question Re: sandbox VM crash with kernel:bug: soft lockup in Archives of Support Questions (Read Only)

sandbox VM crash with kernel:bug: soft lockup

tech — Fri, 01 Jan 2016 00:19:13 GMT

I downloaded the sandbox VM for virtualbox and started it on ubuntu host with virtualbox 5 and after a couple of hours it crash.

On the screen I get :

Message from syslog@sandbox at dec ....

kernel:Bug: soft lockup - CPU2 stuck for 67s! [java:30253]

and this message repeat itself on and on.

The vm is stuck and non responsive. I need to poweroff and restart it!

Here are the log vboxlog relevant lignes:

00:01:05.829053 VMMDev: Guest Log: 00:00:00.011489 main 4.3.22 r98236 started. Verbose level = 0 00:08:50.366623 TM: Giving up catch-up attempt at a 60 002 234 869 ns lag; new total: 60 002 234 869 ns 14:11:48.845736 PIIX3 ATA: Ctl#0: RESET, DevSel=0 AIOIf=0 CmdIf0=0xca (30357026 usec ago) CmdIf1=0x00 (-1 usec ago) 14:12:05.363192 PIIX3 ATA: execution time for ATA command 0xca was 46 seconds 14:12:05.366460 PIIX3 ATA: Ctl#0: finished processing RESET

The host is a dell server with 2 quad xeon 32 gig ecc ram.

I have two other VM running on the host. A debian 64 and a ubuntu lts 14.04 that run just fine.

Anybody had a luck with virtualbox 5?

Peter

Re: sandbox VM crash with kernel:bug: soft lockup

abajwa — Fri, 01 Jan 2016 01:24:16 GMT

The error suggests you may not have assigned enough CPUs to the VM. How many did you give it? Also, it seems there are known issues on older Ubuntu kernels: http://serverfault.com/questions/336591/how-to-fi...

Re: sandbox VM crash with kernel:bug: soft lockup

tech — Fri, 01 Jan 2016 01:51:06 GMT

I don't think it's related to cpu assignment, The vm has 4 cpu @ 100% cap. And doing nothing. The load is below 0.3 most of the time.

As for the kernel! The host has latest current kernel

Linux host 3.13.0-74-generic #118-Ubuntu SMP Thu Dec 17 22:52:10 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

And the known issue is related for kernel in lucid-updates not LTS 14.04

Thanks for the suggestions.

Re: sandbox VM crash with kernel:bug: soft lockup

abajwa — Fri, 01 Jan 2016 02:42:04 GMT

@Peter Young: Sure makes sense.

@rmolina: have you guys encountered this before?

Re: sandbox VM crash with kernel:bug: soft lockup

rmolina — Fri, 01 Jan 2016 05:38:41 GMT

@Ali Bajwa

I remember someone else posting regarding an issue with newer versions of virtualbox, but I wasn't able to reproduce. we may have to investigate further.

Re: sandbox VM crash with kernel:bug: soft lockup

tech — Fri, 01 Jan 2016 22:31:39 GMT

After some research I was able to have the VM work for more than 12 hours now.

Looks like virtualbox 5 has some new features regarding clock.

Here is my fix:

<code>I added grub arguments on the kernel clock=pit nosmp noapic nolapic 
in order to have 

clocksource=kvm-clock

Look to check clocksouce:

Check what clocksource that you are using:

<code>$ cat /sys/devices/system/clocksource/clocksource0/current_clocksource

Check which ones that are available:

<code>$ cat /sys/devices/system/clocksource/clocksource0/available_clocksource

If you got a "kvm-clock" entry in "available_clocksource" try to use it by setting kernel parameter:

<code>clocksource=kvm-clock

From http://serverfault.com/questions/132197/best-pract...

Peter