#0 0x40000402 in __kernel_vsyscall ()
#1 0x00466c00 in raise () from /lib/libc.so.6
#2 0x00468451 in abort () from /lib/libc.so.6
#3 0x0046024b in __assert_fail () from /lib/libc.so.6
#4 0x410b2d4f in nua_invite_client_ack (cr=0x960e560, tags=0x0) at nua_session.c:1092
#5 0x410b59db in nua_invite_client_deinit (cr=0x0) at nua_session.c:1229
#6 0x4109fbe4 in nua_client_request_destroy (cr=0x960e560) at nua_stack.c:1859
#7 0x4109fcd8 in nh_destroy (nua=0x8fff5b8, nh=0x6b4ba080) at nua_stack.c:736
#8 0x4109fe53 in nua_stack_destroy_handle (nua=0x8fff5b8, nh=0x6b4ba080, tags=0x50070dac) at nua_stack.c:705
#9 0x410a4885 in nua_stack_signal (nua=0x8fff5b8, msg=0x4175d308, e=0x50070d98) at nua_stack.c:455
#10 0x410ea828 in su_base_port_execute_msgs (queue=<value optimized out>) at su_base_port.c:272
#11 0x410eaeed in su_base_port_run (self=0x8ffcbb8) at su_base_port.c:325
#12 0x410fa549 in su_root_run (self=0x8fff380) at su_port.h:309
#13 0x410f069a in su_pthread_port_clone_main (varg=0x4135b144) at su_pthread_port.c:321
#14 0x005b12db in start_thread () from /lib/libpthread.so.0
#15 0x0050b12e in clone () from /lib/libc.so.6