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Ticket Resolution Summary Owner Reporter
#19909 fixed macOS:VM crashes after upgrade to 6.1.14 => fixed in svn/6.1.x x>14 lonelygo
Description

OS :macOS 10.15.6 VirtualBox:6.1.14 VM OS : Ubuntu 18.04 LTS


When upgraded to 6.1.14, virtualbox will start up normally, but VM crash after startup.

After downgrading to 6.1.12, vm can be started.

#19904 invalid v6.1.14 fails to open for os/2 guest James Moe
Description

opensuse tumbleweed 20200917

Vbox failed to restore an os/2 4.52 instance after a repo update of Virtualbox from an interim version 6.1.13 (or 6.1.97). The error is shown below. The Display settings are disabled for the guest.

Windows guests start normally.

Unsupported version 22 of data unit 'vga' (instance #0, pass 0xffffffff) (VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION).

I did try to install the 6.1.14 distribution from the Vbox site. It had a dependency failure: "libvpx.so.4()(64bit)". Libvpx6 is installed on this host; adding the devel package made no difference.

#19903 fixed VBoxService CPU hotplug brings always cpu1 online regardless of plugged CPU => fixed in SVN/next maintenance musteresel
Description

The code to bring a newly plugged CPU online is seriously wrong, textual description of what is done there:

  • Lists all files under /sys/devices/system/cpu
  • Iterates over these, one after the other
  • If current file name starts with "cpu" but is not "cpu0" nor "cpuidle", then
  • Tries to open /sys/devices/system/cpu/FILENAME/online and write 1 to it
  • If that succeeds (for ONE single file), calls it a day and returns.

Actual code is here: https://www.virtualbox.org/browser/vbox/trunk/src/VBox/Additions/common/VBoxService/VBoxServiceCpuHotPlug.cpp#L449

Assuming (?) that the directory listing is sorted by name, this will always put cpu1 (and only that!) online.

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Stumbled over this while trying to find out why my CPU (cpu2 ... cpu1 comes before that in the directory listing) isn't online prior to getting it back offline (https://www.virtualbox.org/ticket/19902)

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