(gdb) bt full
#0  0x0fd40aa0 in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x0fd45930 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x0fd3899c in ?? () from /lib/libc.so.6
No symbol table info available.
#3  0x0fd38a54 in __assert_fail () from /lib/libc.so.6
No symbol table info available.
#4  0x10028c14 in lttng_ustconsumer_request_metadata (ctx=0x1004e4a8, channel=0x32f05d10, timer=0) at ust-consumer.c:1907
        request = {session_id = 0, session_id_per_pid = 7, bits_per_long = 32, uid = 0, key = 9}
        msg = {cmd_type = 10, u = {channel = {channel_key = 2, session_id = 17343, pathname = '\000' <repeats 4095 times>, uid = 0, gid = 0, 
              relayd_id = 0, nb_init_streams = 0, 
              name = '\000' <repeats 220 times>, "4\257\325\300\000\000\000\000\000\000'\020\000\000\000|\000\000\000r\000\000\000w\000\000\000|\017\340p\254\017\335\307\330", output = LTTNG_EVENT_SPLICE, type = 0, tracefile_size = 883938720, tracefile_count = 671097922, monitor = 2}, stream = {
              stream_key = 2, channel_key = 17343, cpu = 0, no_monitor = 0}, relayd_sock = {net_index = 2, type = LTTNG_STREAM_CONTROL, sock = {
                sock = {fd = 17343, proto = LTTCOMM_SOCK_UDP, sockaddr = {type = LTTCOMM_INET, addr = {sin = {sin_family = 0, sin_port = 0, 
                        sin_addr = {s_addr = 0}, sin_zero = "\000\000\000\000\000\000\000"}, sin6 = {sin6_family = 0, sin6_port = 0, 
                        sin6_flowinfo = 0, sin6_addr = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, 
                            __u6_addr32 = {0, 0, 0, 0}}}, sin6_scope_id = 0}}}, ops = 0x0}, major = 0, minor = 0}, session_id = 0}, 
            destroy_relayd = {net_seq_idx = 2}, data_pending = {session_id = 2}, ask_channel = {subbuf_size = 2, num_subbuf = 17343, overwrite = 0, 
              switch_timer_interval = 0, read_timer_interval = 0, output = 0, type = 0, session_id = 0, pathname = '\000' <repeats 4095 times>, 
              name = '\000' <repeats 212 times>, "4\257\325\300\000\000\000\000\000\000'\020\000\000\000|\000\000\000r\000\000\000w\000\000\000|\017\340p\254\017\335\307\330\000\000\000\000\000\000\000", uid = 0, gid = 883938720, relayd_id = 2882343627403558914, key = 875560960, 
              uuid = "\020\be\234\300\000\000\000\020\003\302\344\064\257\325\240", chan_id = 805441560, tracefile_size = 36028797902902688, 
              tracefile_count = 883938752, session_id_per_pid = 1144676060751724547, monitor = 603989064}, get_channel = {key = 2}, 
            destroy_channel = {key = 2}, push_metadata = {key = 2, target_offset = 17343, len = 0}, close_metadata = {key = 2}, setup_metadata = {
              key = 2}, flush_channel = {key = 2}, snapshot_channel = {
              pathname = "\000\000\000\000\000\000\000\002\000\000\000\000\000\000C\277", '\000' <repeats 4079 times>, use_relayd = 0, metadata = 0, 
              relayd_id = 0, key = 0, max_stream_size = 0}}}
        ret_code = LTTNG_OK
        len = 0
        key = 2
        offset = 17343
        ret = 4468
        __PRETTY_FUNCTION__ = "lttng_ustconsumer_request_metadata"
        __func__ = "lttng_ustconsumer_request_metadata"
#5  0x10025724 in snapshot_metadata (key=9, path=0x324246e0 "/trace//snapshot-1-20130812-134230-4/ust//uid/1000/32-bit", 
    relayd_id=18446744073709551615, ctx=0x1004e4a8) at ust-consumer.c:781
        ret = 0
        metadata_channel = 0x32f05d10
        metadata_stream = 0x32424600
        __PRETTY_FUNCTION__ = "snapshot_metadata"
        __func__ = "snapshot_metadata"
#6  0x10027114 in lttng_ustconsumer_recv_cmd (ctx=0x1004e4a8, sock=19, consumer_sockpoll=0x32425914) at ust-consumer.c:1399
