Virtual Media Manager crashes when I close it

[Artem S. Tashkinov]

This has been happening for more than a year already.

OS: Fedora 32 with all updates installed

NVIDIA drivers: 455.28

Steps to reproduce:

1) Open Virtual Media Manager

2) Close it

3) Get a crash:

Process 1242677 (VirtualBox) of user 1000 dumped core.

Stack trace of thread 1242677:
#0  0x00007f36a8a4ac88 _ZNK7QWindow10isTopLevelEv (libQt5Gui.so.5 + 0x128c88)
#1  0x00007f36a8a4cb47 _ZN14QWindowPrivate27maybeQuitOnLastWindowClosedEv (libQt5Gui.so.5 + 0x12ab47)
#2  0x00007f36a8a515d5 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5 + 0x12f5d5)
#3  0x00007f36a844af4b _ZN13QWidgetWindow5eventEP6QEvent (libQt5Widgets.so.5 + 0x1cef4b)
#4  0x00007f36a83ee063 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x172063)
#5  0x00007f36a90e5fc0 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x25afc0)
#6  0x00007f36a8a435ad _ZN22QGuiApplicationPrivate17processCloseEventEPN29QWindowSystemInterfacePrivate10CloseEventE (libQt5Gui.so.5 + 0x1215ad)
#7  0x00007f36a8a2815b _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5 + 0x10615b)
#8  0x00007f36a3dd4c9e _ZL17xcbSourceDispatchP8_GSourcePFiPvES1_ (libQt5XcbQpa.so.5 + 0x65c9e)
#9  0x00007f36a6e6878f g_main_context_dispatch (libglib-2.0.so.0 + 0x5278f)
#10 0x00007f36a6e68b18 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0x52b18)
#11 0x00007f36a6e68be3 g_main_context_iteration (libglib-2.0.so.0 + 0x52be3)
#12 0x00007f36a9131b73 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a6b73)
#13 0x00007f36a90e491b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x25991b)
#14 0x00007f36a90ec5a6 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x2615a6)
#15 0x0000000000479cce TrustedMain (VirtualBox + 0x79cce)
#16 0x0000000000477a1e main (VirtualBox + 0x77a1e)
#17 0x00007f36a7e19042 __libc_start_main (libc.so.6 + 0x27042)
#18 0x00000000004793ee _start (VirtualBox + 0x793ee)

