GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: ... Attaching to process 21639 Reading symbols from /usr/lib/virtualbox/VBoxHeadless...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0...(no debugging symbols found)...done. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7f9df06cf700 (LWP 21835)] [New Thread 0x7f9dc115f700 (LWP 21668)] [New Thread 0x7f9dae8a4700 (LWP 21667)] [New Thread 0x7f9daf0a5700 (LWP 21666)] [New Thread 0x7f9dc147e700 (LWP 21660)] [New Thread 0x7f9dc149f700 (LWP 21659)] [New Thread 0x7f9dc14c0700 (LWP 21658)] [New Thread 0x7f9dc2e42700 (LWP 21657)] [New Thread 0x7f9dc314d700 (LWP 21656)] [New Thread 0x7f9dd074b700 (LWP 21655)] [New Thread 0x7f9dd07cc700 (LWP 21654)] [New Thread 0x7f9dd2775700 (LWP 21653)] [New Thread 0x7f9dd29ff700 (LWP 21652)] [New Thread 0x7f9df00f8700 (LWP 21651)] [New Thread 0x7f9df0179700 (LWP 21650)] [New Thread 0x7f9df03cd700 (LWP 21649)] [New Thread 0x7f9df064e700 (LWP 21648)] [New Thread 0x7f9df087d700 (LWP 21646)] [New Thread 0x7f9df08fe700 (LWP 21644)] [New Thread 0x7f9df8d24700 (LWP 21642)] [New Thread 0x7f9df8d45700 (LWP 21641)] Loaded symbols for /lib/x86_64-linux-gnu/libpthread.so.0 Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libdl.so.2 Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /usr/lib/virtualbox/VBoxRT.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxRT.so Reading symbols from /lib/x86_64-linux-gnu/libcrypt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libcrypt.so.1 Reading symbols from /lib/x86_64-linux-gnu/libz.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libz.so.1 Reading symbols from /lib/x86_64-linux-gnu/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/librt.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libxml2.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxml2.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libcurl.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libcurl.so.4 Reading symbols from /lib/x86_64-linux-gnu/libssl.so.1.0.0...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libssl.so.1.0.0 Reading symbols from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libcrypto.so.1.0.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libstdc++.so.6 Reading symbols from /lib/x86_64-linux-gnu/libgcc_s.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libgcc_s.so.1 Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libm.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libidn.so.11...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libidn.so.11 Reading symbols from /usr/lib/x86_64-linux-gnu/liblber-2.4.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/liblber-2.4.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/librtmp.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/librtmp.so.0 Reading symbols from /lib/x86_64-linux-gnu/libresolv.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libresolv.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libsasl2.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libsasl2.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libgssapi.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libgssapi.so.3 Reading symbols from /usr/lib/x86_64-linux-gnu/libgnutls.so.26...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libgnutls.so.26 Reading symbols from /lib/x86_64-linux-gnu/libgcrypt.so.11...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libgcrypt.so.11 Reading symbols from /usr/lib/x86_64-linux-gnu/libkrb5.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libkrb5.so.3 Reading symbols from /usr/lib/x86_64-linux-gnu/libk5crypto.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libk5crypto.so.3 Reading symbols from /lib/x86_64-linux-gnu/libcom_err.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libcom_err.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libkrb5support.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libkrb5support.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libheimntlm.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libheimntlm.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libkrb5.so.26...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libkrb5.so.26 Reading symbols from /usr/lib/x86_64-linux-gnu/libasn1.so.8...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libasn1.so.8 Reading symbols from /usr/lib/x86_64-linux-gnu/libhcrypto.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libhcrypto.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/libroken.so.18...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libroken.so.18 Reading symbols from /usr/lib/x86_64-linux-gnu/libtasn1.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libtasn1.so.3 Reading symbols from /usr/lib/x86_64-linux-gnu/libp11-kit.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libp11-kit.so.0 Reading symbols from /lib/x86_64-linux-gnu/libgpg-error.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libgpg-error.so.0 Reading symbols from /lib/x86_64-linux-gnu/libkeyutils.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libkeyutils.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libwind.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libwind.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libheimbase.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libheimbase.