.
Thread 4 (process 11945):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb78bd893 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7ebd889 in ?? () from /usr/lib/libX11.so.6
#3  0x080c8fc0 in ?? ()
#4  0x00000001 in ?? ()
#5  0xffffffff in ?? ()
#6  0xb7ec664f in _X11TransWrite () from /usr/lib/libX11.so.6
#7  0xb7ebdc7f in _XRead () from /usr/lib/libX11.so.6
#8  0xb7ebe654 in _XReply () from /usr/lib/libX11.so.6
#9  0xb7eb85ca in XSync () from /usr/lib/libX11.so.6
#10 0xb7e98e9a in XCloseDisplay () from /usr/lib/libX11.so.6
#11 0xb779cc6e in _ConvertX86p32_8RGB332 () from /usr/lib/libSDL-1.2.so.0
#12 0xb77c9820 in ?? () from /usr/lib/libSDL-1.2.so.0
#13 0xbf816f38 in ?? ()
#14 0xb77a647c in ?? () from /usr/lib/libSDL-1.2.so.0
#15 0x080c8888 in ?? ()
#16 0x080e2ba8 in ?? ()
#17 0x00000001 in ?? ()
#18 0xb77c9820 in ?? () from /usr/lib/libSDL-1.2.so.0
#19 0x00000000 in ?? ()
.
Thread 3 (process 11947):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7c685c6 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x08093cc4 in ?? ()
#3  0xb7c6431b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#4  0xb78c757e in clone () from /lib/tls/i686/cmov/libc.so.6
.
Thread 2 (process 11948):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7c685c6 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x08092f97 in ?? ()
#3  0xb7c6431b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#4  0xb78c757e in clone () from /lib/tls/i686/cmov/libc.so.6
.
Thread 1 (process 11949):
#0  0xb785da16 in ?? () from /lib/tls/i686/cmov/libc.so.6
#1  0x00000000 in ?? ()