        ret = 4468
        ret_code = LTTNG_OK
        msg = {cmd_type = 14, u = {channel = {channel_key = 3419483779686018863, session_id = 8317692697400340340, 
              pathname = "-1-20130812-134230-4/ust//uid/1000/32-bit", '\000' <repeats 4046 times>, "\001\377\377\377\377\377\377\377\377", uid = 0, 
              gid = 9, relayd_id = 0, nb_init_streams = 0, name = '\000' <repeats 255 times>, output = LTTNG_EVENT_SPLICE, type = 0, 
              tracefile_size = 0, tracefile_count = 0, monitor = 0}, stream = {stream_key = 3419483779686018863, channel_key = 8317692697400340340, 
              cpu = 758197554, no_monitor = 808530736}, relayd_sock = {net_index = 3419483779686018863, type = (unknown: 1936613744), sock = {
                sock = {fd = 1936224116, proto = (unknown: 758197554), sockaddr = {type = (unknown: 808530736), addr = {sin = {sin_family = 14385, 
                        sin_port = 12845, sin_addr = {s_addr = 825439282}, sin_zero = "30-4/ust"}, sin6 = {sin6_family = 14385, sin6_port = 12845, 
                        sin6_flowinfo = 825439282, sin6_addr = {__in6_u = {__u6_addr8 = "30-4/ust//uid/10", __u6_addr16 = {13104, 11572, 12149, 
                              29556, 12079, 30057, 25647, 12592}, __u6_addr32 = {858795316, 796226420, 791639401, 1680814384}}}, 
                        sin6_scope_id = 808464179}}}, ops = 0x322d6269}, major = 1946157056, minor = 0}, session_id = 0}, destroy_relayd = {
              net_seq_idx = 3419483779686018863}, data_pending = {session_id = 3419483779686018863}, ask_channel = {
              subbuf_size = 3419483779686018863, num_subbuf = 8317692697400340340, overwrite = 758197554, switch_timer_interval = 808530736, 
              read_timer_interval = 942748205, output = 825439282, type = 858795316, session_id = 3419766434902799721, 
              pathname = "d/1000/32-bit", '\000' <repeats 4046 times>, "\001\377\377\377\377\377\377\377\377\000\000\000\000\000\000\000\t", '\000' <repeats 19 times>, name = '\000' <repeats 255 times>, uid = 0, gid = 0, relayd_id = 0, key = 0, uuid = '\000' <repeats 15 times>, chan_id = 0, 
              tracefile_size = 0, tracefile_count = 0, session_id_per_pid = 0, monitor = 0}, get_channel = {key = 3419483779686018863}, 
            destroy_channel = {key = 3419483779686018863}, push_metadata = {key = 3419483779686018863, target_offset = 8317692697400340340, 
              len = 3256433699145724720}, close_metadata = {key = 3419483779686018863}, setup_metadata = {key = 3419483779686018863}, 
            flush_channel = {key = 3419483779686018863}, snapshot_channel = {
              pathname = "/trace//snapshot-1-20130812-134230-4/ust//uid/1000/32-bit", '\000' <repeats 4038 times>, use_relayd = 0, metadata = 1, 
              relayd_id = 18446744073709551615, key = 9, max_stream_size = 0}}}
        channel = 0x0
        __func__ = "lttng_ustconsumer_recv_cmd"
        __PRETTY_FUNCTION__ = "lttng_ustconsumer_recv_cmd"
#7  0x1000861c in lttng_consumer_recv_cmd (ctx=0x1004e4a8, sock=19, consumer_sockpoll=0x32425914) at consumer.c:1773
        __PRETTY_FUNCTION__ = "lttng_consumer_recv_cmd"
#8  0x1000cd34 in consumer_thread_sessiond_poll (data=0x1004e4a8) at consumer.c:2948
        sock = 19
        client_socket = -1
        ret = 1
        consumer_sockpoll = {{fd = 5, events = 3, revents = 0}, {fd = 19, events = 3, revents = 1}}
        ctx = 0x1004e4a8
        __func__ = "consumer_thread_sessiond_poll"
#9  0x0fe9a84c in ?? () from /lib/libpthread.so.0
No symbol table info available.
#10 0x0fdf1684 in clone () from /lib/libc.so.6
No symbol table info available.
(gdb)