Program terminated with signal 11, Segmentation fault.
#0  0x080a15b2 in ast_frdup (f=0x8a3ac94) at frame.c:458
458                     AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) {
(gdb) bt full
#0  0x080a15b2 in ast_frdup (f=0x8a3ac94) at frame.c:458
        __list_next = (struct ast_frame *) 0x3f1e858
        __list_prev = (struct ast_frame *) 0x0
        __new_prev = (struct ast_frame *) 0x46e8e23b
        out = (struct ast_frame *) 0x46e8e23b
        len = 298
        srclen = 9
        buf = (void *) 0x0
        frames = (struct ast_frame_cache *) 0xb7a8ab20
        __PRETTY_FUNCTION__ = "ast_frdup"
#1  0x0807cac8 in ast_queue_frame (chan=0x8b33970, fin=0x8a3ac94) at channel.c:903
        f = (struct ast_frame *) 0x5e8610
        cur = (struct ast_frame *) 0x8b34780
        blah = 1
        qlen = 0
        __PRETTY_FUNCTION__ = "ast_queue_frame"
#2  0x005e52e6 in local_queue_frame (p=0x8b308f8, isoutbound=1, f=0x8a3ac94, us=0x8b345b0) at chan_local.c:194
        other = (struct ast_channel *) 0x8b33970
        __PRETTY_FUNCTION__ = "local_queue_frame"
#3  0x005e571d in local_write (ast=0x8b345b0, f=0x8a3ac94) at chan_local.c:292
        p = (struct local_pvt *) 0x8b308f8
        res = -1
        isoutbound = 1
        __PRETTY_FUNCTION__ = "local_write"
#4  0x080835e3 in ast_write (chan=0x8b345b0, fr=0x8a3ce7c) at channel.c:2945
        res = -1
        f = (struct ast_frame *) 0x8a3ac94
        __PRETTY_FUNCTION__ = "ast_write"
#5  0x003cc0b6 in moh_files_generator (chan=0x8b345b0, data=0x8b31148, len=160, samples=160) at res_musiconhold.c:293
        state = (struct moh_files_state *) 0x8b31148
        f = (struct ast_frame *) 0x8a3ce7c
        res = 0
        __PRETTY_FUNCTION__ = "moh_files_generator"
#6  0x080803f9 in ast_read_generator_actions (chan=0x8b345b0, f=0x89d19a8) at channel.c:2164
        tmp = (void *) 0x8b31148
        res = 5092841
        __PRETTY_FUNCTION__ = "ast_read_generator_actions"
#7  0x08081e68 in __ast_read (chan=0x8b345b0, dropaudio=0) at channel.c:2517
        f = (struct ast_frame *) 0x89d19a8
        blah = 16
        prestate = 6
        __PRETTY_FUNCTION__ = "__ast_read"
#8  0x0808201e in ast_read (chan=0x8b345b0) at channel.c:2553
No locals.
#9  0x0807d398 in ast_safe_sleep_conditional (chan=0x8b345b0, ms=7110, cond=0, data=0x0) at channel.c:1160
        f = (struct ast_frame *) 0x89c5ba8
#10 0x0807d401 in ast_safe_sleep (chan=0x8b345b0, ms=10000) at channel.c:1172
No locals.
#11 0x003cd1c5 in moh0_exec (chan=0x8b345b0, data=0x3f20f48) at res_musiconhold.c:585
        __PRETTY_FUNCTION__ = "moh0_exec"
#12 0x080b9674 in pbx_exec (c=0x8b345b0, app=0x888b5c8, data=0x3f20f48) at pbx.c:532
        res = 0
        saved_c_appl = 0x0
---Type <return> to continue, or q <return> to quit---
        saved_c_data = 0x0
#13 0x080bcb40 in pbx_extension_helper (c=0x8b345b0, con=0x0, context=0x8b34730 "agentq", exten=0x8b34780 "Agent-02", priority=14, label=0x0,
    callerid=0x89af5e8 "", action=E_SPAWN) at pbx.c:1833
        e = (struct ast_exten *) 0x88fd9d0
        app = (struct ast_app *) 0x888b5c8
        res = 66206608
        q = {incstack = {0x0 <repeats 128 times>}, stacklen = 0, status = 5, swo = 0x0, data = 0x0, foundcontext = 0x8b34730 "agentq"}
        passdata = '\0' <repeats 8191 times>
        matching_action = 0
        __PRETTY_FUNCTION__ = "pbx_extension_helper"
#14 0x080bdc0f in ast_spawn_extension (c=0x8b345b0, context=0x8b34730 "agentq", exten=0x8b34780 "Agent-02", priority=14, callerid=0x89af5e8 "")
    at pbx.c:2288
No locals.
#15 0x080be0df in __ast_pbx_run (c=0x8b345b0) at pbx.c:2388
        dst_exten = "\220\002\000\000d\201ò\000\233- ·\000\000 ·\b2ò\003qÀG\000\0302ò\003d\201ò\000\233- ·W2ò\003X3ò\003ãIñ\000\220- ·/\000\000\000\0000ð·§2ò\0030\000\000\000\234~S\000\221²X\000P\001U\000\221rG\000\027e\000\000\021\000\000\000(\001U\000Zap\000\000\000\000\000 \001U\000\001\000\000\000\2302ò\003´êË\000\000\000\000\000 \001\000\000 \000\000\000\234~S\000a·G\000¨o£\b\224- ·h\000\000\000\000\000\000\000\030\017\235\bÈu\025\b\002\000\000\000¸2ò\003\020\000\000\000\220\236G\000\f\000\000\000a·G\000´êË\000ôïT\000 \001U\000"...
        pos = 0
        digit = 0
        found = 1
        res = 0
        autoloopflag = 0
        error = 0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#16 0x080bee7b in pbx_thread (data=0x8b345b0) at pbx.c:2603
        c = (struct ast_channel *) 0x8b345b0
#17 0x080fa09c in dummy_start (data=0x89a6578) at utils.c:775
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {5865460, 0, 66206608, 66204616, -1319133064, -1163775116},
      __mask_was_saved = 0}}, __pad = {0x3f23480, 0x0, 0x0, 0x0}}
        __cancel_routine = (void (*)(void *)) 0x8068b51 <ast_unregister_thread>
        __cancel_arg = (void *) 0x3f23b90
        not_first_call = 0
        ret = (void *) 0x52156e
        a = {start_routine = 0x80bee64 <pbx_thread>, data = 0x8b345b0,
  name = 0x89d0eb8 "pbx_thread", ' ' <repeats 11 times>, "started at [ 2627] pbx.c ast_pbx_start()"}
#18 0x005892db in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#19 0x004e312e in clone () from /lib/libc.so.6
No symbol table info available.