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libhx509.so.5...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libhx509.so.5 Reading symbols from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 Reading symbols from /usr/lib/virtualbox/VBoxHeadless.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxHeadless.so Reading symbols from /usr/lib/virtualbox/VBoxXPCOM.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxXPCOM.so Reading symbols from /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_compat.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libnsl.so.1 Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_nis.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2 Reading symbols from /usr/lib/virtualbox/components/VBoxVMM.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/components/VBoxVMM.so Reading symbols from /usr/lib/virtualbox/VBoxREM.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxREM.so Reading symbols from /usr/lib/virtualbox/components/VBoxC.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/components/VBoxC.so Reading symbols from /lib/x86_64-linux-gnu/libpng12.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libpng12.so.0 Reading symbols from /usr/lib/libvpx.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libvpx.so.1 Reading symbols from /usr/lib/virtualbox/components/VBoxSVCM.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/components/VBoxSVCM.so Reading symbols from /usr/lib/virtualbox/VBoxSharedClipboard.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxSharedClipboard.so Reading symbols from /usr/lib/x86_64-linux-gnu/libXt.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXt.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libX11.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libX11.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libSM.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libSM.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libICE.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libICE.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxcb.so.1 Reading symbols from /lib/x86_64-linux-gnu/libuuid.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libuuid.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libXau.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXau.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libXdmcp.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 Reading symbols from /usr/lib/virtualbox/VBoxDragAndDropSvc.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxDragAndDropSvc.so Reading symbols from /usr/lib/virtualbox/VBoxGuestPropSvc.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxGuestPropSvc.so Reading symbols from /usr/lib/virtualbox/VBoxGuestControlSvc.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxGuestControlSvc.so Reading symbols from /usr/lib/virtualbox/VBoxDD.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxDD.so Reading symbols from /usr/lib/virtualbox/VBoxDDU.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxDDU.so Reading symbols from /usr/lib/virtualbox/VBoxDD2.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxDD2.so Reading symbols from /usr/lib/virtualbox/VBoxSharedFolders.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxSharedFolders.so Reading symbols from /usr/lib/x86_64-linux-gnu/libasound.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libasound.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libpulse.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libpulse.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libjson.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libjson.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so Reading symbols from /lib/x86_64-linux-gnu/libdbus-1.so.3...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libdbus-1.so.3 Reading symbols from /lib/x86_64-linux-gnu/libwrap.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libwrap.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libsndfile.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libsndfile.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libasyncns.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libasyncns.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libFLAC.so.8...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libFLAC.so.8 Reading symbols from /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libvorbis.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libvorbis.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libogg.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libogg.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_pcm_pulse.