Host freezes with Intel Virtualization Technology enabled

[kzar]

Environment

Virtualbox 4.3.26r98988 running on Ubuntu 14.10 with the Ubuntu mainline build of 3.19.3-031903 kernel. Machine is a Thinkpad T450 with a Intel Core i7-5600U processor.

(Also have Intel(R) Graphics Installer for Linux* 1.0.8 and Version 25.16.12.0 of the iwlwifi firmware for the 7265 WiFi card)

For more context there is a forum thread: ​https://forums.virtualbox.org/viewtopic.php?f=7&t=66903&p=317131#p317131

How to reproduce

• Enable the "Intel Virtualization Technology" option in the BIOS under Security -> Virtualization.
• Attempt to boot any VirtualBox VM.

Observed behaviour

Entire host machine freezes almost immediately.

Expected behaviour

Guest to boot successfully, host to not freeze.

[kzar]

linux-image-3.19.3-031903-generic.223034.crash.gz

[kzar]

linux-image-3.19.3-031903-generic.231185.crash.gz

[kzar]

kern.log.gz

[kzar]

VBoxSVC.logs.tar.gz

[Frank Mehnert]

This is SMAP and a duplicate of #13961. Please apply the latest patch (diff_smap_4) from there to your kernel drivers, recompile them and the problem should be fixed.

[kzar]

@frank thanks! You were right, that fixed the issue for me.

[Frank Mehnert]

Thanks for the feedback!