Stack trace of thread 1242689:
#0  0x00007f36a7b45e92 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfe92)
#1  0x00007f36a758157f _xcb_conn_wait (libxcb.so.1 + 0xd57f)
#2  0x00007f36a758371a xcb_wait_for_event (libxcb.so.1 + 0xf71a)
#3  0x00007f36a3dd3c78 _ZN14QXcbEventQueue3runEv (libQt5XcbQpa.so.5 + 0x64c78)
#4  0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#5  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#6  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242692:
#0  0x00007f36a7ee8aaf __poll (libc.so.6 + 0xf6aaf)
#1  0x00007f36a6e68aae g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0x52aae)
#2  0x00007f36a6e68be3 g_main_context_iteration (libglib-2.0.so.0 + 0x52be3)
#3  0x00007f36a9131b73 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a6b73)
#4  0x00007f36a90e491b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x25991b)
#5  0x00007f36a8f50427 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc5427)
#6  0x00007f36a3cb451b _ZN22QDBusConnectionManager3runEv (libQt5DBus.so.5 + 0x1951b)
#7  0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#8  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#9  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242697:
#0  0x00007f36a7ee8aaf __poll (libc.so.6 + 0xf6aaf)
#1  0x00007f36a944cf12 _pr_poll_with_poll (VBoxXPCOM.so + 0xa4f12)
#2  0x00007f36a944e825 VBoxNsprPR_Poll (VBoxXPCOM.so + 0xa6825)
#3  0x00007f36a17b5f2c _ZL10ConnThreadPv (VBoxXPCOMIPCC.so + 0x17f2c)
#4  0x00007f36a9449ba5 _pt_iprt_root (VBoxXPCOM.so + 0xa1ba5)
#5  0x00007f36a97896f4 rtThreadMain (VBoxRT.so + 0x1896f4)
#6  0x00007f36a984137e _ZL18rtThreadNativeMainPv (VBoxRT.so + 0x24137e)
#7  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#8  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242777:
#0  0x00007f36a7b461b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x101b8)
#1  0x00007f36a8f56d0a _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xcbd0a)
#2  0x00007f36a8f56e0b _ZN14QWaitCondition4waitEP6QMutexm (libQt5Core.so.5 + 0xcbe0b)
#3  0x00007f36a9bd9dd2 _ZN12UIThreadPool11dequeueTaskEP14UIThreadWorker (UICommon.so + 0x288dd2)
#4  0x00007f36a9bda163 _ZN14UIThreadWorker3runEv (UICommon.so + 0x289163)
#5  0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#6  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#7  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242731:
#0  0x00007f36a7b461b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x101b8)
#1  0x00007f36a984321c RTSemEventWait (VBoxRT.so + 0x24321c)
#2  0x00007f36a04fbb16 _ZN14ListenerRecord7dequeueEPP6IEventiRN4util12AutoLockBaseE (VBoxC.so + 0x111b16)
#3  0x00007f36a04fbd2a _ZN11EventSource8getEventERK6ComPtrI14IEventListenerEiRS0_I6IEventE (VBoxC.so + 0x111d2a)
#4  0x00007f36a066a3a0 _ZN15EventSourceWrap8GetEventEP14IEventListeneriPP6IEvent (VBoxC.so + 0x2803a0)
#5  0x00007f36a9d607ff _ZN12CEventSource8GetEventERK14CEventListeneri (UICommon.so + 0x40f7ff)
#6  0x00007f36a9bbc1c8 _ZN26UIMainEventListeningThread3runEv (UICommon.so + 0x26b1c8)
#7  0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#8  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#9  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242698:
#0  0x00007f36a7b45e92 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfe92)
#1  0x00007f36a944aebe VBoxNsprPR_WaitCondVar (VBoxXPCOM.so + 0xa2ebe)
#2  0x00007f36a944b101 VBoxNsprPR_Wait (VBoxXPCOM.so + 0xa3101)
#3  0x00007f36a17b2f90 _ZN14DConnectWorker3RunEv (VBoxXPCOMIPCC.so + 0x14f90)
#4  0x00007f36a943942b _ZN8nsThread4MainEPv (VBoxXPCOM.so + 0x9142b)
#5  0x00007f36a9449ba5 _pt_iprt_root (VBoxXPCOM.so + 0xa1ba5)
#6  0x00007f36a97896f4 rtThreadMain (VBoxRT.so + 0x1896f4)
#7  0x00007f36a984137e _ZL18rtThreadNativeMainPv (VBoxRT.so + 0x24137e)
#8  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#9  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242690:
#0  0x00007f36a7ee8aaf __poll (libc.so.6 + 0xf6aaf)
#1  0x00007f36a6e68aae g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0x52aae)
#2  0x00007f36a6e68be3 g_main_context_iteration (libglib-2.0.so.0 + 0x52be3)
#3  0x00007f36a6e68c31 glib_worker_main (libglib-2.0.so.0 + 0x52c31)
#4  0x00007f36a6e927f2 g_thread_proxy (libglib-2.0.so.0 + 0x7c7f2)
#5  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#6  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242696:
#0  0x00007f36a7b45e92 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfe92)
#1  0x00007f36a98432f1 RTSemEventWait (VBoxRT.so + 0x2432f1)
#2  0x00007f36a9786cd9 RTReqQueueProcess (VBoxRT.so + 0x186cd9)
#3  0x00007f36a984122e _ZL32rtThreadPosixPriorityProxyThreadP11RTTHREADINTPv (VBoxRT.so + 0x24122e)
#4  0x00007f36a97896f4 rtThreadMain (VBoxRT.so + 0x1896f4)
#5  0x00007f36a984137e _ZL18rtThreadNativeMainPv (VBoxRT.so + 0x24137e)
#6  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#7  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242729:
#0  0x00007f36a7b461b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x101b8)
#1  0x00007f36a984321c RTSemEventWait (VBoxRT.so + 0x24321c)
#2  0x00007f36a058cf68 _ZN16VirtualBoxClient16SVCWatcherThreadEP11RTTHREADINTPv (VBoxC.so + 0x1a2f68)
#3  0x00007f36a97896f4 rtThreadMain (VBoxRT.so + 0x1896f4)
#4  0x00007f36a984137e _ZL18rtThreadNativeMainPv (VBoxRT.so + 0x24137e)
#5  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#6  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242730:
#0  0x00007f36a7b461b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x101b8)
#1  0x00007f36a944aaa1 pt_TimedWait (VBoxXPCOM.so + 0xa2aa1)
#2  0x00007f36a944ae63 VBoxNsprPR_WaitCondVar (VBoxXPCOM.so + 0xa2e63)
#3  0x00007f36a944b101 VBoxNsprPR_Wait (VBoxXPCOM.so + 0xa3101)
#4  0x00007f36a17a9d88 _ZL10WaitTargetRK4nsIDjPP10ipcMessagePFjPvP13ipcTargetDataPKS2_ES5_ (VBoxXPCOMIPCC.so + 0xbd88)
#5  0x00007f36a17aaa80 _Z15IPC_WaitMessagejRK4nsIDP19ipcIMessageObserverS3_j (VBoxXPCOMIPCC.so + 0xca80)
#6  0x00007f36a17b0b6b _ZN12DConnectStub10CallMethodEtPK15nsXPTMethodInfoP17nsXPTCMiniVariant (VBoxXPCOMIPCC.so + 0x12b6b)
#7  0x00007f36a9445f71 PrepareAndDispatch (VBoxXPCOM.so + 0x9df71)
#8  0x00007f36a94453ef SharedStub (VBoxXPCOM.so + 0x9d3ef)
#9  0x00007f36a9d607ff _ZN12CEventSource8GetEventERK14CEventListeneri (UICommon.so + 0x40f7ff)
#10 0x00007f36a9bbc1c8 _ZN26UIMainEventListeningThread3runEv (UICommon.so + 0x26b1c8)
#11 0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#12 0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#13 0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242691:
#0  0x00007f36a7ee8aaf __poll (libc.so.6 + 0xf6aaf)
#1  0x00007f36a6e68aae g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0x52aae)
#2  0x00007f36a6e68e33 g_main_loop_run (libglib-2.0.so.0 + 0x52e33)
#3  0x00007f36a2cf06aa gdbus_shared_thread_func (libgio-2.0.so.0 + 0x1226aa)
#4  0x00007f36a6e927f2 g_thread_proxy (libglib-2.0.so.0 + 0x7c7f2)
#5  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#6  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242776:
#0  0x00007f36a7b461b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x101b8)
#1  0x00007f36a8f56d0a _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xcbd0a)
#2  0x00007f36a8f56e0b _ZN14QWaitCondition4waitEP6QMutexm (libQt5Core.so.5 + 0xcbe0b)
#3  0x00007f36a9bd9dd2 _ZN12UIThreadPool11dequeueTaskEP14UIThreadWorker (UICommon.so + 0x288dd2)
#4  0x00007f36a9bda163 _ZN14UIThreadWorker3runEv (UICommon.so + 0x289163)
#5  0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#6  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#7  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

