#0  0x080880e9 in ast_channel_datastore_free (datastore=0x91c69e8) at channel.c:1373
1373            if (datastore->info->destroy != NULL && datastore->data != NULL) {
(gdb) bt
#0  0x080880e9 in ast_channel_datastore_free (datastore=0x91c69e8) at channel.c:1373
#1  0x08087bd3 in ast_channel_free (chan=0x91bff70) at channel.c:1325
#2  0x08088a54 in ast_hangup (chan=0x91bff70) at channel.c:1581
#3  0x080d9975 in __ast_pbx_run (c=0x91bff70) at pbx.c:2563
#4  0x080d9baf in pbx_thread (data=0x91bff70) at pbx.c:2623
#5  0x0811af62 in dummy_start (data=0x91bbbe0) at utils.c:861
#6  0x008103cc in start_thread () from /lib/tls/libpthread.so.0
#7  0x006e91ae in clone () from /lib/tls/libc.so.6
(gdb) bt full
#0  0x080880e9 in ast_channel_datastore_free (datastore=0x91c69e8) at channel.c:1373
        res = 0
#1  0x08087bd3 in ast_channel_free (chan=0x91bff70) at channel.c:1325
        fd = 18
        vardata = (struct ast_var_t *) 0x1
        f = (struct ast_frame *) 0x0
        headp = (struct varshead *) 0x91c0374
        datastore = (struct ast_datastore *) 0x91c69e8
        name = "IAX2/1000-3\000\001\000\000\000èÿ\033\t\000\000\000\00081U\230Iª\021\bì\022\034\t(\b\000\00081U\230\223E\b\b\000\000\000\000à\n\034\tx1U\230ÕD\b\bèÿ\033\tBè\024\b\000\000\000\000\000\000\000"
        __PRETTY_FUNCTION__ = "ast_channel_free"
#2  0x08088a54 in ast_hangup (chan=0x91bff70) at channel.c:1581
        res = 0
        cdr = (struct ast_cdr *) 0x91df3b0
        __PRETTY_FUNCTION__ = "ast_hangup"
#3  0x080d9975 in __ast_pbx_run (c=0x91bff70) at pbx.c:2563
        found = 1
        res = -1
        autoloopflag = 0
        error = 1
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#4  0x080d9baf in pbx_thread (data=0x91bff70) at pbx.c:2623
        c = (struct ast_channel *) 0x91bff70
#5  0x0811af62 in dummy_start (data=0x91bbbe0) at utils.c:861
        _buffer = {__routine = 0x806c0b0 <ast_unregister_thread>, __arg = 0x98553ba0, __canceltype = 0, __prev = 0x0}
        ret = (void *) 0x0
        a = {start_routine = 0x80d9b98 <pbx_thread>, data = 0x91bff70, name = 0x91c09e8 "pbx_thread", ' ' <repeats 11 times>, "started at [ 2647] pbx.c ast_pbx_start()"}
        lock_info = (struct thr_lock_info *) 0x91c0ae0
        mutex_attr = {__mutexkind = 1}
#6  0x008103cc in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
#7  0x006e91ae in clone () from /lib/tls/libc.so.6
No symbol table info available.
(gdb) p datastore
$1 = (struct ast_datastore *) 0x91c69e8
(gdb) p datastore->info
$2 = (const struct ast_datastore_info *) 0x348944
(gdb) p *datastore
$3 = {uid = 0x0, data = 0x984d5850, info = 0x348944, inheritance = 0, entry = {next = 0x0}}
(gdb) p *datastore->info
Cannot access memory at address 0x348944