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_pcm_pulse.so 0x00007f9df85d0763 in select () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) info threads Id Target Id Frame 22 Thread 0x7f9df8d45700 (LWP 21641) "nspr-1" 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 21 Thread 0x7f9df8d24700 (LWP 21642) "nspr-2" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 20 Thread 0x7f9df08fe700 (LWP 21644) "VBoxSVCWatcher" 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 19 Thread 0x7f9df087d700 (LWP 21646) "TimerLR" 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 18 Thread 0x7f9df064e700 (LWP 21648) "MainHGCMthread" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 17 Thread 0x7f9df03cd700 (LWP 21649) "EMT" 0x00007f9df85cfc67 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 16 Thread 0x7f9df0179700 (LWP 21650) "ShClipboard" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 15 Thread 0x7f9df00f8700 (LWP 21651) "DragAndDropSvc" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 14 Thread 0x7f9dd29ff700 (LWP 21652) "GuestPropSvc" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 13 Thread 0x7f9dd2775700 (LWP 21653) "GuestControlSvc" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 12 Thread 0x7f9dd07cc700 (LWP 21654) "Timer" 0x00007f9df851a775 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 11 Thread 0x7f9dd074b700 (LWP 21655) "PDMNsTx" 0x00007f9df8ab652d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0 10 Thread 0x7f9dc314d700 (LWP 21656) "ShFolders" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 9 Thread 0x7f9dc2e42700 (LWP 21657) "Port1" 0x00007f9df85cfc67 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 8 Thread 0x7f9dc14c0700 (LWP 21658) "NATRX" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 7 Thread 0x7f9dc149f700 (LWP 21659) "NATURGRX" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 6 Thread 0x7f9dc147e700 (LWP 21660) "NAT" 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 5 Thread 0x7f9daf0a5700 (LWP 21666) "threaded-ml" 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 4 Thread 0x7f9dae8a4700 (LWP 21667) "threaded-ml" 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 3 Thread 0x7f9dc115f700 (LWP 21668) "ACPI Poller" 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 2 Thread 0x7f9df06cf700 (LWP 21835) "VMPwrDwn" 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 * 1 Thread 0x7f9df8ed0700 (LWP 21639) "VBoxHeadless" 0x00007f9df85d0763 in select () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) tbt #0 0x00007f9df85d0763 in select () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9df2890937 in ?? () from /usr/lib/virtualbox/VBoxHeadless.so #2 0x00007f9df2890e6c in ?? () from /usr/lib/virtualbox/VBoxHeadless.so #3 0x00007f9df288a9e1 in TrustedMain () from /usr/lib/virtualbox/VBoxHeadless.so #4 0x00007f9df850476d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 #5 0x0000000000401215 in ?? () #6 0x00007fffbd4076b8 in ?? () #7 0x000000000000001c in ?? () #8 0x0000000000000007 in ?? () #9 0x00007fffbd408d9f in ?? () #10 0x00007fffbd408dc0 in ?? () #11 0x00007fffbd408dca in ?? () #12 0x00007fffbd408e03 in ?? () #13 0x00007fffbd408e0d in ?? () #14 0x00007fffbd408e32 in ?? () #15 0x00007fffbd408e39 in ?? () #16 0x0000000000000000 in ?? () (gdb) t 2 [Switching to thread 2 (Thread 0x7f9df06cf700 (LWP 21835))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c35e in RTSemEventWait () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df17a9f1a in VMR3ReqWait () from /usr/lib/virtualbox/components/VBoxVMM.so #3 0x00007f9df17aa388 in VMR3ReqCallVU () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f9df17aab68 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #5 0x00007f9df17ae8f4 in VMMR3EmtRendezvous () from /usr/lib/virtualbox/components/VBoxVMM.so #6 0x00007f9df105e4e1 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #7 0x00007f9df105e715 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #8 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #9 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #10 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #11 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #12 0x0000000000000000 in ?? () (gdb) t 3 [Switching to thread 3 (Thread 0x7f9dc115f700 (LWP 21668))] #0 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c47b in RTSemEventWait () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9dc35d8c63 in ?? () from /usr/lib/virtualbox/VBoxDD.so #3 0x00007f9df17639ad in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #6 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #7 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #8 0x0000000000000000 in ?? () (gdb) t 4 [Switching to thread 4 (Thread 0x7f9dae8a4700 (LWP 21667))] #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9dc0d4635f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #2 0x00007f9dc0d3776c in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #3 0x00007f9dc0d37dd9 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #4 0x00007f9dc0d37e90 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #5 0x00007f9dc0d4630f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #6 0x00007f9dc08efd18 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so #7 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #8 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #9 0x0000000000000000 in ?? () (gdb) t 5 [Switching to thread 5 (Thread 0x7f9daf0a5700 (LWP 21666))] #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9dc0d4635f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #2 0x00007f9dc0d3776c in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #3 0x00007f9dc0d37dd9 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #4 0x00007f9dc0d37e90 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #5 0x00007f9dc0d4630f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #6 0x00007f9dc08efd18 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so #7 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #8 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #9 0x0000000000000000 in ?? () (gdb) t 6 [Switching to thread 6 (Thread 0x7f9dc147e700 (LWP 21660))] #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9dc3637afd in ?? () from /usr/lib/virtualbox/VBoxDD.so #2 0x00007f9df17639ad in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #3 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #4 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #6 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #7 0x0000000000000000 in ?? () (gdb) t 7 [Switching to thread 7 (Thread 0x7f9dc149f700 (LWP 21659))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c35e in RTSemEventWait () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9dc3635a68 in ?? () from /usr/lib/virtualbox/VBoxDD.so #3 0x00007f9df17639ad in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #6 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #7 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #8 0x0000000000000000 in ?? () (gdb) t 8 [Switching to thread 8 (Thread 0x7f9dc14c0700 (LWP 21658))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c35e in RTSemEventWait () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9dc3635ae8 in ?? () from /usr/lib/virtualbox/VBoxDD.so #3 0x00007f9df17639ad in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #6 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #7 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #8 0x0000000000000000 in ?? () (gdb) t 9 [Switching to thread 9 (Thread 0x7f9dc2e42700 (LWP 21657))] #0 0x00007f9df85cfc67 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df85cfc67 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9df825372d in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df824e755 in SUPSemEventWaitNoResume () from /usr/lib/virtualbox/VBoxRT.so #3 0x00007f9dc362323b in ?? () from /usr/lib/virtualbox/VBoxDD.so #4 0x00007f9df17639ad in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #5 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #6 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #8 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #9 0x0000000000000000 in ?? () (gdb) t 10 [Switching to thread 10 (Thread 0x7f9dc314d700 (LWP 21656))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c9b5 in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df112a0ee in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df112a593 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #4 0x00007f9df112b2cb in ?? () from /usr/lib/virtualbox/components/VBoxC.so #5 0x00007f9df1129aac in ?? () from /usr/lib/virtualbox/components/VBoxC.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 11 [Switching to thread 11 (Thread 0x7f9dd074b700 (LWP 21655))] #0 0x00007f9df8ab652d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab652d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df8249dff in RTThreadSleep () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df1859bda in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #3 0x00007f9df1763a1d in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #6 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #7 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #8 0x0000000000000000 in ?? () (gdb) t 12 [Switching to thread 12 (Thread 0x7f9dd07cc700 (LWP 21654))] #0 0x00007f9df851a775 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df851a775 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9df851a819 in sigwaitinfo () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007f9df824a221 in ?? () from /usr/lib/virtualbox/VBoxRT.so #3 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #4 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #6 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #7 0x0000000000000000 in ?? () (gdb) t 13 [Switching to thread 13 (Thread 0x7f9dd2775700 (LWP 21653))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c9b5 in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df112a0ee in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df112a593 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #4 0x00007f9df112b2cb in ?? () from /usr/lib/virtualbox/components/VBoxC.so #5 0x00007f9df1129aac in ?? () from /usr/lib/virtualbox/components/VBoxC.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 14 [Switching to thread 14 (Thread 0x7f9dd29ff700 (LWP 21652))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c9b5 in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df112a0ee in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df112a593 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #4 0x00007f9df112b2cb in ?? () from /usr/lib/virtualbox/components/VBoxC.so #5 0x00007f9df1129aac in ?? () from /usr/lib/virtualbox/components/VBoxC.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 15 [Switching to thread 15 (Thread 0x7f9df00f8700 (LWP 21651))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c9b5 in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df112a0ee in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df112a593 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #4 0x00007f9df112b2cb in ?? () from /usr/lib/virtualbox/components/VBoxC.so #5 0x00007f9df1129aac in ?? () from /usr/lib/virtualbox/components/VBoxC.