VBoxHeadless dumps core on 5.0.12 under fc22 - can't start Win8.1 guest

[iandekit]

I upgraded from 5.0.8 to 5.0.12 along with an OS dnf update... kernel went from kernel-4.2.3-200.fc22.x86_64 to kernel-4.2.8-200.fc22.x86_64

This is for VirtualBox-5.0-5.0.12_104815_fedora22-1.x86_64

After this my Win8.1 guest OS would not start; showed Aborted in phpvirtualbox window.

Inspection of the kernel logs shows lots of these:

Dec 29 04:08:48 patriots kernel: EMT[9984]: segfault at 18 ip 00007ff6e8c10b41 sp 00007ff710985c60 error 4 in VBoxDD.so[7ff6e8b98000+278000] Dec 29 04:08:48 patriots kernel: device em1 left promiscuous mode Dec 29 04:08:48 patriots kernel: vboxnetflt: 0 out of 1 packets were not sent (directed to host) Dec 29 04:08:55 patriots kernel: vboxdrv: ffffffffa05db020 VMMR0.r0 Dec 29 04:08:55 patriots kernel: vboxdrv: ffffffffa06d6020 VBoxDDR0.r0 Dec 29 04:08:55 patriots kernel: vboxdrv: ffffffffa0272020 VBoxDD2R0.r0 Dec 29 04:08:55 patriots kernel: VBoxNetFlt: attached to 'em1' / 00:21:28:bb:f3:7c Dec 29 04:08:55 patriots kernel: vboxdrv: ffffffffa025b020 VBoxEhciR0.r0

followed by this (with #012# turned back into newlines)

Dec 29 03:20:35 patriots systemd-coredump: Process 5540 (VBoxHeadless) of user 0 dumped core. 012Stack trace of thread 5552: 0 0x00007f2bc9700b41 _ZL8hdaTimerP9PDMDEVINSP7TMTIMERPv (VBoxDD.so) 1 0x00007f2bfc31557e _ZL17tmR3TimerQueueRunP2VMP12TMTIMERQUEUE (VBoxVMM.so) 2 0x00007f2bfc319200 TMR3TimerQueuesDo (VBoxVMM.so) 3 0x00007f2bfc2b711f emR3ForcedActions (VBoxVMM.so) 4 0x00007f2bfc2bb0b9 emR3HmExecute (VBoxVMM.so) 5 0x00007f2bfc2b814f EMR3ExecuteVM (VBoxVMM.so) 6 0x00007f2bfc32248a _Z25vmR3EmulationThreadWithIdP11RTTHREADINTP6UVMCPUj (VBoxVMM.so) 7 0x00007f2c0466f84c rtThreadMain (VBoxRT.so) 8 0x00007f2c046ea7ac _ZL18rtThreadNativeMainPv (VBoxRT.so) 9 0x0000003798407555 start_thread (libpthread.so.0) 10 0x0000003797d02b9d clone (libc.so.6) 012Stack trace of thread 5540: 0 0x0000003797cf9063 select (libc.so.6) 1 0x00007f2bfccb00c7 _ZN3comL20waitForEventsOnXPCOMEP13nsIEventQueuej.constprop.0 (VBoxHeadless.so) 2 0x00007f2bfccb05fc _ZN3com16NativeEventQueue17processEventQueueEj (VBoxHeadless.so) 3 0x00007f2bfccaa741 TrustedMain (VBoxHeadless.so) 4 0x0000003797c20700 libc_start_main (libc.so.6) 5 0x00000000004010f9 n/a (VBoxHeadless) 012Stack trace of thread 5559: 0 0x000000379840fc7d nanosleep (libpthread.so.0) 1 0x00007f2c046eaca9 RTThreadSleepNoLog (VBoxRT.so) 2 0x00007f2bfc3df372 _ZL15pdmR3NsTxThreadP2VMP9PDMTHREAD (VBoxVMM.so) 3 0x00007f2bfc2dc30a _ZL15pdmR3ThreadMainP11RTTHREADINTPv (VBoxVMM.so) 4 0x00007f2c0466f84c rtThreadMain (VBoxRT.so) 5 0x00007f2c046ea7ac _ZL18rtThreadNativeMainPv (VBoxRT.so) 6 0x0000003798407555 start_thread (libpthread.so.0) 7 0x0000003797d02b9d clone (libc.so.6) 012Stack trace of thread 5556: 0 0x000000379840c540 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) 1 0x00007f2c046ed3b8 RTSemEventWait (VBoxRT.so) 2 0x00007f2c0466d538 RTReqQueueProcess (VBoxRT.so) 3 0x00007f2bf4d0e83e _ZN9guestProp7Service16threadNotifyHostEP11RTTHREADINTPv (VBoxGuestPropSvc.so) 4 0x00007f2c0466f84c rtThreadMain (VBoxRT.so) 5 0x00007f2c046ea7ac _ZL18rtThreadNativeMainPv (VBoxRT.so) 6 0x0000003798407555 start_thread (libpthread.so.0) 7 0x0000003797d02b9d clone (libc.so.6) 012Stack trace of thread 5545: 0 0x000000379840c8e9 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0) 1 0x00007f2c046ed2f5 RTSemEventWait (VBoxRT.so) 2 0x00007f2bf78ed5c8 _ZN16VirtualBoxClient16SVCWatcherThreadEP11RTTHREADINTPv (VBoxC.so) 3 0x00007f2c0466f84c rtThreadMain (VBoxRT.so) 4 0x00007f2c046ea7ac _ZL18rtThreadNativeMainPv (VBoxRT.so) 5 0x0000003798407555 start_thread (libpthread.so.0) 6 0x0000003797d02b9d clone (libc.so.6) 012Stack trace of thread 5544: 0 0x000000379840c8e9 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0) 1 0x00007f2bfca34dd4 pt_TimedWait (VBoxXPCOM.so) 2 0x00007f2bfca351fb VBoxNsprPR_WaitCondVar (VBoxXPCOM.so) 3 0x00007f2bfca35477 VBoxNsprPR_Wait (VBoxXPCOM.so) 4 0x00007f2bfc752985 _ZL10WaitTargetRK4nsIDjPP10ipcMessagePFjPvP13ipcTargetDataPKS2_ES5_ (VBoxXPCOMIPCC.so) 5 0x00007f2bfc752b5f _ZL15MakeIPCMRequestP10ipcMessagePS0_ (VBoxXPCOMIPCC.so) 6 0x00007f2bfc75338d _Z15IPC_SendMessagejRK4nsIDPKhj (VBoxXPCOMIPCC.so) 7 0x00007f2bfc758ff5 _ZN12DConnectStub10CallMethodEtPK15nsXPTMethodInfoP17nsXPTCMiniVariant (VBoxXPCOMIPCC.so) 8 0x00007f2bfca30ac4 PrepareAndDispatch (VBoxXPCOM.so) 9 0x00007f2bfca2ff2d SharedStub (VBoxXPCOM.so)

Tried 'dnf reinstall VirtualBox-5.0-5.0.12_104815_fedora22-1.x86_64' ; no better.

Went back to 5.0.8 on same kernel; all fine.

This hardware is a Sun X2270M2.

I have the same VirtualBox 5.0.12 and kernel 4.2.8-200.fc22.x86_64 running on other hardware (eg: X4-2, X4100M2)but with different (linux) guest OS's and they seem fine.

The appropriate matching extpacks were installed.

[iandekit]

backtrace, not munged by bug tracker editor