#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
        set = {__val = {0, 0, 0, 0, 3, 0 <repeats 11 times>}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f7fb9f6c3ea in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {140186561246496, 3432, 140186557809208, 23, 140186390535952, 140186512205680, 140186561246496, 23, 94280407654940, 23, 1, 140186561229824, 140186557762171, 140186512205648, 140186563526734, 140186512205680}}, sa_flags = 1580540395, sa_restorer = 0x2a4e}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x000055bf5e179651 in ?? ()
No symbol table info available.
#3  <signal handler called>
No locals.
#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
        set = {__val = {0, 2319406792476799074, 3472328228581748082, 4048771456345059376, 3906082338877026362, 2314885531189064240, 2314885530818453536, 3395749441387372576, 3414407380873671541, 7311142527123222381, 3417785037644394348, 7311142389684268877, 749137288993206124, 3832671457653515831, 3991938786932043875, 3472334919070540390}}
        pid = <optimized out>
        tid = <optimized out>
#5  0x00007f7fb9f6c3ea in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x306262663766370a, sa_sigaction = 0x306262663766370a}, sa_mask = {__val = {7365405400577892918, 3486690117951841847, 2337418197644357680, 3472328317736071216, 3828113766469873696, 2314885621399893298, 2314885530818453536, 2314885530818453536, 8660248813382869024, 7596496373740942904, 3419760881481315694, 3329341198525359212, 7090415575491047283, 3256155514969927778, 3904729051691443767, 140186512210336}}, sa_flags = 76, sa_restorer = 0x7f7fb74339a0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#6  0x00007f7fb9fae0d0 in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f7fba0c33a8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
        ap = {{gp_offset = 40, fp_offset = 21951, overflow_arg_area = 0x7f7fb74339b0, reg_save_area = 0x7f7fb7433940}}
        fd = 2
        on_2 = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#7  0x00007f7fb9fb775a in malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7f7fba0bff3b "free(): invalid pointer", action=3) at malloc.c:5046
        buf = "000055bf61a2e6b0"
        cp = <optimized out>
        ar_ptr = <optimized out>
        str = 0x7f7fba0bff3b "free(): invalid pointer"
        action = 3
#8  _int_free (av=<optimized out>, p=<optimized out>, have_lock=<optimized out>) at malloc.c:3902
        size = <optimized out>
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = <optimized out>
        locked = <optimized out>
#9  0x00007f7fb9fbb18c in __GI___libc_free (mem=<optimized out>) at malloc.c:2982
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
#10 0x0000000041f961f0 in ?? ()
No symbol table info available.
#11 0x000055bf61a2e6b0 in ?? ()
No symbol table info available.
#12 0x000055bf5f6ea350 in ?? ()
No symbol table info available.
#13 0x000055bf5f6ea350 in ?? ()
No symbol table info available.
#14 0x0000000000000000 in ?? ()
No symbol table info available.