[dpdk-users] [dpdk-dev] seg fault in InterVM communication using virtio

Yuanhan Liu yuanhan.liu at linux.intel.com
Thu Feb 23 07:27:14 CET 2017

On Wed, Feb 22, 2017 at 02:25:29PM +0530, mitali wrote:
> Hi Yuanhan,
> We are using virt-manager to start the VMs. We are attaching the image which
> shows the vNIC setup for the VMs.
> We have written our own dpdk application to send and receive UDP packets. The
> command we are using is
> ./build/app/dpdkapi -c 1 -- -p 1 where dpdkapi is our application.
> Inside the application we are sending and receiving packets from vNIC using
> rte_eth_tx_burst() and rte_eth_rx_burst().
> At the sender side after 127 packets the application stops and we observe a seg
> fault in dmesg. Using the print statements we observed that it faults in
> rte_eth_tx_burst(). All the 127 were received at the receiving VM.

Would you recompile dpdk with debug info enaled, which could be done by:

	make ... EXTRA_CFLAGS='-g3 -O0'

And run it with gdb then dump the call stack?


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