(gdb) bt #0 0x0000000000000000 in ?? () #1 0x00007fffe26f86ee in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #2 0x00007fffe26f82f1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #3 0x00007fffe28e1e85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #4 0x00007fffe28e1f13 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #5 0x00007fffe28e1f62 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #6 0x00007fffe2b163f2 in ?? () from /usr/lib/x86_64-linux-gnu/vlc/plugins/gui/libqt4_plugin.so #7 0x00007fffe2b204ee in ?? () from /usr/lib/x86_64-linux-gnu/vlc/plugins/gui/libqt4_plugin.so #8 0x00007fffe2b271a6 in ?? () from /usr/lib/x86_64-linux-gnu/vlc/plugins/gui/libqt4_plugin.so #9 0x00007fffe2b1070d in ?? () from /usr/lib/x86_64-linux-gnu/vlc/plugins/gui/libqt4_plugin.so #10 0x00007ffff79a2424 in start_thread (arg=0x7fffe015c700) at pthread_create.c:333 #11 0x00007ffff74e19bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 (gdb)