[Bug 200319] Bridge+CARP crashes/freezes

[Nikos Vassiliadis]

Hi,

regarding this bug... When carp information is about to be printed,
it stops. All network activity has stopped by then. For example:

> bridge0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1280
>         ether 02:48:9e:59:98:00
>         inet 156.0.0.2 netmask 0xffffffc0 broadcast 156.0.0.63
>         inet 156.0.0.10 netmask 0xffffffc0 broadcast 156.0.0.63 vhid 10
>         nd6 options=9<PERFORMNUD,IFDISABLED>
> load: 1.18  cmd: ifconfig 1683 [running] 4.14r 0.00u 0.01s 35% 2268k
> load: 1.18  cmd: ifconfig 1683 [running] 4.59r 0.00u 0.01s 36% 2268k
> load: 1.18  cmd: ifconfig 1683 [running] 4.85r 0.00u 0.01s 39% 2268k
> load: 1.18  cmd: ifconfig 1683 [running] 5.05r 0.00u 0.01s 41% 2268k
> load: 1.18  cmd: ifconfig 1683 [running] 5.27r 0.00u 0.01s 39% 2268k
> load: 1.18  cmd: ifconfig 1683 [running] 5.48r 0.00u 0.01s 41% 2268k
> load: 1.18  cmd: ifconfig 1683 [running] 5.69r 0.00u 0.01s 43% 2268k
> ^C^C^C^Z
>
>
>
>
>
> load: 1.86  cmd: ifconfig 1683 [*carp_if] 31.26r 0.00u 30.67s 88% 2268k
> load: 1.86  cmd: ifconfig 1683 [*carp_if] 31.42r 0.00u 30.67s 88% 2268k
> ^Z^Z^Z^C^C^C^C
>
> load: 0.22  cmd: ifconfig 1683 [*carp_if] 645.27r 0.00u 30.67s 0% 2268k
> load: 0.21  cmd: ifconfig 1683 [*carp_if] 645.81r 0.00u 30.67s 0% 2268k
> load: 0.21  cmd: ifconfig 1683 [*carp_if] 646.17r 0.00u 30.67s 0% 2268k


Eventually the kernel will panic:
> panic: deadlkres: possible deadlock detected for 0xfffff800045b44a0, blocked for 900246 ticks


Is this the same bug, Jason?

I could try the patch on my bhyve cluster.

Thanks,
Nikos