(gdb) bt full
#0  0x00007fdbc0419bf9 in __memcpy_sse2_unaligned () at /lib64/libc.so.6
#1  0x00007fdbc223f1ed in ssl3_read_bytes () at /lib64/libssl.so.10
#2  0x00007fdbc223b604 in ssl3_read_internal () at /lib64/libssl.so.10
#3  0x00007fdb4714ee70 in asock_on_data_read (asock=<optimized out>, data=0x7fdb04014508, size=<optimized out>, status=0, remainder=0x7fdb3b0a3500) at ../src/pj/ssl_sock_ossl.c:1528
        buf = 0x7fdb24016e30
        data_ = 0x1bfc6ca8ffe51200
        size_ = 4000
        ssock = 0x7fdb0401c318
        nwritten = <optimized out>
#4  0x00007fdb47143350 in ioqueue_on_read_complete (key=0x1c4f7f0, op_key=0x7fdb0402a460, bytes_read=426)
    at ../src/pj/activesock.c:492
        remainder = 0
        ret = 1
        flags = <optimized out>
        asock = <optimized out>
        r = 0x7fdb0402a460
        loop = 0
        status = <optimized out>
#5  0x00007fdb4713deeb in ioqueue_dispatch_read_event (ioqueue=ioqueue@entry=0x1c53100, h=h@entry=0x1c4f7f0)
    at ../src/pj/ioqueue_common_abs.c:591
        read_op = 0x7fdb0402a460
        bytes_read = 426
        has_lock = 1
        rc = <optimized out>
        __PRETTY_FUNCTION__ = "ioqueue_dispatch_read_event"
#6  0x00007fdb4713f8ae in pj_ioqueue_poll (ioqueue=0x1c53100, timeout=timeout@entry=0x7fdb3b0a3d60)
    at ../src/pj/ioqueue_select.c:966
        rfdset = 
            {data = {5, 268435456, 0 <repeats 15 times>, 39594400, 39594528, 39594720, 39594848, 39594976, 39595104, 39595232, 39595664, 39595792, 39596624, 39596752, 39596944, 39597072, 39597200, 39597456, 39597648, 39597776, 39597904, 39598032, 39598160, 39598288, 39598416, 39598576, 39598704, 39598896, 39599248, 39599376, 39599504, 39599632, 39600512, 39600640, 39600832, 39601008, 39601136, 39601296, 39601424, 39602160, 39602288, 39602480, 39602608, 39602736, 39602864, 39603328, 39603456, 39604192, 39604320, 39605024, 39605152, 39605280, 39605408, 39605744}}
        wfdset = 
            {data = {0 <repeats 17 times>, 39608768, 39608960, 39609088, 39609264, 39609424, 39609552, 39609680, 39609872, 39610000, 39607488, 39610176, 39610304, 39610576, 39610704, 39610896, 39611024, 39611216, 39611344, 39611616, 39611744, 39611904, 39612064, 39612752, 39612880, 39613008, 39613168, 39613296, 39613488, 39613616, 39613744, 39613984, 39614112, 39614240, 39605536, 39614368, 39614496, 39614624, 39615056, 39615184, 39615344, 39615808, 39615936, 39616064, 39616496, 39616624, 39616752, 39599792, 39616880, 39617664, 39617792, 39617920}}
        xfdset = 
            {data = {0 <repeats 17 times>, 39624816, 39624944, 39625648, 39625776, 39625904, 39626032, 39626160, 39626320, 39626448, 39626640, 39626768, 39626928, 39627056, 39627184, 39627376, 39627504, 39627632, 39627824, 39627952, 39628080, 39628208, 39628400, 39628592, 39628720, 39628880, 39629040, 39629168, 39629360, 39629488, 39629616, 39629856, 39629984, 39630112, 39630240, 39630368, 39630496, 39630624, 39631088, 39631216, 39631344, 39631808, 39631936, 39632064, 39632528, 39632656, 39632784, 39617008, 39632912, 39633824, 39633952, 39634144}}
        nfds = <optimized out>
        count = 1
        i = <optimized out>
        counter = <optimized out>
        h = <optimized out>
        event = 
    {{key = 0x1c4f7f0, event_type = READABLE_EVENT}, {key = 0x0, event_type = NO_EVENT} <repeats 15 times>}
        __PRETTY_FUNCTION__ = "pj_ioqueue_poll"
---Type <return> to continue, or q <return> to quit---
#7  0x00007fdbbca0a679 in pjsip_endpt_handle_events2 (endpt=0x1c48368, max_timeout=max_timeout@entry=0x7fdb3b0a3db0, p_count=p_count@entry=0x0) at ../src/pjsip/sip_endpoint.c:741
        timeout = {sec = 0, msec = 10}
        count = 0
        net_event_count = 0
        c = <optimized out>
        __PRETTY_FUNCTION__ = "pjsip_endpt_handle_events2"
#8  0x00007fdbbca0a727 in pjsip_endpt_handle_events (endpt=<optimized out>, max_timeout=max_timeout@entry=0x7fdb3b0a3db0) at ../src/pjsip/sip_endpoint.c:769
#9  0x00007fdb46050c18 in monitor_thread_exec (endpt=<optimized out>) at res_pjsip.c:3555
        delay = {sec = 0, msec = 10}
#10 0x00007fdb47140bfa in thread_main (param=0x1c47138) at ../src/pj/os_core_unix.c:541
        rec = 0x1c47138
        result = <optimized out>
        rc = <optimized out>
#11 0x00007fdbc114160a in start_thread () at /lib64/libpthread.so.0
#12 0x00007fdbc047da7d in clone () at /lib64/libc.so.6
(gdb)