[ovs-discuss] vhost_net driver version and ovs-dpdk versions needs to compatible ?

Pradeep K.S pradeepks.hpt at gmail.com
Sat Jan 19 04:54:27 UTC 2019


Hi,

I have ovs-dpdk setup and have spawned a VM with 2 vhost-user ports. I am
using vhost in  dpdkvhostuserclient mode.  If I reboot the guest vm by
issuing reboot command i am getting SEGV , looked at the stack trace , (my
guess it might be accessing old Queue memory).

is there a compatibility matrix for "vhost_net" driver used in the guest
and ovs-dpdk version.

dpdk-17.11-7
openvswitch-2.9.0


#0  0x00005625f482f34c in rte_vhost_dequeue_burst () <--- Its trying to
access VM memory ,on reboot
#1  0x00005625f49762e4 in netdev_dpdk_vhost_rxq_recv ()
#2  0x00005625f48c2671 in netdev_rxq_recv ()
#3  0x00005625f489bc1f in dp_netdev_process_rxq_port ()
#4  0x00005625f489c02a in pmd_thread_main ()
#5  0x00005625f4918cb6 in ovsthread_wrapper ()
#6  0x00007f817384bdc5 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8172c4e73d in clone () from /lib64/libc.so.6


-- 
Thanks and Regards,
Pradeep.K.S.
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