virtualbox.org

Hi,
I compiled VirtualBox-6.0.8 with disabling-hardening and debugging on Ubuntu 18.04 (kernel: 4.19.50).
Almost everything is fine, but I have a problem because I can't save the state of the working virtual machine. When I want to save the state of the virtual machine instead of Power off , I get a window with the message "Saving the execution state of the virtual machine ...", when the window was closed in the terminal, when VBox has run, I received warning :

Code: Select all

 WARNING: failed to send RELEASE event, file /home/username/VirtualBox-6.0.8/src/libs/xpcom18a4/ipc/ipcd/extensions/dconnect/src/ipcDConnectService.cpp, line 2338

In GUI I can see that machine state has been saved but I can't run it again because start button is blurred. In log file I found log "assertion failed":

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00:01:06.113179 
00:01:06.113181 !!Assertion Failed!!
00:01:06.113181 Expression: pDev->hUrbIoThread != NIL_RTTHREAD
00:01:06.113182 Location  : /home/username/VirtualBox-6.0.8/src/VBox/Devices/USB/VUSBDevice.cpp(1635) int vusbDevIoThreadExecV(PVUSBDEV, uint32_t, PFNRT, unsigned int, __va_list_tag*)
00:01:06.113200 Stack     :
00:01:06.113201 00007f8c7bf30c73 VBoxRT.so!RTAssertMsg2V+0x51f (rva:0x262c73)
00:01:06.113201

When I used ldd command for check if VirtualBox see VBoxRT.so and everything is OK.

Does anyone have a similar problem? On which component should I focus, where should I look for problems?

Problem was caused by second version of VirtualBox which was installed on my pc, when I remove it and run again "make install" on compiled version everything work fine.

Thank you for the feedback and the solution, hope someone finds it useful in the future. Marking as [Solved].

virtualbox.org

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