. Thread 4 (process 30688): #0 0xb7f0d424 in __kernel_vsyscall () #1 0xb7d1e065 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2 0x0804f9e4 in ?? () #3 0x0804f260 in ?? () #4 0xb7d1a4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #5 0xb7b2964e in clone () from /lib/tls/i686/cmov/libc.so.6 . Thread 3 (process 30687): #0 0xb7f0d424 in __kernel_vsyscall () #1 0xb7d1e065 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2 0x0804f9e4 in ?? () #3 0x0804eae2 in ?? () #4 0x0804f595 in ?? () #5 0x080497df in ?? () #6 0xb7a5e685 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6 #7 0x080494e1 in ?? () . Thread 2 (process 30692): #0 0xb7f0d424 in __kernel_vsyscall () #1 0xb7d20cf9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb7d1c104 in _L_lock_89 () from /lib/tls/i686/cmov/libpthread.so.0 #3 0xb7d1ba32 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0 #4 0x0804f830 in ?? () #5 0xb7d1a4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #6 0xb7b2964e in clone () from /lib/tls/i686/cmov/libc.so.6 . Thread 1 (process 30691): #0 0xb7ac0b11 in memcpy () from /lib/tls/i686/cmov/libc.so.6 #1 0x0804beba in ?? () #2 0x0804f840 in ?? () #3 0xb7d1a4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #4 0xb7b2964e in clone () from /lib/tls/i686/cmov/libc.so.6