root@debian:/home/lorenzo# gdb -p 6513 GNU gdb (Debian 7.10-1.1) 7.10 Copyright (C) 2015 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> 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: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word". Attaching to process 6513 Reading symbols from /bin/dash...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...(no debugging symbols found)...done. Reading symbols from /usr/lib/x86_64-linux-gnu/libGL.so.1...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/librt.so.1...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...(no debugging symbols found)...done. Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...(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". Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu/libexpat.so.1...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-present.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-randr.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-xfixes.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-render.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-shape.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-sync.so.1...(no debugging symbols found)...done. Reading symbols from /usr/lib/x86_64-linux-gnu/libxshmfence.so.1...(no debugging symbols found)...done. Reading symbols from /usr/lib/x86_64-linux-gnu/libglapi.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libXext.so.6...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libXdamage.so.1...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libXfixes.so.3...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libX11-xcb.so.1...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libX11.so.6...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-glx.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libxcb.so.1...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libXxf86vm.so.1...(no debugging symbols found)...done. Reading symbols from /usr/lib/x86_64-linux-gnu/libdrm.so.2...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libgcc_s.so.1...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libXau.so.6...(no debugging symbols found)...done. Reading symbols from /home/lorenzo/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libXdmcp.so.6...(no debugging symbols found)...done. 0x00007fb91e9ea65a in wait4 () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) continue Continuing. [Inferior 1 (process 6513) exited normally] (gdb) bt full No stack. (gdb) q