root@debian:/home/lorenzo# gdb -p 6513
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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