vnet/jail crashdump

[Peter Libassi]

Looks like bug:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234985 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234985> <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234985 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234985>> and 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238326 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238326> <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238326 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238326>>

The workaround in Bug 238326 comment 7 worked for me.


/Peter

> 3 aug. 2020 kl. 19:36 skrev Ronald Klop <ronald-lists at klop.ws>:
> 
> Hi,
> 
> After stopping a jail I get a crashdump.
> core.txt: https://www.klop.ws/core_2eef39c581f90f2f0c4921e43f1998c1/core.txt.0
> 
> Jail.conf:
> ----------
> exec.stop = "/bin/sh /etc/rc.shutdown";
> exec.clean;
> 
> exec.prestart = "ifconfig bridge0 > /dev/null 2> /dev/null || ( ifconfig bridge0 create && ifconfig bridge0 addm vtnet0 && ifconfig bridge0 up)";
> 
> exec.consolelog = "/var/log/jail_${name}_console.log";
> 
> mount.devfs;
> path = "/data/jails/$name";
> host.hostname = "$name";
> mount.fstab = "/data/jails/fstab.$name";
> vnet;
> allow.mlock;
> devfs_ruleset="110";
> 
> freebsd12 {
> 	osrelease = 12.1-RELEASE-p4;
> 	osreldate = 1201000;
> 	vnet.interface = "epair0b";
> 	# make sure the exec.prestart has a "+=" as we de it in the global definition
> 	# when checking for the bridge
> 	exec.prestart += "ifconfig epair0 create up";
> 	exec.prestart += "ifconfig bridge0 addm epair0a";
> 	exec.prestart += "ifconfig epair0b link 02:xxxxxx:0c";
> 	exec.start = "dhclient epair0b";
> 	exec.start += "/bin/sh /etc/rc";
> 	exec.poststop  = "ifconfig bridge0 deletem epair0a";
> 	exec.poststop += "ifconfig epair0a destroy";
> 
> }
> freebsd13 {
> 	vnet.interface = "epair1b";
> 	# make sure the exec.prestart has a "+=" as we de it in the global definition
> 	# when checking for the bridge
> 	exec.prestart += "ifconfig epair1 create up";
> 	exec.prestart += "ifconfig bridge0 addm epair1a";
> 	exec.prestart += "ifconfig epair1b link 02:xxxxxx:0d";
> 	exec.start = "dhclient epair1b";
> 	exec.start += "/bin/sh /etc/rc";
> 	exec.poststop  = "ifconfig bridge0 deletem epair1a";
> 	exec.poststop += "ifconfig epair1a destroy";
> }
> ----------
> 
> What can I do to help debug?
> 
> Regards,
> Ronald.
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