(gdb) bt full
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 3256155514150741089, 7089898611654747703, 3255383588231721011, 3473174920181063792, 3544397096689872944, 2320255627533103648, 2314885530818453536, 
            2314885530818453536, 7091318037929795616, 3257288213055174703, 7955377262162766188, 3615882721364815733, 3991938637669543476, 3472331810386557233, 7005684809359371568}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f7198f1242a in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x2020202020202020, sa_sigaction = 0x2020202020202020}, sa_mask = {__val = {2314885530818453536, 6733551554292031520, 
              7076615601550407434, 7365405400577893734, 3472328515354912102, 2337500343188860976, 3472328296227680304, 3467824696768081952, 2314885530818453536, 2314885530818453536, 
              2314885530818453536, 6732726843261788192, 7378697629483820554, 3472328296331896422, 7378697629483806000, 140125359578064}}, sa_flags = 80, sa_restorer = 0x7f717a481bd0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f7198f4ec00 in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f7199043fd0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
        ap = {{gp_offset = 40, fp_offset = 32625, overflow_arg_area = 0x7f717a481be0, reg_save_area = 0x7f717a481b70}}
        fd = 2
        on_2 = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#3  0x00007f7198f54fc6 in malloc_printerr (action=3, str=0x7f7199040b1e "corrupted size vs. prev_size", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5049
        buf = "00007f718851d4e0"
        cp = <optimized out>
        ar_ptr = <optimized out>
        ptr = <optimized out>
        str = 0x7f7199040b1e "corrupted size vs. prev_size"
        action = 3
#4  0x00007f7198f560c1 in _int_free (av=0x7f7188000020, p=0x7f7188519640, have_lock=0) at malloc.c:4052
        size = 16032
        fb = <optimized out>
        nextchunk = 0x7f718851d4e0
        nextsize = 80
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = 0x0
        locked = <optimized out>
        __func__ = "_int_free"
#5  0x00007f7191075dd6 in tport_deliver (self=self@entry=0x7f7188004220, msg=0x7f7188105d00, next=next@entry=0x0, sc=<optimized out>, now=...) at tport.c:3031
        via = 0x7f71911126ca "recv"
        ref = <optimized out>
        error = 0
        d = 0x7f7188003e58
        ipaddr = "172.31.6.131\000\177\000\000\020G\200\241\nV\000\000\001\000\000\000\020\000\000\001H]\020\210q\177\000\000@]\020\210q\177\000\000("
        __PRETTY_FUNCTION__ = "tport_deliver"
        __func__ = "tport_deliver"
#6  0x00007f71910762e2 in tport_parse (self=self@entry=0x7f7188004220, complete=1, now=...) at tport.c:2965
        msg = <optimized out>
        next = 0x0
        n = <optimized out>
        streaming = 0
        stall = 0
---Type <return> to continue, or q <return> to quit---
        __func__ = "tport_parse"
#7  0x00007f7191076cba in tport_recv_event (self=self@entry=0x7f7188004220) at tport.c:2907
        __func__ = "tport_recv_event"
#8  0x00007f719107949b in tport_base_wakeup (self=0x7f7188004220, events=1) at tport.c:2808
        error = 0
#9  0x00007f719105e7bb in su_epoll_port_wait_events (self=0x7f71880008e0, tout=<optimized out>) at su_epoll_port.c:510
        ser = 0x7f7188000ea0
        magic = <optimized out>
        j = <optimized out>
        n = 1
        events = 0
        index = <optimized out>
        version = 5
        ev = {{events = 1, data = {ptr = 0x2, fd = 2, u32 = 2, u64 = 2}}, {events = 32625, data = {ptr = 0x7f7188000930, fd = -2013263568, u32 = 2281703728, u64 = 140125589735728}}, {
            events = 2051546784, data = {ptr = 0x57ab400007f71, fd = 32625, u32 = 32625, u64 = 1542288396287857}}, {events = 0, data = {ptr = 0xe1cb3a97, fd = -506774889, 
              u32 = 3788192407, u64 = 3788192407}}}
        __PRETTY_FUNCTION__ = "su_epoll_port_wait_events"
#10 0x00007f719105dd52 in su_base_port_run (self=0x7f71880008e0) at su_base_port.c:349
        tout = 217
        tout2 = 0
        __PRETTY_FUNCTION__ = "su_base_port_run"
#11 0x00007f7191062905 in su_pthread_port_clone_main (varg=0x7f7190e15800) at su_pthread_port.c:343
        arg = 0x0
        task = {{sut_port = 0x7f71880008e0, sut_root = 0x7f7188001150}}
        zap = 1
#12 0x00007f71999544a4 in start_thread (arg=0x7f717a482700) at pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f717a482700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140125359580928, 7411738368383383246, 140125738719006, 140125738719007, 140125351190528, 3, -7477879362551810354, 
                -7477950188350998834}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#13 0x00007f7198fc6d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
No locals.