Stack trace of thread 1242778:
#0  0x00007f36a7b461b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x101b8)
#1  0x00007f36a8f56d0a _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xcbd0a)
#2  0x00007f36a8f56e0b _ZN14QWaitCondition4waitEP6QMutexm (libQt5Core.so.5 + 0xcbe0b)
#3  0x00007f36a9bd9dd2 _ZN12UIThreadPool11dequeueTaskEP14UIThreadWorker (UICommon.so + 0x288dd2)
#4  0x00007f36a9bda163 _ZN14UIThreadWorker3runEv (UICommon.so + 0x289163)
#5  0x00007f36a8f51690 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xc6690)
#6  0x00007f36a7b3f432 start_thread (libpthread.so.0 + 0x9432)
#7  0x00007f36a7ef3913 __clone (libc.so.6 + 0x101913)

dmesg:

VirtualBox[1242677]: segfault at 3b1 ip 00007f36a8a4ac88 sp 00007ffdd060edb8 error 4 in libQt5Gui.so.5.14.2[7f36a8a01000+37d000]
Code: ff ff ff 0f 1f 80 00 00 00 00 8b 01 45 31 e4 4d 8d 75 18 83 f8 01 0f 86 29 ff ff ff e9 71 ff ff ff 90 f3 0f 1e fa 48 8b 47 08 <48> 83 78 60 00 0f 94 c0 c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f' from markup due to error parsing markup: Error on line 3 char 166: “48” is not a valid name

[codywohlers]

I can confirm this bug. It also segfaults when I close the Host Network Manager. Started happening after upgrade of KDE Neon to 5.20. I have an AMD video card. Seems to be related to LibQt5Gui.so.

Nov  2 05:41:01 cody-gpu1 kernel: [59697.756464] VirtualBox[563283]: segfault at 111 ip 00007f61ef4c2158 sp 00007ffe62825b78 error 4 in libQt5Gui.so.5.15.0[7f61ef462000+4d2000]

• virtualbox 6.1.10-dfsg-1~ubuntu1.20.04.1

• KDE neon User Edition 5.20 focal (Linux 5.4.0-52-generic x86_64)

[Bughunter]

I can confirm this with:

Intel Iris Xe graphics

Linux Mint 20.2 Cinnamon

Kernel 5.11.0-25-generic

Virtualbox 6.1.26

Syslog:

Jul 31 11:45:00 gc02 kernel: [ 281.254056] VirtualBox[6785]: segfault at 289 ip 00007f869992a9f8 sp 00007ffe2256e428 error 4 in libQt5Gui.so.5.12.8[7f86998d5000+41d000] Jul 31 11:45:00 gc02 kernel: [ 281.254072] Code: ff e8 2c ec fa ff e9 4c ff ff ff 0f 1f 80 00 00 00 00 48 89 de e8 98 e9 fa ff eb c7 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b 47 08 <48> 83 78 78 00 0f 94 c0 c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f Jul 31 11:45:00 gc02 systemd[1]: Started Process Core Dump (PID 6834/UID 0). Jul 31 11:45:00 gc02 systemd-coredump[6835]: Process 6785 (VirtualBox) of user 1000 dumped core.#012#012Stack trace of thread 6785:#012#0 0x00007f869992a9f8 _ZNK7QWindow10isTopLevelEv (libQt5Gui.so.5 + 0x12a9f8)#012#1 0x00007f869992d968 _ZN14QWindowPrivate27maybeQuitOnLastWindowClosedEv (libQt5Gui.so.5 + 0x12d968)#012#2 0x00007f8699931a61 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5 + 0x131a61)#012#3 0x00007f869933147c n/a (libQt5Widgets.so.5 + 0x1cc47c)#012#4 0x00007f86992cfa66 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x16aa66)#012#5 0x00007f86992d90f0 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x1740f0)#012#6 0x00007f869a07193a _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x28693a)#012#7 0x00007f8699923635 _ZN22QGuiApplicationPrivate17processCloseEventEPN29QWindowSystemInterfacePrivate10CloseEventE (libQt5Gui.so.5 + 0x123635)#012#8 0x00007f8699928132 _ZN22QGuiApplicationPrivate24processWindowSystemEventEPN29QWindowSystemInterfacePrivate17WindowSystemEventE (libQt5Gui.so.5 + 0x128132)#012#9 0x00007f869990235b _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5 + 0x10235b)#012#10 0x00007f869418532e n/a (libQt5XcbQpa.so.5 + 0x7932e)#012#11 0x00007f8697db117d g_main_context_dispatch (libglib-2.0.so.0 + 0x5217d)#012#12 0x00007f8697db1400 n/a (libglib-2.0.so.0 + 0x52400)#012#13 0x00007f8697db14a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3)#012#14 0x00007f869a0c9565 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2de565)#012#15 0x00007f869a0704db _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2854db)#012#16 0x00007f869a078246 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x28d246)#012#17 0x000055b725147168 n/a (VirtualBox + 0x95168)#012#18 0x000055b7251449e6 n/a (VirtualBox + 0x929e6)#012#19 0x00007f8698ce10b3 libc_start_main (libc.so.6 + 0x270b3)#012#20 0x000055b72514640e n/a (VirtualBox + 0x9440e)#012#012Stack trace of thread 6800:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f8690f22b5b n/a (iris_dri.so + 0x4bab5b)#012#2 0x00007f8690f2275b n/a (iris_dri.so + 0x4ba75b)#012#3 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#4 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6804:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8697db136e n/a (libglib-2.0.so.0 + 0x5236e)#012#2 0x00007f8697db14a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3)#012#3 0x00007f869a0c9565 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2de565)#012#4 0x00007f869a0704db _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2854db)#012#5 0x00007f8699ea8785 _ZN7QThread4execEv (libQt5Core.so.5 + 0xbd785)#012#6 0x00007f8694040efa n/a (libQt5DBus.so.5 + 0x17efa)#012#7 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#8 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#9 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6802:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f8690f22b5b n/a (iris_dri.so + 0x4bab5b)#012#2 0x00007f8690f2275b n/a (iris_dri.so + 0x4ba75b)#012#3 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#4 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6828:#012#0 0x00007f8698a037b1 futex_abstimed_wait_cancelable (libpthread.so.0 + 0x107b1)#012#1 0x00007f869a7e331c RTSemEventWait (VBoxRT.so + 0x25231c)#012#2 0x00007f868456c817 n/a (VBoxC.so + 0x127817)#012#3 