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 16 [Switching to thread 16 (Thread 0x7f9df0179700 (LWP 21650))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c9b5 in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df112a0ee in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df112a593 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #4 0x00007f9df112b2cb in ?? () from /usr/lib/virtualbox/components/VBoxC.so #5 0x00007f9df1129aac in ?? () from /usr/lib/virtualbox/components/VBoxC.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 17 [Switching to thread 17 (Thread 0x7f9df03cd700 (LWP 21649))] #0 0x00007f9df85cfc67 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df85cfc67 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9df825372d in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df82507e6 in SUPR3CallVMMR0Ex () from /usr/lib/virtualbox/VBoxRT.so #3 0x00007f9df17a7c3b in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f9df174d8a1 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #5 0x00007f9df174fa5c in PDMR3PowerOff () from /usr/lib/virtualbox/components/VBoxVMM.so #6 0x00007f9df17a4552 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #7 0x00007f9df17ae8b4 in VMMR3EmtRendezvous () from /usr/lib/virtualbox/components/VBoxVMM.so #8 0x00007f9df17a9b62 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #9 0x00007f9df17aac3d in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #10 0x00007f9df17404da in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #11 0x00007f9df17445aa in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #12 0x00007f9df1741a41 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #13 0x00007f9df17a8e6e in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #14 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #15 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #16 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #17 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #18 0x0000000000000000 in ?? () (gdb) t 18 [Switching to thread 18 (Thread 0x7f9df064e700 (LWP 21648))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c9b5 in ?? () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df112a0ee in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df112a593 in ?? () from /usr/lib/virtualbox/components/VBoxC.so #4 0x00007f9df112c84c in ?? () from /usr/lib/virtualbox/components/VBoxC.so #5 0x00007f9df1129aac in ?? () from /usr/lib/virtualbox/components/VBoxC.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 1899 [Switching to thread 19 (Thread 0x7f9df087d700 (LWP 21646))] #0 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c47b in RTSemEventWait () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df821ed70 in ?? () from /usr/lib/virtualbox/VBoxRT.so #3 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #4 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #6 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #7 0x0000000000000000 in ?? () (gdb) t 20 [Switching to thread 20 (Thread 0x7f9df08fe700 (LWP 21644))] #0 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab30fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df824c47b in RTSemEventWait () from /usr/lib/virtualbox/VBoxRT.so #2 0x00007f9df10e4f0b in ?? () from /usr/lib/virtualbox/components/VBoxC.so #3 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #4 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #5 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #6 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #7 0x0000000000000000 in ?? () (gdb) t 21 [Switching to thread 21 (Thread 0x7f9df8d24700 (LWP 21642))] #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 (gdb) bt #0 0x00007f9df8ab2d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00007f9df261364a in VBoxNsprPR_WaitCondVar () from /usr/lib/virtualbox/VBoxXPCOM.so #2 0x00007f9df261391a in VBoxNsprPR_Wait () from /usr/lib/virtualbox/VBoxXPCOM.so #3 0x00007f9df2361184 in ?? () from /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so #4 0x00007f9df26023a3 in ?? () from /usr/lib/virtualbox/VBoxXPCOM.so #5 0x00007f9df261247a in ?? () from /usr/lib/virtualbox/VBoxXPCOM.so #6 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #8 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #9 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () (gdb) t 22 [Switching to thread 22 (Thread 0x7f9df8d45700 (LWP 21641))] #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f9df85cba43 in poll () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f9df26146fe in ?? () from /usr/lib/virtualbox/VBoxXPCOM.so #2 0x00007f9df26173c1 in VBoxNsprPR_Poll () from /usr/lib/virtualbox/VBoxXPCOM.so #3 0x00007f9df23647cb in ?? () from /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so #4 0x00007f9df261247a in ?? () from /usr/lib/virtualbox/VBoxXPCOM.so #5 0x00007f9df81e6fcc in ?? () from /usr/lib/virtualbox/VBoxRT.so #6 0x00007f9df82498ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #7 0x00007f9df8aaee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #8 0x00007f9df85d73fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 #9 0x0000000000000000 in ?? () (gdb) quit A debugging session is active. Inferior 1 [process 21639] will be detached. Quit anyway? (y or n) Detaching from program: /usr/lib/virtualbox/VBoxHeadless, process 21639