(gdb) 
(gdb) bt full
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 3256155514150741089, 7089898611654747703, 3255383588231721011, 3473174920181063792, 3544397096689872944, 2320255627533103648, 2314885530818453536, 
            2314885530818453536, 7091318037929795616, 3257288213055174703, 7955377262162766188, 3615882721364815733, 3991938637669543476, 3472331810386557233, 7005684809359371568}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f7198f1242a in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x2020202020202020, sa_sigaction = 0x2020202020202020}, sa_mask = {__val = {2314885530818453536, 6733551554292031520, 
              7076615601550407434, 7365405400577893734, 3472328515354912102, 2337500343188860976, 3472328296227680304, 3467824696768081952, 2314885530818453536, 2314885530818453536, 
              2314885530818453536, 6732726843261788192, 7378697629483820554, 3472328296331896422, 7378697629483806000, 140125359578064}}, sa_flags = 80, sa_restorer = 0x7f717a481bd0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f7198f4ec00 in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f7199043fd0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
        ap = {{gp_offset = 40, fp_offset = 32625, overflow_arg_area = 0x7f717a481be0, reg_save_area = 0x7f717a481b70}}
        fd = 2
        on_2 = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#3  0x00007f7198f54fc6 in malloc_printerr (action=3, str=0x7f7199040b1e "corrupted size vs. prev_size", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5049
        buf = "00007f718851d4e0"
        cp = <optimized out>
        ar_ptr = <optimized out>
        ptr = <optimized out>
        str = 0x7f7199040b1e "corrupted size vs. prev_size"
        action = 3
#4  0x00007f7198f560c1 in _int_free (av=0x7f7188000020, p=0x7f7188519640, have_lock=0) at malloc.c:4052
        size = 16032
        fb = <optimized out>
        nextchunk = 0x7f718851d4e0
        nextsize = 80
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = 0x0
        locked = <optimized out>
        __func__ = "_int_free"
#5  0x00007f7191075dd6 in tport_deliver (self=self@entry=0x7f7188004220, msg=0x7f7188105d00, next=next@entry=0x0, sc=<optimized out>, now=...) at tport.c:3031
        via = 0x7f71911126ca "recv"
        ref = <optimized out>
        error = 0
        d = 0x7f7188003e58
        ipaddr = "172.31.6.131\000\177\000\000\020G\200\241\nV\000\000\001\000\000\000\020\000\000\001H]\020\210q\177\000\000@]\020\210q\177\000\000("
        __PRETTY_FUNCTION__ = "tport_deliver"
        __func__ = "tport_deliver"
#6  0x00007f71910762e2 in tport_parse (self=self@entry=0x7f7188004220, complete=1, now=...) at tport.c:2965
        msg = <optimized out>
        next = 0x0
        n = <optimized out>
        streaming = 0
        stall = 0
---Type <return> to continue, or q <return> to quit---
        __func__ = "tport_parse"
#7  0x00007f7191076cba in tport_recv_event (self=self@entry=0x7f7188004220) at tport.c:2907
        __func__ = "tport_recv_event"
#8  0x00007f719107949b in tport_base_wakeup (self=0x7f7188004220, events=1) at tport.c:2808
        error = 0
#9  0x00007f719105e7bb in su_epoll_port_wait_events (self=0x7f71880008e0, tout=<optimized out>) at su_epoll_port.c:510
        ser = 0x7f7188000ea0
        magic = <optimized out>
        j = <optimized out>
        n = 1
        events = 0
        index = <optimized out>
        version = 5
        ev = {{events = 1, data = {ptr = 0x2, fd = 2, u32 = 2, u64 = 2}}, {events = 32625, data = {ptr = 0x7f7188000930, fd = -2013263568, u32 = 2281703728, u64 = 140125589735728}}, {
            events = 2051546784, data = {ptr = 0x57ab400007f71, fd = 32625, u32 = 32625, u64 = 1542288396287857}}, {events = 0, data = {ptr = 0xe1cb3a97, fd = -506774889, 
              u32 = 3788192407, u64 = 3788192407}}}
        __PRETTY_FUNCTION__ = "su_epoll_port_wait_events"
#10 0x00007f719105dd52 in su_base_port_run (self=0x7f71880008e0) at su_base_port.c:349
        tout = 217
        tout2 = 0
        __PRETTY_FUNCTION__ = "su_base_port_run"
#11 0x00007f7191062905 in su_pthread_port_clone_main (varg=0x7f7190e15800) at su_pthread_port.c:343
        arg = 0x0
        task = {{sut_port = 0x7f71880008e0, sut_root = 0x7f7188001150}}
        zap = 1
#12 0x00007f71999544a4 in start_thread (arg=0x7f717a482700) at pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f717a482700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140125359580928, 7411738368383383246, 140125738719006, 140125738719007, 140125351190528, 3, -7477879362551810354, 
                -7477950188350998834}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#13 0x00007f7198fc6d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
No locals.