(gdb) thread apply all bt

Thread 9 (process 21570):
#0  0xb7f9c0fb in read () from /lib/libpthread.so.0
#1  0x00000000 in ?? ()
#2  0x00000000 in ?? ()
#3  0x080e5143 in read_char (el=0x8138ab8, cp=0xbffff0bb "") at read.c:301
#4  0x080e51e4 in el_getc (el=0x8138ab8, cp=0xbffff0bb "") at read.c:347
#5  0x080e504e in read_getcmd (el=0x8138ab8, cmdnum=0xfffffe00 <Address 0xfffffe00 out of bounds>, 
    ch=0xbffff0bb "") at read.c:243
#6  0x080e5313 in el_gets (el=0x8138ab8, nread=0xbffff23c) at read.c:443
#7  0x080c78c7 in main (argc=3, argv=0xbffff424) at asterisk.c:2396

Thread 8 (process 21571):
#0  0xb7e813b1 in loser_poll () from /lib/libc.so.6
#1  0xb7e81339 in poll () from /lib/libc.so.6
#2  0xb7f95be0 in __pthread_manager () from /lib/libpthread.so.0
#3  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 7 (process 21573):
#0  0xb7e813b1 in loser_poll () from /lib/libc.so.6
#1  0xb7e81339 in poll () from /lib/libc.so.6
#2  0x080c1e5d in listener (unused=0x0) at asterisk.c:574
#3  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#4  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 6 (process 21574):
#0  0xb7f98bd3 in __pthread_sigsuspend () from /lib/libpthread.so.0
#1  0xb7f98178 in __pthread_wait_for_restart_signal () from /lib/libpthread.so.0
#2  0xb7f94ec8 in pthread_cond_wait@GLIBC_2.0 () from /lib/libpthread.so.0
#3  0x080d95a2 in ast_cond_wait (cond=0x812fc00, t=0x812bda8) at lock.h:618
#4  0x080d9485 in do_devstate_changes (data=0x0) at devicestate.c:265
#5  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#6  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 5 (process 21575):
#0  0xb7e83861 in select () from /lib/libc.so.6
#1  0xb7c2852c in ?? () from /opt/asterisk_svn/usr/lib/asterisk/modules/res_features.so
#2  0xbf3ff864 in ?? ()
#3  0xbf3ff964 in ?? ()
#4  0x00000000 in ?? ()
#5  0xb7c258bf in ast_select (nfds=0, rfds=0xbf3ff964, wfds=0x0, efds=0xbf3ff8e4, tvp=0x0) at channel.h:1154
#6  0xb7c23154 in do_parking_thread (ignore=0x0) at res_features.c:1631
#7  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#8  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 4 (process 21576):
#0  0xb7f9c0fb in read () from /lib/libpthread.so.0
#1  0xb7c13c04 in ?? () from /opt/asterisk_svn/usr/lib/asterisk/modules/res_musiconhold.so
#2  0x00000000 in ?? ()
#3  0xb7c0ed6b in monmp3thread (data=0x8146ca0) at res_musiconhold.c:495
#4  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#5  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 3 (process 21578):
#0  0xb7e813b1 in loser_poll () from /lib/libc.so.6
#1  0xb7e81339 in poll () from /lib/libc.so.6
#2  0xb7b8d1e4 in do_monitor (data=0x0) at chan_zap.c:6610
#3  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#4  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 2 (process 21580):
#0  0xb7e58986 in nanosleep () from /lib/libc.so.6
#1  0x00000000 in ?? ()
#2  0xb7e587cf in sleep () from /lib/libc.so.6
#3  0xb7a6d6a7 in scan_thread (unused=0x0) at pbx_spool.c:364
#4  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#5  0xb7e8a08a in clone () from /lib/libc.so.6

Thread 1 (process 21579):
#0  0xb7e31f89 in free () from /lib/libc.so.6
#1  0xb7b0187f in __sip_destroy (p=0x81a4738, lockowner=1) at chan_sip.c:2097
#2  0xb7b02541 in sip_destroy (p=0x81a4738) at chan_sip.c:2270
#3  0xb7afe14b in __sip_autodestruct (data=0x81a4738) at chan_sip.c:1332
#4  0x0805706e in ast_sched_runq (con=0x8142348) at sched.c:374
#5  0xb7b2c3e4 in do_monitor (data=0x0) at chan_sip.c:11362
#6  0xb7f9673e in pthread_start_thread () from /lib/libpthread.so.0
#7  0xb7e8a08a in clone () from /lib/libc.so.6
(gdb)