# gdb -p 18046 GNU gdb (GDB) 8.2.50.20180917-alt4 (ALT p9) Copyright (C) 2018 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-alt-linux". 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 18046 [New LWP 18047] [New LWP 18048] [New LWP 18049] [New LWP 18050] [New LWP 18051] [New LWP 18052] [New LWP 18058] warning: Loadable section ".note.ABI-tag" outside of ELF segments [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Missing separate debuginfo for /usr/lib64/libGLX_mesa.so.0 Try to install the hash file /usr/lib/debug/.build-id/10/674a66cd6d052d.debug Missing separate debuginfo for /usr/lib64/libglapi.so.0 Try to install the hash file /usr/lib/debug/.build-id/08/9e756b48a18458.debug Missing separate debuginfo for /usr/lib64/libXxf86vm.so.1 Try to install the hash file /usr/lib/debug/.build-id/1f/48299b100f0c35e944b71296244febdd6fcc04.debug Missing separate debuginfo for /usr/lib64/libxshmfence.so.1 Try to install the hash file /usr/lib/debug/.build-id/83/4292378ab0282d2c95882d433256edb9286e40.debug Missing separate debuginfo for /usr/lib64/X11/modules/dri/swrast_dri.so Try to install the hash file /usr/lib/debug/.build-id/ba/a7406a2e793cd4.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqicns.so Try to install the hash file /usr/lib/debug/.build-id/49/a96e54fb08391003f7df1e358208bbff67b15c.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqjp2.so Try to install the hash file /usr/lib/debug/.build-id/6d/d88f142177d202b0582fa6db1bf55eab00cce6.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqmng.so Try to install the hash file /usr/lib/debug/.build-id/65/0b1ccef15c642416851f18703a7934eabe9560.debug Missing separate debuginfo for /usr/lib64/libmng.so.2 Try to install the hash file /usr/lib/debug/.build-id/28/495aa12ed3678f59fe5a80f8a370ea6cdd391a.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqsvg.so Try to install the hash file /usr/lib/debug/.build-id/2d/c5e586fad63da51f9adfee6dfb4d354d47bef6.debug Missing separate debuginfo for /usr/lib64/libQt5Svg.so.5 Try to install the hash file /usr/lib/debug/.build-id/02/47a8ffba3e4a1b950f21f1ce0c7775debb676c.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqtga.so Try to install the hash file /usr/lib/debug/.build-id/8b/c2633e401d829e16a4bb9f37d9538950b825de.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqtiff.so Try to install the hash file /usr/lib/debug/.build-id/8c/988a22a548d3aed6eb6adab1b7cc23620d3276.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqwbmp.so Try to install the hash file /usr/lib/debug/.build-id/0f/fa98d185834b4c78fd03961a2f8103eae8507e.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/imageformats/libqwebp.so Try to install the hash file /usr/lib/debug/.build-id/f8/c43f38d7e02db5faea621af585945d60461577.debug Missing separate debuginfo for /usr/lib64/qt5/plugins/iconengines/libqsvgicon.so Try to install the hash file /usr/lib/debug/.build-id/17/879a5e0dd83f7e3146206584e8de487891070e.debug 0x00007f6b39c462b9 in __GI___poll (fds=0x1e8d8c0, nfds=2, timeout=11795) at ../sysdeps/unix/sysv/linux/poll.c:29 29 return SYSCALL_CANCEL (poll, fds, nfds, timeout); (gdb) bt #0 0x00007f6b39c462b9 in __GI___poll (fds=0x1e8d8c0, nfds=2, timeout=11795) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f6b38fb18f6 in g_main_context_poll (priority=, n_fds=2, fds=0x1e8d8c0, timeout=, context=0x7f6b30004fd0) at ../glib/gmain.c:4228 #2 g_main_context_iterate (context=context@entry=0x7f6b30004fd0, block=block@entry=1, dispatch=dispatch@entry=1, self=) at ../glib/gmain.c:3922 #3 0x00007f6b38fb1a1c in g_main_context_iteration (context=0x7f6b30004fd0, may_block=may_block@entry=1) at ../glib/gmain.c:3988 #4 0x00007f6b3a3c3d87 in QEventDispatcherGlib::processEvents (this=0x1d8f610, flags=...) at kernel/qeventdispatcher_glib.cpp:422 #5 0x00007f6b3a36f10b in QEventLoop::exec (this=this@entry=0x7ffff390e860, flags=..., flags@entry=...) at ../../src/corelib/global/qflags.h:140 #6 0x00007f6b3a3770d2 in QCoreApplication::exec () at ../../src/corelib/global/qflags.h:120 #7 0x00007f6b3a939c2c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1784 #8 0x00007f6b3af424e5 in QApplication::exec () at kernel/qapplication.cpp:2856 #9 0x0000000000439fcd in main (argc=, argv=0x7ffff390f418) at main.cc:148