Windows XP Guest crash with Kaspersky 2009

Without the VBox.log of the XP VM there's not much we can say.

VBox.log attached, however this bug can always be reproduced.

The crash will probably go away if you turn on VT-x in the VM settings dialog.

VT-x totally enabled : No crash, but Windows XP won't boot, it stays waiting just after the welcome screen, when the desktop should normally appears. VT-x partially enabled : It boots to the desktop and works correctly during a few seconds, then crash with a BSOD VT-x disabled : It boots to the desktop and works correctly during a few seconds, then crash with a BSOD

We have to check this ourselves then. Is there a demo of Kaspersky 2009 and if so, does the problem occur with that version as well?

Also, there's no partial VT-x; it's either enabled or it's not. Can you attach a log when you have VT-x enabled?

I waited 30 minutes for Windows XP to boot, and then attached the VBox.log file, and closed Windows which was still not booted.

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You were right, there is no partial VT-x (I thought this because of the grey case). I tested VT-x enabled (don't boot) and disabled (crashes).

Can be still reproduced with 1.6.4 release and up-to-date kaspersky

This bug can still be reproduced in 1.6.6 release when VT-x is enabled. However, the bug is not reproducible anymore with VT-x disabled!

Ah false, the situation improved : The guest system does not immediately crash anymore, but it still crashes with a BSOD on random situations.

I can always reproduce a crash when I try to open any .zip file!

BSOD does not happens when Kaspersky is disabled.

This bug can be still reproduced with 2.0 release when VT-x is enabled. With VT-x disabled, it crashes on some circumstances (ex: when accessing a .zip file). Nothing changed since 1.6.6 release.

The problem that VirtualBox in VT-x disabled and AMD-V mode can't correctly skip and injects #UD then guest execute performance monitoring code - rdpmc instruction and read/write unknown for VirtualBox performance counters MSRs by rdmsr, wrmsr. Kaspersky 2009 use these instructions in kernel mode of heuristic analysis engine.

VirtualBox correctly work with Kaspersky on Intel VTx.

MMh, I just tried 2.0.2 with VT-x enabled (I have a intel core 2 duo CPU) and it still crashes with a BSOD when clicking on .zip archives.

Opps, there is other bug on 2.0.2 with VT-x enabled. Yesterday I check only heuristic analysis engine with VT-x - work correct. Other bug - VBox hangs when guest write to write-protected page (on supervisor level) with WP disabled bit of CR0.

I think your problem is no VT-x, your problem is Guest additions, try to start XP and unistall Gust additions from control panel

No, the bug is identical without guest additions (I just tested). Crash without VT-x when accessing .zip files, doesn't boot with VT-x

2.0.4, not fixed yet.