>] unregister_netdevice_queue+0x48/0x80
[ 4884.158003] [<ffffffff814fa3dc>] unregister_netdev+0x1c/0x30
[ 4884.158003] [<ffffffffa006e0e3>] virtnet_remove+0x43/0x80 [virtio_net]
[ 4884.158003] [<ffffffffa002f119>] virtio_dev_remove+0x49/0xd0 [virtio]
[ 4884.158003] [<ffffffff813d2cbf>] __device_release_driver+0x7f/0xf0
[ 4884.158003] [<ffffffff813d2d53>] device_release_driver+0x23/0x30
[ 4884.158003] [<ffffffff813d24c8>] bus_remove_device+0x108/0x180
[ 4884.158003] [<ffffffff813ce9e5>] device_del+0x135/0x1f0
[ 4884.158003] [<ffffffff813ceabe>] device_unregister+0x1e/0x60
[ 4884.158003] [<ffffffffa002f426>] unregister_virtio_device+0x16/0x30
[virtio]
[ 4884.158003] [<ffffffffa01c852b>] virtio_pci_remove+0x2b/0x70
[virtio_pci]
[ 4884.158003] [<ffffffff813097bb>] pci_device_remove+0x3b/0xb0
[ 4884.158003] [<ffffffff813d2cbf>] __device_release_driver+0x7f/0xf0
[ 4884.158003] [<ffffffff813d2d53>] device_release_driver+0x23/0x30
[ 4884.158003] [<ffffffff813d16bd>] driver_unbind+0xbd/0xe0
[ 4884.158003] [<ffffffff813d0bf4>] drv_attr_store+0x24/0x40
[ 4884.158003] [<ffffffff8123cfc6>] sysfs_write_file+0xc6/0x140
[ 4884.158003] [<ffffffff811c6a2d>] vfs_write+0xbd/0x1e0
[ 4884.158003] [<ffffffff8160fce3>] ? trace_do_page_fault+0x43/0x100
[ 4884.158003] [<ffffffff811c7478>] SyS_write+0x58/0xb0
[ 4884.158003] [<ffffffff81614409>] system_call_fastpath+0x16/0x1b
[ 4884.158003] Code: c5 70 ff ff ff e8 2e 11 fe ff 48 8b 7b 08 e8 c5 02 fe
ff eb 12 0f 1f 00 48 8b 7b 08 e8 77 ff fd ff 84 c0 75 17 f3 90 48 8b 7b 08
<48> 8d b5 6c ff ff ff e8 01 01 fe ff 48 85 c0 74 dc 80 bd 69 ff
{noformat}
