Since "upgrading" from VirtualBox 4.1.6 to 4.1.8, I am now receiving in Windbg the error message "Port lock was not acquired" on a regular basis.
It seems to be output every second or two. PIIX chipset is set -- ICH makes things even less stable. After a while, I get a crash in ntkrnlmp.exe:
fffff880`02060a78 fffff800`018c8420 : fffffa80`00000000 00000000`0000000f 00000000`00000010 fffff800`0189d380 : nt!DbgBreakPointWithStatus
fffff880`02060a80 fffff800`018226f1 : fffff800`00000005 00000000`00000000 00000000`0000027f fffff800`000001df : nt!KiBugCheckDebugBreak+0x14
fffff880`02060af0 fffff800`018288cb : fffffa80`057b6b38 fffffa80`057b6000 00000000`00001000 fffff800`01873437 : hal!HalpNMIHalt+0x10d
fffff880`02060b30 fffff800`01872d8b : fffffa80`057b47e9 fffffa80`057b6968 00000000`00000020 fffff800`018362b0 : hal!HalBugCheckSystem+0x7f
fffff880`02060ba0 fffff800`018227fa : fffff800`018362b0 00000000`00000020 fffff880`02060e00 fffff880`02060e00 : nt!WheaReportHwError+0x29b
fffff880`02060c10 fffff800`018d265a : 00000000`00000000 fffff880`02060df0 fffff880`02060cb0 fffffa80`062ca590 : hal!HalHandleNMI+0xfe
fffff880`02060c40 fffff800`01a62ec2 : fffff880`02060df0 fffff880`02060cb0 fffff880`02056180 fffff880`02060e70 : nt!KiProcessNMI+0x1de
fffff880`02060cb0 fffff800`01a62d23 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KxNmiInterrupt+0x82
fffff880`02060df0 fffff800`0182f58b : fffff800`01a5f22c fffff880`02056180 fffff800`0182f2e2 00000000`00000010 : nt!KiNmiInterruptStart+0x163
fffff880`0207ec58 fffff800`01a5f22c : fffff880`02056180 fffff800`0182f2e2 00000000`00000010 00000000`00000246 : hal!HalpLegacyApicEndOfInterrupt+0xb
fffff880`0207ec60 fffff880`02056180 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiDpcInterrupt+0x1c
00000000`00000246 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0xfffff880`02056180
Anyway, I'm going to go "downgrade" to 4.1.6 now. Probably you'll want to investigate this bug.
Port lock was not acquired
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Sasquatch
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Re: Port lock was not acquired
Bugs should be reported in the Bugtracker (OSSO account needed).
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VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org
Retired from this Forum since OSSO introduction.