[dpdk-users] Crash on symmetric_mp sample

[dpdk-users] Crash on symmetric_mp sample

[VERDOUX, Sylvain]

Hello dear DPDK devs/users,

I'm currently testing the DPDK symmetric_mp sample on an Intel X710 NIC and I face a crash in i40e_recv_pkts doing the following steps :
- start a first process : ./symmetric_mp -l 1 -n 4 -w 81:00.0 -w 81:00.1 --proc-type=primary -- -p 3 --num-procs=2 --proc-id 0
- start a second process : ./symmetric_mp -l 2 -n 4 -w 81:00.0 -w 81:00.1 --proc-type=secondary -- -p 3 --num-procs=2 --proc-id 1
- stop the primary process with a SIGINT (secondary process is still running nicely)
- restart the first process as a "secondary" : ./symmetric_mp -l 1 -n 4 -w 81:00.0 -w 81:00.1 --proc-type=secondary -- -p 3 --num-procs=2 --proc-id 0

According to the documentation on the symmetric_mp example this should work but I face a segfault.
Oh and I have deactivated ASLR as recommended.

I run this on a centOS 7 kernel 3.10.0-229.7.2.el7.x86_64.
Intel X710 10Gb Ethernet.
2x Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz.

I will try to compile dpdk in debug to be able to give you more info on the crash, but I wanted to know if you have already faced such issue ?

Best Regards,
Sylvain