Ticket #8850 (closed defect: fixed)
FreeBSD Guest freezes completely
|Reported by:||erik12321||Owned by:|
|Version:||VirtualBox 4.0.6||Keywords:||FreeBDS freezes completely|
We have one or more times a week a complete freeze (guru meditation) in one or more of our guest FreeBSD systems. It occurs only in SMP configurations (in our case we have 2xCPU in the FreeBSD guests).
In this situation the virtualbox process for the guest is consuming a lot of cpu time. A trace of this proces is attached.
When we start a debug session for the guest during freeze (a coredump is attached), you can solve the freeze by doing a stop and a step (t). Sometimes you have to switch CPU and repeating the same. The freeze is solved and the machine will run again.
On the guest we use the guest additions for keeping the time right. We also tested this without these additions and using ntpd, then the same freeze problem happens. It happens for FreeBSD 7.2, 8.1 and 8.2 (and probably other versions as well).
The freeze seems to occur when we do snapshots and stopping and resuming of guests.
Our FreeBSD systems run very well on VirtualBox. With this bug we cannot use FreeBSD for production in combination with FreeBSD.
Hope this problem can be solved!