#0  0x00007f3e4a8a9c2b in unlink_chunk (p=p@entry=0x55c6e6635b30, av=0x7f3e4a9f1ba0 <main_arena>) at malloc.c:1610
        fd = 0x0
        bk = 0x0
#1  0x00007f3e4a8aad60 in _int_free (av=0x7f3e4a9f1ba0 <main_arena>, p=0x55c6e6635b30, have_lock=<optimized out>, have_lock@entry=0) at malloc.c:4593
        size = 688
        fb = <optimized out>
        nextchunk = 0x55c6e6635de0
        nextsize = 32
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        __PRETTY_FUNCTION__ = "_int_free"
#2  0x00007f3e4a8adcb3 in __GI___libc_free (mem=<optimized out>) at malloc.c:3367
        ar_ptr = <optimized out>
        p = <optimized out>
        err = 17
#3  0x00007f3e3cee7695 in BN_clear_free (a=0x55c6e6650640) at crypto/bn/bn_lib.c:218
#4  0x00007f3e4a252d10 in ssh_dh_finalize () at /usr/src/debug/libssh/libssh-0.10.5/src/dh.c:282
#5  0x00007f3e4a246047 in ssh_dh_finalize () at /usr/src/debug/libssh/libssh-0.10.5/src/init.c:210
        rc = <optimized out>
#6  _ssh_finalize (destructor=1) at /usr/src/debug/libssh/libssh-0.10.5/src/init.c:180
        rc = <optimized out>
#7  libssh_destructor () at /usr/src/debug/libssh/libssh-0.10.5/src/init.c:213
        rc = <optimized out>
#8  0x00007f3e4e7ab0e2 in _dl_call_fini (closure_map=closure_map@entry=0x7f3e4c02c510) at dl-call_fini.c:43
        array = 0x7f3e4a2a16b0
        sz = <optimized out>
        map = 0x7f3e4c02c510
        fini_array = <optimized out>
        fini = <optimized out>
#9  0x00007f3e4e7aef4e in _dl_fini () at dl-fini.c:114
        l = 0x7f3e4c02c510
        maps = 0x7ffe095d50b0
        i = 28
        l = <optimized out>
        nmaps = <optimized out>
        nloaded = <optimized out>
        ns = 0
        do_audit = 0
        __PRETTY_FUNCTION__ = "_dl_fini"
#10 0x00007f3e4a852066 in __run_exit_handlers (status=0, listp=0x7f3e4a9f1760 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:111
        atfct = <optimized out>
        onfct = <optimized out>
        cxafct = <optimized out>
        arg = <optimized out>
        f = <optimized out>
        new_exitfn_called = 886
        cur = 0x55c6e666dec0
#11 0x00007f3e4a8521b0 in __GI_exit (status=<optimized out>) at exit.c:141
#12 0x00007f3e4a839857 in __libc_start_call_main (main=main@entry=0x55c6e3896df0, argc=argc@entry=1, argv=argv@entry=0x7ffe095d5928) at ../sysdeps/nptl/libc_start_call_main.h:74
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140729055533352, 778787158478303625, 0, 140729055533368, 139905581568000, 94312721801264, -778317404185939575, -814487649515064951}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffe095d5928, 0x1}, data = {prev = 0x0, cleanup = 0x0, canceltype = 157112616}}}
        not_first_call = <optimized out>
#13 0x00007f3e4a83990a in __libc_start_main_impl (main=0x55c6e3896df0, argc=1, argv=0x7ffe095d5928, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe095d5918) at ../csu/libc-start.c:360
#14 0x000055c6e38b8325 in  ()