0x00007f868456c9ea n/a (VBoxC.so + 0x1279ea)#012#4 0x00007f86846f1f0b n/a (VBoxC.so + 0x2acf0b)#012#5 0x00007f869add6ca0 _ZN12CEventSource8GetEventERK14CEventListeneri (UICommon.so + 0x4e5ca0)#012#6 0x00007f869ab90320 n/a (UICommon.so + 0x29f320)#012#7 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#8 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#9 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6803:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f8690f22b5b n/a (iris_dri.so + 0x4bab5b)#012#2 0x00007f8690f2275b n/a (iris_dri.so + 0x4ba75b)#012#3 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#4 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6830:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8697db136e n/a (libglib-2.0.so.0 + 0x5236e)#012#2 0x00007f8697db16f3 g_main_loop_run (libglib-2.0.so.0 + 0x526f3)#012#3 0x00007f8692ce2f8a n/a (libgio-2.0.so.0 + 0x11ef8a)#012#4 0x00007f8697ddaad1 n/a (libglib-2.0.so.0 + 0x7bad1)#012#5 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#6 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6808:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f869a7e3411 RTSemEventWait (VBoxRT.so + 0x252411)#012#2 0x00007f869a71c207 RTReqQueueProcess (VBoxRT.so + 0x18b207)#012#3 0x00007f869a7e0d76 n/a (VBoxRT.so + 0x24fd76)#012#4 0x00007f869a71e8d8 n/a (VBoxRT.so + 0x18d8d8)#012#5 0x00007f869a7e1192 n/a (VBoxRT.so + 0x250192)#012#6 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#7 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6829:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8697db136e n/a (libglib-2.0.so.0 + 0x5236e)#012#2 0x00007f8697db14a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3)#012#3 0x00007f8697db14f1 n/a (libglib-2.0.so.0 + 0x524f1)#012#4 0x00007f8697ddaad1 n/a (libglib-2.0.so.0 + 0x7bad1)#012#5 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#6 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6827:#012#0 0x00007f8698a037b1 futex_abstimed_wait_cancelable (libpthread.so.0 + 0x107b1)#012#1 0x00007f869a3e3ad2 n/a (VBoxXPCOM.so + 0xadad2)#012#2 0x00007f869a3e3ef6 VBoxNsprPR_WaitCondVar (VBoxXPCOM.so + 0xadef6)#012#3 0x00007f869a3e41b8 VBoxNsprPR_Wait (VBoxXPCOM.so + 0xae1b8)#012#4 0x00007f8690641e62 n/a (VBoxXPCOMIPCC.so + 0xce62)#012#5 0x00007f8690642f74 n/a (VBoxXPCOMIPCC.so + 0xdf74)#012#6 0x00007f869064909e n/a (VBoxXPCOMIPCC.so + 0x1409e)#012#7 0x00007f869a3de800 n/a (VBoxXPCOM.so + 0xa8800)#012#8 0x00007f869a3ddc3d n/a (VBoxXPCOM.so + 0xa7c3d)#012#9 0x00007f869add6ca0 _ZN12CEventSource8GetEventERK14CEventListeneri (UICommon.so + 0x4e5ca0)#012#10 0x00007f869ab90320 n/a (UICommon.so + 0x29f320)#012#11 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#12 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#13 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6810:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f869a3e3f51 VBoxNsprPR_WaitCondVar (VBoxXPCOM.so + 0xadf51)#012#2 0x00007f869a3e41b8 VBoxNsprPR_Wait (VBoxXPCOM.so + 0xae1b8)#012#3 0x00007f869064b4d5 n/a (VBoxXPCOMIPCC.so + 0x164d5)#012#4 0x00007f869a3d0845 n/a (VBoxXPCOM.so + 0x9a845)#012#5 0x00007f869a3e2a5d n/a (VBoxXPCOM.so + 0xaca5d)#012#6 0x00007f869a71e8d8 n/a (VBoxRT.so + 0x18d8d8)#012#7 0x00007f869a7e1192 n/a (VBoxRT.so + 0x250192)#012#8 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#9 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6799:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8698413c1a n/a (libxcb.so.1 + 0xbc1a)#012#2 0x00007f869841590a xcb_wait_for_event (libxcb.so.1 + 0xd90a)#012#3 0x00007f8694184298 n/a (libQt5XcbQpa.so.5 + 0x78298)#012#4 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#5 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#6 0x00007f8698ddc293 clone (libc.so.6 + 0x122293) Jul 31 11:45:00 gc02 systemd[1]: systemd-coredump@…: Succeeded.

