Ticket #2775 (closed defect: fixed)

Opened 10 years ago

Last modified 9 years ago

VB-2.1.0 crashed on starting 2nd guest while 1st is being installed with VT-x and AMD-V enabled (Mac OS X)

Reported by: synack Owned by:
Priority: major Component: VMM/HWACCM
Version: VirtualBox 2.1.0 Keywords:
Cc: Guest type: other
Host type: other

Description (last modified by frank) (diff)

Host: Mac OS X 10.5.6 with 2gb RAM

  1. Started installation of Ubuntu-8.04.1 (64-bit) with VT-x and AMD-V enabled in options.
  2. Half-way the installation decided to try PXE boot and get connected to my LTSP server.

Complain/error: An active VM already uses Intel VT-x hw accel. it is not allowed to simultaneously use software virtualization.

Settings of the 2nd guest:

  • Base_memory = 128mb
  • os type = gentoo
  • video memory = default value
  • boot order = network
  • acpi = enabled
  • io acpi = enabled
  • vt-x/amd-v = disabled
  • pae/nx = enabled
  • 3D accel. = disabled

From the crash log:

Process:         VBoxSVC [8165]
Path:            /Applications/
Identifier:      VBoxSVC
Version:         ??? (???)
Code Type:       X86 (Native)
Parent Process:  launchd [1]

Date/Time:       2008-12-18 09:57:44.103 +0800
OS Version:      Mac OS X 10.5.6 (9G55)
Report Version:  6

Exception Codes: KERN_INVALID_ADDRESS at 0x00000000c01de1cf
Crashed Thread:  9

Thread 9 Crashed:
0   VBoxXPCOM.dylib                     0x005e3fbc pt_PostNotifyToCvar + 14
1   VBoxXPCOM.dylib                     0x005e4600 PR_NotifyAll + 22
2   VBoxXPCOMIPCC.dylib                 0x01130a02 DConnectWorker::Run() + 134
3   VBoxXPCOM.dylib                     0x005d02e3 nsThread::Main(void*) + 45
4   VBoxXPCOM.dylib                     0x006038dd _pt_iprt_root + 141
5   VBoxRT.dylib                        0x005114c0 rtThreadMain + 64
6   VBoxRT.dylib                        0x0053b334 rtThreadNativeMain(void*) + 132
7   libSystem.B.dylib                   0x91992095 _pthread_start + 321
8   libSystem.B.dylib                   0x91991f52 thread_start + 34

PS: If I enable "VT-x and AMD-V", I can start that guest (tried with another 32-bit guest installed earlier)

Change History

comment:1 Changed 10 years ago by frank

  • Component changed from host support to VMM/HWACCM
  • Description modified (diff)

Indeed it should not crash but it is not possible to run two concurrent VMs, one with VT-x enabled and another one with VT-x disabled.

comment:2 Changed 9 years ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

Please check the latest release 2.2.2 and reopen this ticket if the problem persits. Starting with VBox 2.2.0 we allow to run VT-x and non-VT-x VM sessions in parallel.

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