#0  0xb7bc3da8 in free () from /lib/tls/libc.so.6
#1  0xb7bc5c4f in malloc () from /lib/tls/libc.so.6
#2  0xb7eff87b in su_home_move () from /usr/lib/libsofia-sip-ua.so.0
#3  0xb7f00077 in su_alloc () from /usr/lib/libsofia-sip-ua.so.0
#4  0xb7e80337 in msg_header_alloc () from /usr/lib/libsofia-sip-ua.so.0
#5  0xb7e7edb5 in msg_header_dup_as () from /usr/lib/libsofia-sip-ua.so.0
#6  0xb7e84de1 in msg_header_add_dup_as () from /usr/lib/libsofia-sip-ua.so.0
#7  0xb7eec8bb in sip_add_tagis () from /usr/lib/libsofia-sip-ua.so.0
#8  0xb7ebc5e0 in nua_client_init_request () from /usr/lib/libsofia-sip-ua.so.0
#9  0xb7ebe611 in nua_client_create () from /usr/lib/libsofia-sip-ua.so.0
#10 0xb7eca215 in nua_stack_bye () from /usr/lib/libsofia-sip-ua.so.0
#11 0xb7ebe28e in nua_stack_signal () from /usr/lib/libsofia-sip-ua.so.0
#12 0xb7f09968 in su_base_port_send () from /usr/lib/libsofia-sip-ua.so.0
#13 0xb7f099fd in su_base_port_run () from /usr/lib/libsofia-sip-ua.so.0
#14 0xb7f02329 in su_root_run () from /usr/lib/libsofia-sip-ua.so.0
#15 0xb7f0a9e9 in su_pthread_port_init () from /usr/lib/libsofia-sip-ua.so.0
#16 0xb7cd10bd in start_thread () from /lib/tls/libpthread.so.0
#17 0xb7c298fe in clone () from /lib/tls/libc.so.6