(gdb) bt
#0  0x00645402 in __kernel_vsyscall ()
#1  0x00151ba0 in raise () from /lib/libc.so.6
#2  0x001534b1 in abort () from /lib/libc.so.6
#3  0x00187dfb in __libc_message () from /lib/libc.so.6
#4  0x0018faa6 in _int_free () from /lib/libc.so.6
#5  0x00192fc0 in free () from /lib/libc.so.6
#6  0x08097767 in ast_variables_destroy (v=0x1) at config.c:387
#7  0x08097c93 in ast_category_destroy (cat=0x960caf0) at config.c:558
#8  0x080985a9 in ast_config_destroy (cfg=0x95fcf48) at config.c:837
#9  0x00d92082 in ?? ()
#10 0x095fcf48 in ?? ()
#11 0x0960b190 in ?? ()
#12 0x00000000 in ?? ()
(gdb) bt full
#0  0x00645402 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00151ba0 in raise () from /lib/libc.so.6
No symbol table info available.
#2  0x001534b1 in abort () from /lib/libc.so.6
No symbol table info available.
#3  0x00187dfb in __libc_message () from /lib/libc.so.6
No symbol table info available.
#4  0x0018faa6 in _int_free () from /lib/libc.so.6
No symbol table info available.
#5  0x00192fc0 in free () from /lib/libc.so.6
No symbol table info available.
#6  0x08097767 in ast_variables_destroy (v=0x1) at config.c:387
        vn = (struct ast_variable *) 0xd9a404
#7  0x08097c93 in ast_category_destroy (cat=0x960caf0) at config.c:558
No locals.
#8  0x080985a9 in ast_config_destroy (cfg=0x95fcf48) at config.c:837
        cat = (struct ast_category *) 0x960cb58
        catn = (struct ast_category *) 0x960caf0
#9  0x00d92082 in ?? ()
No symbol table info available.
#10 0x095fcf48 in ?? ()
No symbol table info available.
#11 0x0960b190 in ?? ()
No symbol table info available.
#12 0x00000000 in ?? ()
No symbol table info available.