Hello,
I have 3 OVS bridges on the same host, connected to each other as
br1<->br2<->br3. br1 and br3 are connected to the docker container cA
via dpdkvhostuser port type (I know it is deprecated, the app works
this way only). The DPDK app running in cA generate packets, which
traverse bridges br1->br2->br3, then ends up back at the DPDK app.
This setup works fine.
Now I am trying to put each OVS bridge into its respective docker
container. I connect the containers with veth pairs, then add the veth
ports to the bridges. Next, I add a dpdkvhostuser port named SRC to
br1, so far so good. The moment I add a dpdkvhostuser port named SNK
to br3, ovs-vswitchd services in br1's and br3's containers segfault.
Following are the backtraces from each,
------------------br1's container---------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `ovs-vswitchd
unix:/usr/local/var/run/openvswitch/db.sock -vconsole:emer -vsyslo'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00005608fa0f321b in netdev_rxq_recv (rx=0x7ff13c34ee80,
batch=batch@entry=0x7ff1bbb4d890) at lib/netdev.c:702
702 retval = rx->netdev->netdev_class->rxq_recv(rx, batch);
[Current thread is 1 (Thread 0x7ff1bbb4e700 (LWP 376))]
(gdb) bt
#0 0x00005608fa0f321b in netdev_rxq_recv (rx=0x7ff13c34ee80,
batch=batch@entry=0x7ff1bbb4d890) at lib/netdev.c:702
#1 0x00005608fa0cce65 in dp_netdev_process_rxq_port (
pmd=pmd@entry=0x7ff1bbb4f010, rxq=0x5608fb651be0, port_no=1)
at lib/dpif-netdev.c:3279
#2 0x00005608fa0cd296 in pmd_thread_main (f_=<optimized out>)
at lib/dpif-netdev.c:4145
#3 0x00005608fa14a836 in ovsthread_wrapper (aux_=<optimized out>)
at lib/ovs-thread.c:348
#4 0x00007ff1c52517fc in start_thread (arg=0x7ff1bbb4e700)
at pthread_create.c:465
#5 0x00007ff1c4815b5f in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
------------------br3's container---------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `ovs-vswitchd
unix:/usr/local/var/run/openvswitch/db.sock -vconsole:emer -vsyslo'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x000055c517e3abcb in rte_mempool_free_memchunks ()
[Current thread is 1 (Thread 0x7f202351f300 (LWP 647))]
(gdb) bt
#0 0x000055c517e3abcb in rte_mempool_free_memchunks ()
#1 0x000055c517e3ad46 in rte_mempool_free.part ()
#2 0x000055c518218b78 in dpdk_mp_free (mp=0x7f603fe66a00)
at lib/netdev-dpdk.c:599
#3 0x000055c518218ff0 in dpdk_mp_free (mp=<optimized out>)
at lib/netdev-dpdk.c:593
#4 netdev_dpdk_mempool_configure (dev=0x7f1f7ffeac00) at lib/netdev-dpdk.c:629
#5 0x000055c51821a98d in dpdk_vhost_reconfigure_helper (dev=0x7f1f7ffeac00)
at lib/netdev-dpdk.c:3599
#6 0x000055c51821ac8b in netdev_dpdk_vhost_reconfigure (netdev=0x7f1f7ffebcc0)
at lib/netdev-dpdk.c:3624
#7 0x000055c51813fe6b in port_reconfigure (port=0x55c51a4522a0)
at lib/dpif-netdev.c:3341
#8 reconfigure_datapath (dp=dp@entry=0x55c51a46efc0) at lib/dpif-netdev.c:3822
#9 0x000055c5181403e8 in do_add_port (dp=dp@entry=0x55c51a46efc0,
devname=devname@entry=0x55c51a456520 "SNK",
type=0x55c51834f7bd "dpdkvhostuser", port_no=port_no@entry=1)
at lib/dpif-netdev.c:1584
#10 0x000055c51814059b in dpif_netdev_port_add (dpif=<optimized out>,
netdev=0x7f1f7ffebcc0, port_nop=0x7fffb4eef68c) at lib/dpif-netdev.c:1610
#11 0x000055c5181469be in dpif_port_add (dpif=0x55c51a469350,
netdev=netdev@entry=0x7f1f7ffebcc0, port_nop=port_nop@entry=0x7fffb4eef6ec)
at lib/dpif.c:579
---Type <return> to continue, or q <return> to quit---
#12 0x000055c5180f9f28 in port_add (ofproto_=0x55c51a464ee0,
netdev=0x7f1f7ffebcc0) at ofproto/ofproto-dpif.c:3645
#13 0x000055c5180ecafe in ofproto_port_add (ofproto=0x55c51a464ee0,
netdev=0x7f1f7ffebcc0, ofp_portp=ofp_portp@entry=0x7fffb4eef7e8) at
ofproto/ofproto.c:1999
#14 0x000055c5180d97e6 in iface_do_create (errp=0x7fffb4eef7f8,
netdevp=0x7fffb4eef7f0, ofp_portp=0x7fffb4eef7e8,
iface_cfg=0x55c51a46d590, br=0x55c51a4415b0)
at vswitchd/bridge.c:1799
#15 iface_create (port_cfg=0x55c51a46e210, iface_cfg=0x55c51a46d590,
br=0x55c51a4415b0) at vswitchd/bridge.c:1837
#16 bridge_add_ports__ (br=br@entry=0x55c51a4415b0,
wanted_ports=wanted_ports@entry=0x55c51a441690,
with_requested_port=with_requested_port@entry=true) at
vswitchd/bridge.c:931
#17 0x000055c5180db87a in bridge_add_ports
(wanted_ports=0x55c51a441690, br=0x55c51a4415b0) at
vswitchd/bridge.c:942
#18 bridge_reconfigure (ovs_cfg=ovs_cfg@entry=0x55c51a46ea80) at
vswitchd/bridge.c:661
#19 0x000055c5180df989 in bridge_run () at vswitchd/bridge.c:3016
#20 0x000055c517dbc535 in main (argc=<optimized out>, argv=<optimized
out>) at vswitchd/ovs-vswitchd.c:120
Note that /dev/hugepages of the host is shared with all containers. I
have a feeling that br3 is overwriting the hugepage file of br1. Any
ideas?
Regards,
Alan
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