[gombara]

Replying to Bughunter: Could you please paste the log again? it is very difficult to make a sense of it as it is. Thanks

I can confirm this with:

Intel Iris Xe graphics

Linux Mint 20.2 Cinnamon

Kernel 5.11.0-25-generic

Virtualbox 6.1.26

Syslog:

Jul 31 11:45:00 gc02 kernel: [ 281.254056] VirtualBox[6785]: segfault at 289 ip 00007f869992a9f8 sp 00007ffe2256e428 error 4 in libQt5Gui.so.5.12.8[7f86998d5000+41d000] Jul 31 11:45:00 gc02 kernel: [ 281.254072] Code: ff e8 2c ec fa ff e9 4c ff ff ff 0f 1f 80 00 00 00 00 48 89 de e8 98 e9 fa ff eb c7 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b 47 08 <48> 83 78 78 00 0f 94 c0 c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f Jul 31 11:45:00 gc02 systemd[1]: Started Process Core Dump (PID 6834/UID 0). Jul 31 11:45:00 gc02 systemd-coredump[6835]: Process 6785 (VirtualBox) of user 1000 dumped core.#012#012Stack trace of thread 6785:#012#0 0x00007f869992a9f8 _ZNK7QWindow10isTopLevelEv (libQt5Gui.so.5 + 0x12a9f8)#012#1 0x00007f869992d968 _ZN14QWindowPrivate27maybeQuitOnLastWindowClosedEv (libQt5Gui.so.5 + 0x12d968)#012#2 0x00007f8699931a61 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5 + 0x131a61)#012#3 0x00007f869933147c n/a (libQt5Widgets.so.5 + 0x1cc47c)#012#4 0x00007f86992cfa66 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x16aa66)#012#5 0x00007f86992d90f0 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x1740f0)#012#6 0x00007f869a07193a _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x28693a)#012#7 0x00007f8699923635 _ZN22QGuiApplicationPrivate17processCloseEventEPN29QWindowSystemInterfacePrivate10CloseEventE (libQt5Gui.so.5 + 0x123635)#012#8 0x00007f8699928132 _ZN22QGuiApplicationPrivate24processWindowSystemEventEPN29QWindowSystemInterfacePrivate17WindowSystemEventE (libQt5Gui.so.5 + 0x128132)#012#9 0x00007f869990235b _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5 + 0x10235b)#012#10 0x00007f869418532e n/a (libQt5XcbQpa.so.5 + 0x7932e)#012#11 0x00007f8697db117d g_main_context_dispatch (libglib-2.0.so.0 + 0x5217d)#012#12 0x00007f8697db1400 n/a (libglib-2.0.so.0 + 0x52400)#012#13 0x00007f8697db14a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3)#012#14 0x00007f869a0c9565 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2de565)#012#15 0x00007f869a0704db _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2854db)#012#16 0x00007f869a078246 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x28d246)#012#17 0x000055b725147168 n/a (VirtualBox + 0x95168)#012#18 0x000055b7251449e6 n/a (VirtualBox + 0x929e6)#012#19 0x00007f8698ce10b3 libc_start_main (libc.so.6 + 0x270b3)#012#20 0x000055b72514640e n/a (VirtualBox + 0x9440e)#012#012Stack trace of thread 6800:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f8690f22b5b n/a (iris_dri.so + 0x4bab5b)#012#2 0x00007f8690f2275b n/a (iris_dri.so + 0x4ba75b)#012#3 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#4 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6804:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8697db136e n/a (libglib-2.0.so.0 + 0x5236e)#012#2 0x00007f8697db14a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3)#012#3 0x00007f869a0c9565 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2de565)#012#4 0x00007f869a0704db _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2854db)#012#5 0x00007f8699ea8785 _ZN7QThread4execEv (libQt5Core.so.5 + 0xbd785)#012#6 0x00007f8694040efa n/a (libQt5DBus.so.5 + 0x17efa)#012#7 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#8 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#9 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6802:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f8690f22b5b n/a (iris_dri.so + 0x4bab5b)#012#2 0x00007f8690f2275b n/a (iris_dri.so + 0x4ba75b)#012#3 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#4 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6828:#012#0 0x00007f8698a037b1 futex_abstimed_wait_cancelable (libpthread.so.0 + 0x107b1)#012#1 0x00007f869a7e331c RTSemEventWait (VBoxRT.so + 0x25231c)#012#2 0x00007f868456c817 n/a (VBoxC.so + 0x127817)#012#3 0x00007f868456c9ea n/a (VBoxC.so + 0x1279ea)#012#4 0x00007f86846f1f0b n/a (VBoxC.so + 0x2acf0b)#012#5 