VirtualBox 4.2.20_2 FreeBSD 9.2-RELEASE host multi CPU VM poudriere crash

[Mikhail Tsatsenko]

2014/1/10 Derek Schrock <dereks at lifeofadishwasher.com>:
> Using VirtualBox 4.2.20_2 (emulators/virtualbox-ose) on a 9.2-RELEASE
> amd64 4 core (8 CPU with HT) host a FreeBSD 10.0-RC5 amd64 (also tested
> with 3 and 4) VM with 4 allocated CPUs will repeatedly crashes when I
> try to build a pkg repo with poudriere (ports-mgmt/poudriere) via the
> bulk command.
>
> From the VM:
>  root at freebsd10testing:~ # kldstat   #VirtualBox additions loaded (tested with/without)
>  Id Refs Address            Size     Name
>   1    9 0xffffffff80200000 15f0310  kernel
>   2    1 0xffffffff81a12000 22d50    vboxguest.ko
>   3    1 0xffffffff81a35000 543      vboxvideo.ko
>   4    1 0xffffffff81a36000 16d6c    drm.ko
>  root at freebsd10testing:~ # sysctl hw.ncpu
>  hw.ncpu: 4
>  root at freebsd10testing:~ # uname -a
>  FreeBSD freebsd10testing 10.0-RC5 FreeBSD 10.0-RC5 #0 r260430: Wed Jan 8 05:10:04 UTC 2014 root at snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64
>  root at freebsd10testing:~ # poudriere bulk -j testing www/firefox
>  ====>> Creating the reference jail... done
>  ====>> Mounting system devices for testing-default
>  ====>> Mounting ports/packages/distfiles
>  ====>> Mounting packages from: /usr/local/poudriere/data/packages/testing-default
>  ====>> Logs: /usr/local/poudriere/data/logs/bulk/testing-default/2014-01-09_19h23m11s
>  /etc/resolv.conf -> /usr/local/poudriere/data/build/testing-default/ref/etc/resolv.conf
>  ====>> Starting jail testing-default
>  ====>> Calculating ports order and dependencies
>  ====>> pkg package missing, skipping sanity
>  ====>> Cleaning the build queue
>  ====>> Building 145 packages using 4 builders
>  ====>> Starting/Cloning builders
>  mount_nullfs: /usr/local/poudriere/data/build/testing-default/03/usr/ports: Device not configured
>  ====>> Error: Failed to mount the ports directory
>  /usr/local/share/poudriere/bulk.sh: 5: Bad file descriptor
>  Write failed: Broken pipe
>
> At this point the ssh session dies (Write failed: Broken pipe) and the
> VM restarts (watching the console via VNC).  The crash appears to occur
> during the building of the reference jails (one per CPU - 4).
>
> I don't see anything in /var/log/messages, /var/crash/ is empty, and savecore
> doesn't dump any core files.
>
> I've tested this with 2, 3, 4, 5, and 6 CPUs allocated to the VM and it
> crashes every time.  The only way I can have the VM not crash is with 1
> allocated CPU.  I believe there's an issue with VirtualBox and FreeBSD
> 10.0 VM when the VM has multiple CPUs.
>
> I don't think this is a poudriere issue however it's the only way I've been
> able to crash the VM.  I've tried extracting multiple ports trees to different
> locations at the same time thinking it's a disk issue because of the above
> "Device not configured" (The/a disk disappears?) error, the VM didn't crash.
>
> I've tried the same command with a FreeBSD 9.2-RELEASE amd64 4 CPU VM
> under the same host with out any failure/crashes.
>
> Could anyone confirm this with a multi-CPU VM and FreeBSD 10.0RC3/4/5 or
> recommend any methods on how to debug this issue?

First of all attach serial console to VM and see if there is any
kernel messages printed upon crash.

Also there is a possibly similar problem:
http://lists.freebsd.org/pipermail/freebsd-stable/2014-January/076772.html
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-- 
Mikhail