(gdb) info thread
  5 Thread -151057488 (LWP 12853)  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
  4 Thread -161559632 (LWP 12854)  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
  3 Thread -172049488 (LWP 12855)  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
  2 Thread -182539344 (LWP 12856)  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
  1 Thread -151056256 (LWP 12851)  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb) thread apply all bt

Thread 5 (Thread -151057488 (LWP 12853)):
#0  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x00799057 in poll () from /lib/tls/libc.so.6
#2  0x0809fecd in listener (unused=0x0) at asterisk.c:337
#3  0x0084798c in start_thread () from /lib/tls/libpthread.so.0
#4  0x007a27da in clone () from /lib/tls/libc.so.6

Thread 4 (Thread -161559632 (LWP 12854)):
#0  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0084d3b8 in accept () from /lib/tls/libpthread.so.0
#2  0x0809e91c in accept_thread (ignore=0x0) at manager.c:1258
#3  0x0084798c in start_thread () from /lib/tls/libpthread.so.0
#4  0x007a27da in clone () from /lib/tls/libc.so.6

Thread 3 (Thread -172049488 (LWP 12855)):
#0  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0084d1ab in __read_nocancel () from /lib/tls/libpthread.so.0
#2  0x00cf467c in monmp3thread (data=0x8980340) at res_musiconhold.c:443
#3  0x0084798c in start_thread () from /lib/tls/libpthread.so.0
#4  0x007a27da in clone () from /lib/tls/libc.so.6

Thread 2 (Thread -182539344 (LWP 12856)):
#0  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0079b491 in ___newselect_nocancel () from /lib/tls/libc.so.6
#2  0x0097618a in ast_select (nfds=0, rfds=0xf51ea960, wfds=0x0, efds=0xf51ea8e0, tvp=0x0)
    at channel.h:824
#3  0x00974d27 in do_parking_thread (ignore=0x0) at res_features.c:714
#4  0x0084798c in start_thread () from /lib/tls/libpthread.so.0
#5  0x007a27da in clone () from /lib/tls/libc.so.6

Thread 1 (Thread -151056256 (LWP 12851)):
#0  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0084ceee in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0
#2  0x00849e09 in _L_mutex_lock_156 () from /lib/tls/libpthread.so.0
#3  0x00000000 in ?? ()
#0  0x006ce7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb)