(gdb) info threads
  22 LWP 100059  0x283894f7 in pthread_testcancel () from /lib/libpthread.so.2
* 21 Thread 0x814e000 (runnable)  0x08084f3f in __ast_cli_register (
    e=0x8129668, ed=0x8130a5c) at cli.c:1664
  20 Thread 0x814e200 (LWP 100056)  0x283894f7 in pthread_testcancel ()
   from /lib/libpthread.so.2
  19 Thread 0x814e600 (runnable)  0x28437134 in _ctx_start ()
   from /lib/libc.so.6
  18 Thread 0x814ec00 (runnable)  0x28406de3 in poll () from /lib/libc.so.6
  17 Thread 0x814ee00 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  16 Thread 0x8166000 (runnable)  0x28437134 in _ctx_start ()
   from /lib/libc.so.6
  15 Thread 0x8166400 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  14 Thread 0x8166800 (runnable)  0x28406de3 in poll () from /lib/libc.so.6
  13 Thread 0x8182000 (runnable)  0x28406de3 in poll () from /lib/libc.so.6
  12 Thread 0x8182600 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  11 Thread 0x8182800 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  10 Thread 0x8182a00 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  9 Thread 0x8182c00 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
---Type <return> to continue, or q <return> to quit---
   from /lib/libpthread.so.2
  8 Thread 0x8182e00 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  7 Thread 0x86c9000 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  6 Thread 0x86c9200 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  5 Thread 0x86c9400 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  4 Thread 0x86c9600 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  3 Thread 0x86c9800 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  2 Thread 0x86c9a00 (sleeping)  0x28381f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  1 Thread 0x86c9c00 (runnable)  timing_read (id=0x8652980, fd=-1, events=0, 
    cbdata=0x286766c7) at chan_iax2.c:5938