$ sudo gdb -p 2005 GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 Copyright (C) 2014 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". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word". Attaching to process 2005 Reading symbols from /usr/lib/virtualbox/VirtualBox...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libpthread-2.19.so...done. done. [New LWP 2067] [New LWP 2066] [New LWP 2065] [New LWP 2064] [New LWP 2063] [New LWP 2062] [New LWP 2061] [New LWP 2060] [New LWP 2059] [New LWP 2058] [New LWP 2057] [New LWP 2056] [New LWP 2055] [New LWP 2054] [New LWP 2053] [New LWP 2049] [New LWP 2047] [New LWP 2046] [New LWP 2045] [New LWP 2039] [New LWP 2038] [New LWP 2021] [New LWP 2017] [New LWP 2016] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Loaded symbols for /lib/x86_64-linux-gnu/libpthread.so.0 Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libdl.so.2 Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done. 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...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libcrypt-2.19.so...done. 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...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/librt-2.19.so...done. 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-gnutls.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...Reading symbols from /usr/lib/debug//usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.20...done. 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...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libgcc_s.so.1...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libgcc_s.so.1 Reading symbols from /lib/x86_64-linux-gnu/liblzma.so.5...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/liblzma.so.5 Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libm-2.19.so...done. 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/librtmp.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/librtmp.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libssh2.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libssh2.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libnettle.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libnettle.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/libgnutls-deb0.so.28...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libgnutls-deb0.so.28 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/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/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/libhogweed.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libhogweed.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libgmp.so.10...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libgmp.so.10 Reading symbols from /lib/x86_64-linux-gnu/libgcrypt.so.20...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libgcrypt.so.20 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 /usr/lib/x86_64-linux-gnu/libtasn1.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libtasn1.so.6 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 /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 /lib/x86_64-linux-gnu/libresolv.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libresolv-2.19.so...done. 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 /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 /usr/lib/x86_64-linux-gnu/libffi.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libffi.so.6 Reading symbols from /usr/lib/virtualbox/VirtualBox.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VirtualBox.so Reading symbols from /usr/lib/x86_64-linux-gnu/libXinerama.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXinerama.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libGL.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libGL.so.1 Reading symbols from /usr/lib/virtualbox/VBoxKeyboard.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxKeyboard.so Reading symbols from /usr/lib/x86_64-linux-gnu/libXcursor.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXcursor.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libXext.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXext.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/virtualbox/VBoxXPCOM.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxXPCOM.so Reading symbols from /usr/lib/x86_64-linux-gnu/libQtCore.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libQtCore.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/libQtGui.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libQtGui.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/libQtNetwork.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libQtNetwork.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 Reading symbols from /lib/x86_64-linux-gnu/libexpat.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libexpat.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libglapi.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libglapi.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libXdamage.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXdamage.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libXfixes.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXfixes.so.3 Reading symbols from /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb-present.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxcb-present.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1 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 /usr/lib/x86_64-linux-gnu/libxshmfence.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libxshmfence.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libdrm.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libdrm.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libXrender.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXrender.so.1 Reading symbols from /lib/x86_64-linux-gnu/libglib-2.0.so.0...BFD: /usr/lib/debug/.build-id/c2/c04cc695a9fdd7eb2cce835ea39dbaafe0c7fa.debug: unable to initialize decompress status for section .zdebug_aranges warning: File "/usr/lib/debug/.build-id/c2/c04cc695a9fdd7eb2cce835ea39dbaafe0c7fa.debug" has no build-id, file skipped (no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libglib-2.0.so.0 Reading symbols from /usr/lib/x86_64-linux-gnu/libfontconfig.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libaudio.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libaudio.so.2 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/x86_64-linux-gnu/libfreetype.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libfreetype.so.6 Reading symbols from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0...BFD: /usr/lib/debug/.build-id/78/d6a206a3230a786725d52d3a4f2a02d6e9fc45.debug: unable to initialize decompress status for section .zdebug_aranges warning: File "/usr/lib/debug/.build-id/78/d6a206a3230a786725d52d3a4f2a02d6e9fc45.debug" has no build-id, file skipped (no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 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/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 /lib/x86_64-linux-gnu/libpcre.so.3...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libpcre.so.3 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 /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 /lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_files-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/gconv/UTF-16.so...Reading symbols from /usr/lib/debug//usr/lib/x86_64-linux-gnu/gconv/UTF-16.so...done. done. Loaded symbols for /usr/lib/x86_64-linux-gnu/gconv/UTF-16.so Reading symbols from /usr/lib/x86_64-linux-gnu/libicui18n.so.52...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libicui18n.so.52 Reading symbols from /usr/lib/x86_64-linux-gnu/libicuuc.so.52...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libicuuc.so.52 Reading symbols from /usr/lib/x86_64-linux-gnu/libicudata.so.52...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libicudata.so.52 Reading symbols from /usr/lib/x86_64-linux-gnu/libXrandr.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXrandr.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libXi.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXi.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...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_compat-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_compat.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnsl-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnsl.so.1 Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_nis-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_nis.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/VBoxSVCM.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/components/VBoxSVCM.so Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqgif.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqgif.so Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqico.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqico.so Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqjpeg.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqjpeg.so Reading symbols from /usr/lib/x86_64-linux-gnu/libjpeg.so.62...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libjpeg.so.62 Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqmng.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqmng.so Reading symbols from /usr/lib/x86_64-linux-gnu/libmng.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libmng.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/liblcms2.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/liblcms2.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqsvg.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqsvg.so Reading symbols from /usr/lib/x86_64-linux-gnu/libQtSvg.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libQtSvg.so.4 Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqtga.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqtga.so Reading symbols from /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqtiff.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqtiff.so Reading symbols from /usr/lib/x86_64-linux-gnu/libtiff.so.5...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libtiff.so.5 Reading symbols from /usr/lib/x86_64-linux-gnu/libjbig.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libjbig.so.0 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 /usr/lib/x86_64-linux-gnu/libvpx.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libvpx.so.1 Reading symbols from /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxPuelMain.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxPuelMain.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/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/VBoxSVGA3D.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/virtualbox/VBoxSVGA3D.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/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxHostWebcam.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxHostWebcam.so Reading symbols from /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxPciRawDrv.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxPciRawDrv.so Reading symbols from /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxEhciR3.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxEhciR3.so Reading symbols from /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxPciRawR3.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxPciRawR3.so Reading symbols from /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxUsbCardReaderR3.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxUsbCardReaderR3.so Reading symbols from /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxUsbWebcamR3.so...done. Loaded symbols for /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/VBoxUsbWebcamR3.