#0  0x0000000000499d59 in ast_sched_del (con=0x6cdaa0, id=1816) at sched.c:286
286                     CRASH;
(gdb) bt
#0  0x0000000000499d59 in ast_sched_del (con=0x6cdaa0, id=1816) at sched.c:286
#1  0x0000002a9b15ffa4 in iax2_destroy_helper (pvt=0x742e40) at chan_iax2.c:1670
#2  0x0000002a9b160242 in iax2_destroy (callno=22) at chan_iax2.c:1725
#3  0x0000002a9b1792f6 in socket_process (thread=0x6d19d0) at chan_iax2.c:6909
#4  0x0000002a9b17ef21 in iax2_process_thread (data=0x6d19d0) at chan_iax2.c:7604
#5  0x00000000004a796e in dummy_start (data=0x6cfed0) at utils.c:544
#6  0x0000003d12d057fb in start_thread () from /lib64/tls/libpthread.so.0
#7  0x0000003d113ba703 in thread_start () from /lib64/tls/libc.so.6
#8  0x0000000000000000 in ?? ()