. Thread 2 (process 7471): #0 0xb7f25430 in __kernel_vsyscall () #1 0xb78137b1 in select () from /lib/tls/i686/cmov/libc.so.6 #2 0xb7b6af3c in ?? () from /usr/lib/libtcl8.5.so.0 #3 0xb7a784ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #4 0xb781b49e in clone () from /lib/tls/i686/cmov/libc.so.6 . Thread 1 (process 7470): #0 0xb77b0896 in memcpy () from /lib/tls/i686/cmov/libc.so.6 #1 0x09970950 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?)