I updated to openvswitch 1.9.3, and am still getting segfaults. Seems like
there is some bad pointer math or memory corruption. Brief gdb info below.
I don't know anything about the internals so can't really help unwind the
stack and figure out what's wrong. If it helps, I can provide a core and
binary (they're kind of big so not attaching it here until requested).
In the gdb session below, the netdev ptr that's passed in is bad, causing
the segfault, but probably not the source of the problem.
Program received signal SIGSEGV, Segmentation fault.
netdev_get_etheraddr (netdev=0x6464613131646164, mac=0x18d33e6 "") at
lib/netdev.c:495
495 return
netdev_get_dev(netdev)->netdev_class->get_etheraddr(netdev, mac);
(gdb) bt
#0 netdev_get_etheraddr (netdev=0x6464613131646164, mac=0x18d33e6 "") at
lib/netdev.c:495
#1 0x0000000000417cc3 in send_bpdu_cb (pkt=0x18cfe40, port_num=13,
ofproto_=0x184e6d0) at ofproto/ofproto-dpif.c:1378
#2 0x0000000000477e95 in stp_send_bpdu (p=0x189f788, bpdu=0x7fff29d523d0,
bpdu_size=35) at lib/stp.c:1347
#3 0x00000000004782e0 in stp_transmit_config (p=0x189f788) at lib/stp.c:855
#4 0x00000000004783c0 in stp_config_bpdu_generation (stp=0x189f1c0) at
lib/stp.c:912
#5 0x0000000000478c54 in stp_hello_timer_expiry (stp=0x189f1c0) at
lib/stp.c:1154
#6 stp_tick (stp=0x189f1c0, ms=<optimized out>) at lib/stp.c:306
#7 0x0000000000420f6e in stp_run (ofproto=0x184e6d0) at
ofproto/ofproto-dpif.c:1558
#8 run (ofproto_=<optimized out>) at ofproto/ofproto-dpif.c:1006
#9 0x0000000000411bdb in ofproto_run (p=0x184e6e0) at
ofproto/ofproto.c:1076
#10 0x000000000040bc85 in bridge_run () at vswitchd/bridge.c:2076
#11 0x0000000000404a5c in main (argc=<optimized out>, argv=<optimized out>)
at vswitchd/ovs-vswitchd.c:126
(gdb) frame 0
#0 netdev_get_etheraddr (netdev=0x6464613131646164, mac=0x18d33e6 "") at
lib/netdev.c:495
495 return
netdev_get_dev(netdev)->netdev_class->get_etheraddr(netdev, mac);
(gdb) print *netdev
Cannot access memory at address 0x6464613131646164
(gdb) frame 1
#1 0x0000000000417cc3 in send_bpdu_cb (pkt=0x18cfe40, port_num=13,
ofproto_=0x184e6d0) at ofproto/ofproto-dpif.c:1378
1378 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
(gdb) print ofport->up
$1 = {hmap_node = {hash = 26737488, next = 0x188eac0}, ofproto =
0x2d313962382d6434, netdev = 0x6464613131646164, pp = {port_no = 25654,
hw_addr = "36\000\000\000",
name = "!\000\000\000\000\000\000\000p\374\227\001\000\000\000", config
= 25545152, state = OFPUTIL_PS_STP_LISTEN, curr = 80, advertised = 0,
supported = 48, peer = 0, curr_speed = 26737488,
max_speed = 0}, ofp_port = 2, change_seq = 0, mtu = 2}
(gdb) frame 3
#3 0x00000000004782e0 in stp_transmit_config (p=0x189f788) at lib/stp.c:855
855 stp_send_bpdu(p, &config, sizeof config);
(gdb) print config
$4 = {header = {protocol_id = 0, protocol_version = 0 '\000', bpdu_type = 0
'\000'}, flags = 0 '\000', root_id = 4923969635662299264, root_path_cost =
0, bridge_id = 4923969635662299264,
port_id = 3712, message_age = 0, max_age = 20, hello_time = 2,
forward_delay = 15}
(gdb) print p
$5 = (struct stp_port *) 0x189f788
(gdb) print *p
$6 = {stp = 0x189f1c0, aux = 0x185c8b0, port_id = 32782, state =
STP_FORWARDING, path_cost = 100, designated_root = 9223502441917732164,
designated_cost = 0, designated_bridge = 9223502441917732164,
designated_port = 32782, topology_change_ack = false, config_pending =
false, change_detection_enabled = true, message_age_timer = {active =
false, value = 0}, forward_delay_timer = {
active = false, value = 3870}, hold_timer = {active = false, value =
276}, tx_count = 1129, rx_count = 0, error_count = 0, state_changed = false}
[image: Gridcentric Logo]
*Scalable, Efficient, Instant-On Virtualization*
------------------------------
Jing Su
Phone: +1-888-365-GRID (x710)
Email: [email protected]
On Sun, Sep 8, 2013 at 1:55 PM, Ben Pfaff <[email protected]> wrote:
> On Sat, Sep 07, 2013 at 10:13:57PM -0400, Jing Su wrote:
> > I'm getting a problem with ovs-vswitchd segfaulting when I delete virtual
> > machines on KVM.
> >
> >
> > Linux 3.2.0-29-generic #46-Ubuntu SMP
> > openvswitch-1.9.0 - compiled from source
>
> We just released 1.9.3, can you try that?
>
_______________________________________________
discuss mailing list
[email protected]
http://openvswitch.org/mailman/listinfo/discuss
