Ubuntu 10.04 kernel panic on high network load

[Frederick Ryckbosch]

Setup:

• VirtualBox 4.0.4
• Ubuntu 10.04 host (64 bit)
• 1 Ubuntu 10.04 guest (64 bit)
• Running on a quad core AMD Opteron
• Bridged network, using e1000.

Workload:

• 4 concurrent http wgets to a local server (at gigabit)

Problem:

• No problems when using 1 core
• Kernel panic in guest when using 4 cores

Kernel panic is always in e1000_clean.

[Frederick Ryckbosch]

Forgot to mention that the kernel panic does not occur instantaneously but after a while, it can take up to half an hour.

We are having the same problem when running a web server at high load.

[Frederick Ryckbosch]

Tested this on VirtualBox 4.0.6 and the problem is still there.

[Stéphane]

Same problem here. Also under "heavy" load. The virtual machine is running a web server with PHP.

FYI the virtual machine got two network adapter attached (one public, one private subnet, the latest turns to be our private VLAN on the host).

I'm attaching the kernel_panic dump, and the VBox.log.

[Stéphane]

Stack trace of the kernel panic

[Stéphane]

VBox log file of the virtual machine.

[Stéphane]

Like fryckbos said earlier, latest VirtualBox 4.0.6 does not solve the problem.