Hi,
In our experiment we are using OVS 2.4 with DPDK 2.0 with Centos 7.0 +
kernel 3.18.22.
We added few physical ports to the PMD thread and added to the bridge.
Also created KNI interface between vEth and the physical port part of the
bridge. We could send and receive the traffic via KNI.
When we attach a controller i.e. ovs-vsctl --no-wait set-controller br0
tcp:127.0.0.1:6653 we are seeing that kni_thread is crashed.
Crash is not seen when we don't have KNI interface present. Also, without
having controller added we are able to work with multiple pairs of vEth - PHY
via KNI.
Appreciating any hints on this topic!
Thanks
Samy
Below is the dump of the 'kmsg' reported.
<4>Stack:
<4> ffff880153937d48 ffff880153937d50 ffff880150814000 0000000000000001
<4> 000000002138f240 ffffffff810cf36b ffff880153937df8 ffffffff82055980
<4> 0000000100250151 0000000000000282 ffff880153937da8 ffffffff810d042f
<4>Call Trace:
<4> [<ffffffff810cf36b>] ? lock_timer_base.isra.35+0x2b/0x50
<4> [<ffffffff810d042f>] ? try_to_del_timer_sync+0x4f/0x70
<4> [<ffffffff810d04a2>] ? del_timer_sync+0x52/0x60
<4> [<ffffffff81653bb6>] ? schedule_timeout+0x166/0x290
<4> [<ffffffff810cf240>] ? internal_add_timer+0x80/0x80
<4> [<ffffffffa041743f>] kni_net_rx+0xf/0x20 [rte_kni]
<4> [<ffffffffa041577e>] kni_thread_single+0x5e/0xb0 [rte_kni]
<4> [<ffffffffa0415720>] ? kni_release+0x100/0x100 [rte_kni]
<4> [<ffffffff81089bc9>] kthread+0xc9/0xe0
<4> [<ffffffff81089b00>] ? kthread_create_on_node+0x180/0x180
<4> [<ffffffff81654f18>] ret_from_fork+0x58/0x90
<4> [<ffffffff81089b00>] ? kthread_create_on_node+0x180/0x180
<4>Code: 48 89 85 b8 fe ff ff eb 0c 0f 1f 44 00 00 48 8b 13 48 83 c3 08 49 8b
8d a8 01 00 00 4d 8b b5 a0 01 00 00 31 ff 48 29 ca 4c 01 f2 <44> 0f b7 62 22 0f
b7 42 12 48 03 02 ba 20 00 00 00 45 0f b7 cc
<1>RIP [<ffffffffa0416905>] kni_net_rx_normal+0x145/0x2c0 [rte_kni]
<4> RSP <ffff880153937d28>
<4>---[ end trace 8a2acec3270c7c4b ]---
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