0x00007f869add6ca0 _ZN12CEventSource8GetEventERK14CEventListeneri (UICommon.so + 0x4e5ca0)#012#6 0x00007f869ab90320 n/a (UICommon.so + 0x29f320)#012#7 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#8 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#9 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6803:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f8690f22b5b n/a (iris_dri.so + 0x4bab5b)#012#2 0x00007f8690f2275b n/a (iris_dri.so + 0x4ba75b)#012#3 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#4 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6830:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8697db136e n/a (libglib-2.0.so.0 + 0x5236e)#012#2 0x00007f8697db16f3 g_main_loop_run (libglib-2.0.so.0 + 0x526f3)#012#3 0x00007f8692ce2f8a n/a (libgio-2.0.so.0 + 0x11ef8a)#012#4 0x00007f8697ddaad1 n/a (libglib-2.0.so.0 + 0x7bad1)#012#5 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#6 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6808:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f869a7e3411 RTSemEventWait (VBoxRT.so + 0x252411)#012#2 0x00007f869a71c207 RTReqQueueProcess (VBoxRT.so + 0x18b207)#012#3 0x00007f869a7e0d76 n/a (VBoxRT.so + 0x24fd76)#012#4 0x00007f869a71e8d8 n/a (VBoxRT.so + 0x18d8d8)#012#5 0x00007f869a7e1192 n/a (VBoxRT.so + 0x250192)#012#6 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#7 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6829:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8697db136e n/a (libglib-2.0.so.0 + 0x5236e)#012#2 0x00007f8697db14a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3)#012#3 0x00007f8697db14f1 n/a (libglib-2.0.so.0 + 0x524f1)#012#4 0x00007f8697ddaad1 n/a (libglib-2.0.so.0 + 0x7bad1)#012#5 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#6 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6827:#012#0 0x00007f8698a037b1 futex_abstimed_wait_cancelable (libpthread.so.0 + 0x107b1)#012#1 0x00007f869a3e3ad2 n/a (VBoxXPCOM.so + 0xadad2)#012#2 0x00007f869a3e3ef6 VBoxNsprPR_WaitCondVar (VBoxXPCOM.so + 0xadef6)#012#3 0x00007f869a3e41b8 VBoxNsprPR_Wait (VBoxXPCOM.so + 0xae1b8)#012#4 0x00007f8690641e62 n/a (VBoxXPCOMIPCC.so + 0xce62)#012#5 0x00007f8690642f74 n/a (VBoxXPCOMIPCC.so + 0xdf74)#012#6 0x00007f869064909e n/a (VBoxXPCOMIPCC.so + 0x1409e)#012#7 0x00007f869a3de800 n/a (VBoxXPCOM.so + 0xa8800)#012#8 0x00007f869a3ddc3d n/a (VBoxXPCOM.so + 0xa7c3d)#012#9 0x00007f869add6ca0 _ZN12CEventSource8GetEventERK14CEventListeneri (UICommon.so + 0x4e5ca0)#012#10 0x00007f869ab90320 n/a (UICommon.so + 0x29f320)#012#11 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#12 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#13 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6810:#012#0 0x00007f8698a03376 futex_wait_cancelable (libpthread.so.0 + 0x10376)#012#1 0x00007f869a3e3f51 VBoxNsprPR_WaitCondVar (VBoxXPCOM.so + 0xadf51)#012#2 0x00007f869a3e41b8 VBoxNsprPR_Wait (VBoxXPCOM.so + 0xae1b8)#012#3 0x00007f869064b4d5 n/a (VBoxXPCOMIPCC.so + 0x164d5)#012#4 0x00007f869a3d0845 n/a (VBoxXPCOM.so + 0x9a845)#012#5 0x00007f869a3e2a5d n/a (VBoxXPCOM.so + 0xaca5d)#012#6 0x00007f869a71e8d8 n/a (VBoxRT.so + 0x18d8d8)#012#7 0x00007f869a7e1192 n/a (VBoxRT.so + 0x250192)#012#8 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#9 0x00007f8698ddc293 clone (libc.so.6 + 0x122293)#012#012Stack trace of thread 6799:#012#0 0x00007f8698dcfaff GI_poll (libc.so.6 + 0x115aff)#012#1 0x00007f8698413c1a n/a (libxcb.so.1 + 0xbc1a)#012#2 0x00007f869841590a xcb_wait_for_event (libxcb.so.1 + 0xd90a)#012#3 0x00007f8694184298 n/a (libQt5XcbQpa.so.5 + 0x78298)#012#4 0x00007f8699ea99d2 n/a (libQt5Core.so.5 + 0xbe9d2)#012#5 0x00007f86989fc609 start_thread (libpthread.so.0 + 0x9609)#012#6 0x00007f8698ddc293 clone (libc.so.6 + 0x122293) Jul 31 11:45:00 gc02 systemd[1]: systemd-coredump@…: Succeeded.

[gombara]

I think more important variable here is the Qt version VirtualBox uses. In Fedora 32 and Linux 20 that would be distro Qt most probably. Can someone experiencing this crash tell me which Qt version is being used? A quick try on my build machine failed to reproduce this. Thanks.

[Artem S. Tashkinov]

This was fixed in recent VBox 6.1.x releases.

Please close the report.