VirtualBox

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Ticket Resolution Summary Owner Reporter
#7313 fixed 4-CPU debian 5.0 guest gives: "BUG: soft lockup - CPU#[n] stuck for 61s - [procname:procid]" Nick J
Description

Host is 64 bit Ubuntu 10.04, running VirtualBox 3.2.8. Guest is Debian 5.0, 64 bit.

Guest was set up with 1 CPU, but since my host has a Quad Intel processor, I decided to try increasing it to 4 CPUs on the guest. Running with 4 CPUs gave errors like "BUG: soft lockup - CPU#[n] stuck for 61s - [procname:procid]" on the guest's console (will attach screenshot of this shortly), which doesn't sound like it can be a good thing. I then ran unixbench on the guest, and whilst this was running, the guest hung, and had to be forcibly shutdown.

I then brought the number of CPUs down from 4 to 2, and re-ran unixbench. The "BUG: soft lockup" messages were gone, and the VirtualBox did not hang.

So, there seems to be a problem with 4 CPUs, at least for me, that causes "BUG: soft lockup - CPU#[n] stuck for 61s - [procname:procid]" errors, and that _possibly_ also causes freezing under some situations.

#7976 fixed 4.0 on linux host segfaults after resume from disk bleun
Description

Running VirtualBox 4.0 on Ubuntu 10.10 host results in a segfault in VBoxVMM.so if the host resumes from a suspend to disk.

Suspend/Resume to ram works flawless, 3.2.12 showed the same error, for relevant info from /var/log/messages see attachements.

#7947 fixed 4.0.0 - crash with async I/O and VMDK snapshots => fixed in svn/4.0.2 Avi
Description

Hello

i have just upgraded from virtualbox 3.2.12 to 4.0.0 and i can't start my Ubuntu 10.04 machine . it crashes with the following line " plymouth main process terminated status 2" and then VirtualBox software crashes also!

AppName: virtualbox.exe AppVer: 4.0.0.0 ModName: vboxddu.dll ModVer: 0.0.0.0 Offset: 0000374f

before the upgrade the Ubuntu 10.04 i have ran without a problem. (without 3d support)

please check this since i can't access the machine.

Avi

(i can run my Mint 10 linux)

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