Fatal trap 9 in KVM environment

maxxer · Jul 28, 2014, 4:41 PM

Hi.
I'm running pfSense for some time now, since 2.0.something it has always been running without issues. With the latest 2.1 releases I'm very rarely running into crashes. Today I managet do catch one:

Fatal trap 9: general protection fault while in kernel mode
[...]
Stopped at rn_match+0x25: cmpw $0,0x10(%r13)

The VM is configured with VirtIO disks, emulated e1000 network cards.
Any hint on what it could be? Where to look at?
thanks

KOM · Jul 28, 2014, 4:47 PM

I'd suspect VirtualBox first, especially in light of their woeful QA practices. Don't try the latest 4.2.14 if you want your VMs to actually work.

I ge tthis with pfSense every now & then. A reboot usually fixes it.

maxxer · Jul 28, 2014, 7:51 PM

Thanks but I'm not on VirtualBox, I'm using KVM.
Sadly this pfSense is in my office, where often nobody is there to reboot the firewall in case of kernel panic :(

KOM · Jul 28, 2014, 8:02 PM

This happens out of the blue? I've only ever seen it on bootup. I know jack about KVM, but it's the exact same crash that I see in VB.

On second glance, I think I was getting fatal trap 12, not 9. Are you running pfSense 2.1.4?

maxxer · Jul 28, 2014, 8:21 PM

Yeah running the latest.
On other deployments I didn't upgrade above 2.1.2 I think and those firewalls are running since months.
Mine, always upgraded, has crashed twice since 2.1.3 (approximately)

KOM · Jul 28, 2014, 8:28 PM

Hmm no idea other than downgrading and then check stability over the course of weeks/months. Does KVM have any HA abilities, heartbeat checking, auto reboot on hang or anything like that?

maxxer · Jul 30, 2014, 7:11 AM

not by itself, but can be implemented in some way.
Thanks for your support. I will try to gather the informations for a bugreport.