#0  0x0000000000459d85 in INTERNAL_OBJ (user_data=0x626f273d65707974) at astobj2.c:144
#1  0x0000000000459e22 in is_ao2_object (user_data=0x626f273d65707974) at astobj2.c:169
#2  0x000000000045b4a1 in internal_ao2_traverse (self=0x626f273d65707974, flags=OBJ_NOLOCK, cb_fn=0x586b89, arg=0x7f9141830004, data=0x0, type=AO2_CALLBACK_DEFAULT, tag=0x0, file=0x0, line=0, func=0x0)
    at astobj2_container.c:271
#3  0x000000000045ba13 in __ao2_callback (c=0x626f273d65707974, flags=OBJ_NOLOCK, cb_fn=0x586b89 <rtp_payload_type_find_format>, arg=0x7f9141830004) at astobj2_container.c:452
#4  0x0000000000586c75 in ast_rtp_codecs_payload_code (codecs=0x7f90fac676c8, asterisk_format=1, format=0x7f9141830004, code=0) at rtp_engine.c:855
#5  0x00007f9170e06cc4 in bridge_p2p_rtp_write (instance=0x7f90fb3adc58, rtcp=<value optimized out>) at res_rtp_asterisk.c:4142
#6  ast_rtp_read (instance=0x7f90fb3adc58, rtcp=<value optimized out>) at res_rtp_asterisk.c:4339
#7  0x00000000005858c2 in ast_rtp_instance_read (instance=0x7f90fb3adc58, rtcp=0) at rtp_engine.c:436
#8  0x00007f9185511da8 in sip_rtp_read (ast=0x7f90fb6e24a8, p=0x7f90fbe49af8, faxdetect=0x7f91418306f4) at chan_sip.c:8354
#9  0x00007f9185512557 in sip_read (ast=0x7f90fb6e24a8) at chan_sip.c:8451
#10 0x00000000004b0d2d in __ast_read (chan=0x7f90fb6e24a8, dropaudio=0) at channel.c:3954
#11 0x00000000004b2aff in ast_read (chan=0x7f90fb6e24a8) at channel.c:4305
#12 0x0000000000480e92 in bridge_handle_trip (bridge_channel=0x7f90fb3d5df8) at bridge_channel.c:2247
#13 0x000000000048138b in bridge_channel_wait (bridge_channel=0x7f90fb3d5df8) at bridge_channel.c:2417
#14 0x0000000000481950 in bridge_channel_internal_join (bridge_channel=0x7f90fb3d5df8) at bridge_channel.c:2546
#15 0x0000000000469d61 in bridge_channel_ind_thread (data=0x7f90fb3d5df8) at bridge.c:1638
#16 0x00000000005e665f in dummy_start (data=0x7f90f99be290) at utils.c:1224
#17 0x00007f9205e0d9d1 in start_thread () from /lib64/libpthread.so.0
#18 0x00007f9207a208fd in clone () from /lib64/libc.so.6