VirtualBox

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Ticket Resolution Summary Owner Reporter
#21109 invalid The exception integer division by zero in VirtualBoxVM.exe adlerka
Description

Hello,

I am able to crash VirtualBox by using image viewer downloaded from

https://photoqt.org/downloads/windows/photoqt-2.9.1.exe

Steps to reproduce:

  • Install guest additions with 3D acceleration
  • Restart
  • Install PhotoQt
  • Run PhotoQt application
  • Click to enter main menu (the 3 lines on top right)
  • Virtual Machine will crash (division by zero error)
#21108 fixed VM crashes when xHCI controller is reset while USB3 disk is attached mgrzegor
Description

Since VirtualBox version 6.1.36 my Ubuntu VM crashes if I reset the xHCI controller (which I occasionally have to do due to another issue) while one or more of my SuperSpeed (i.e. USB 3.0) external disks are attached to the VM.

The crash also occurs on system boot if one of those disks are attached (which I usually do not do).

Reproduction steps:

  1. Start the VM, wait for the GUI to come up.
  2. Start gnome-terminal.
  3. In the terminal window, type:
    sudo -i
    (to obtain root prompt).
  4. Via the VM menu -> Devices -> USB, attach a USB 3.0 disk to the VM.
  5. In the terminal window, type:
    echo -n "0000:00:0c.0" > /sys/bus/pci/drivers/xhci_hcd/unbind

Result: VM crashes with an "unhandled exception" message (log attached).

The crash does not occur if a high-speed (USB 2.0) disk is attached, or if no USB devices are attached.

In all previous versions of VirtualBox I have used (back to at least 5.0.40) I observed no such crashes.

A workaround is to:

  • not attach USB 3..0 devices while booting the guest
  • detach all USB 3.0 devices before resetting the xHCI controller
  • pray that no xHCI controller reset occurs while I am using any of my USB 3.0 disks (such resets have been observed to occur sporadically in all previous versions of VirtualBox, and have been harmless before.)
#21106 duplicate critical error wayneg
Description

trying to create a new vm window 10 or 11 I get this critical error i have 1 VM I use and works as it should it's just trying to create another

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