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/libpulse.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libpulse.so.0 Reading symbols from /lib/x86_64-linux-gnu/libjson-c.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libjson-c.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-5.0.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-5.0.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/libcap.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libcap.so.2 Reading symbols from /usr/lib/x86_64-linux-gnu/libXtst.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libXtst.so.6 Reading symbols from /lib/x86_64-linux-gnu/libsystemd.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libsystemd.so.0 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 /lib/x86_64-linux-gnu/libattr.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libattr.so.1 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/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/libvorbis.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libvorbis.so.0 0x00007f04cd6d918d in poll () at ../sysdeps/unix/syscall-template.S:81 81 ../sysdeps/unix/syscall-template.S: No such file or directory. (gdb) c Continuing. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7f04b55ec700 (LWP 2039)] 0x00007f0482456561 in ?? () from /usr/lib/virtualbox/VBoxDD.so (gdb) bt #0 0x00007f0482456561 in ?? () from /usr/lib/virtualbox/VBoxDD.so #1 0x00007f048199bc42 in VUSBIRhReapAsyncUrbs (cMillies=, pInterface=0x7f049477a0e0) at /mnt/tinderbox/extpacks-4.3/include/VBox/vusb.h:600 #2 ehciR3FrameBoundaryTimer (pDevIns=, pTimer=, pvUser=0x7f04b474be70) at /mnt/tinderbox/extpacks-4.3/src/VBox/Devices/USB/DevEHCI.cpp:3376 #3 0x00007f04bd55ed1f in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #4 0x00007f04bd562dd6 in TMR3TimerQueuesDo () from /usr/lib/virtualbox/components/VBoxVMM.so #5 0x00007f04bd504088 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #6 0x00007f04bd50808b in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #7 0x00007f04bd505391 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #8 0x00007f04bd56c2d2 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so #9 0x00007f04cd2bf2cc in ?? () from /usr/lib/virtualbox/VBoxRT.so #10 0x00007f04cd3348ac in ?? () from /usr/lib/virtualbox/VBoxRT.so #11 0x00007f04cdbb10a4 in start_thread (arg=0x7f04b55ec700) at pthread_create.c:309 #12 0x00007f04cd6e1ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 (gdb) bt full #0 0x00007f0482456561 in ?? () from /usr/lib/virtualbox/VBoxDD.so No symbol table info available. #1 0x00007f048199bc42 in VUSBIRhReapAsyncUrbs (cMillies=, pInterface=0x7f049477a0e0) at /mnt/tinderbox/extpacks-4.3/include/VBox/vusb.h:600 No locals. #2 ehciR3FrameBoundaryTimer (pDevIns=, pTimer=, pvUser=0x7f04b474be70) at /mnt/tinderbox/extpacks-4.3/src/VBox/Devices/USB/DevEHCI.cpp:3376 pEhci = #3 0x00007f04bd55ed1f in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #4 0x00007f04bd562dd6 in TMR3TimerQueuesDo () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #5 0x00007f04bd504088 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #6 0x00007f04bd50808b in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #7 0x00007f04bd505391 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #8 0x00007f04bd56c2d2 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #9 0x00007f04cd2bf2cc in ?? () from /usr/lib/virtualbox/VBoxRT.so No symbol table info available. #10 0x00007f04cd3348ac in ?? () from /usr/lib/virtualbox/VBoxRT.so No symbol table info available. #11 0x00007f04cdbb10a4 in start_thread (arg=0x7f04b55ec700) at pthread_create.c:309 __res = pd = 0x7f04b55ec700 now = unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139658199484160, -8927841881205268479, 0, 139658612600928, 139658333177408, 139658199484160, 8795676999414161409, 8795658072937570305}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = pagesize_m1 = sp = freesize = __PRETTY_FUNCTION__ = "start_thread" #12 0x00007f04cd6e1ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 No locals. (gdb) info reg rax 0x7f049477a0e0 139657647464672 rbx 0x7f04b474be70 139658184146544 rcx 0x7f04b4732550 139658184041808 rdx 0x7f04b474be70 139658184146544 rsi 0x0 0 rdi 0x7f049477a0e0 139657647464672 rbp 0x7f04b55ebcd0 0x7f04b55ebcd0 rsp 0x7f04b55ebcb0 0x7f04b55ebcb0 r8 0x19828af 26749103 r9 0xffffffff 4294967295 r10 0x1a1ee1d85ea 1794996274666 r11 0x0 0 r12 0x7f04b474d410 139658184152080 r13 0x7f04b474d320 139658184151840 r14 0x7f04b474d3f0 139658184152048 r15 0x7f04b5394000 139658197024768 rip 0x7f0482456561 0x7f0482456561 eflags 0x10206 [ PF IF RF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 (gdb) x/i $rip => 0x7f0482456561: cmpq $0x0,0x618(%rsi) (gdb) p $rsi $1 = 0 (gdb) c Continuing. [Thread 0x7f04cdf7b700 (LWP 2016) exited] [Thread 0x7f04cdf5a700 (LWP 2017) exited] [Thread 0x7f04cde83700 (LWP 2021) exited] [Thread 0x7f04b586d700 (LWP 2038) exited] [Thread 0x7f04b55ec700 (LWP 2039) exited] [Thread 0x7f04b524e700 (LWP 2045) exited] [Thread 0x7f04b4fc3700 (LWP 2046) exited] [Thread 0x7f04b4d37700 (LWP 2047) exited] [Thread 0x7f04b4aae700 (LWP 2049) exited] [Thread 0x7f0482f7e700 (LWP 2053) exited] [Thread 0x7f0482efd700 (LWP 2054) exited] [Thread 0x7f048101d700 (LWP 2055) exited] [Thread 0x7f04b4022700 (LWP 2056) exited] [Thread 0x7f0480793700 (LWP 2057) exited] [Thread 0x7f0480130700 (LWP 2058) exited] [Thread 0x7f048010f700 (LWP 2059) exited] [Thread 0x7f04800ee700 (LWP 2060) exited] [Thread 0x7f0474c38700 (LWP 2061) exited] [Thread 0x7f04800cd700 (LWP 2062) exited] [Thread 0x7f04743b6700 (LWP 2064) exited] [Thread 0x7f0474335700 (LWP 2065) exited] [Thread 0x7f04742b4700 (LWP 2066) exited] [Thread 0x7f048004c700 (LWP 2067) exited] [Thread 0x7f04cdfb9700 (LWP 2005) exited] Program terminated with signal SIGSEGV, Segmentation fault. The program no longer exists. (gdb) quit