#0  malloc_consolidate (av=0x7fd419fca1c0) at malloc.c:5153
        fb = <optimized out>
        maxfb = <optimized out>
        p = 0xffffffff
        nextp = <optimized out>
        unsorted_bin = <optimized out>
        first_unsorted = <optimized out>
        nextchunk = <optimized out>
        size = <optimized out>
        nextsize = <optimized out>
        prevsize = <optimized out>
        nextinuse = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
#1  0x00007fd419ca9dff in malloc_consolidate (av=0x7fd419fca1c0) at malloc.c:5115
No locals.
#2  _int_malloc (av=0x7fd419fca1c0, bytes=1024) at malloc.c:4373
        nb = 1040
        idx = <optimized out>
        bin = <optimized out>
        victim = <optimized out>
        size = <optimized out>
        victim_index = <optimized out>
        remainder = <optimized out>
        remainder_size = <optimized out>
        block = <optimized out>
        bit = <optimized out>
        map = <optimized out>
        fwd = <optimized out>
        bck = <optimized out>
        errstr = 0x0
        __func__ = "_int_malloc"
#3  0x00007fd419cac77d in __GI___libc_malloc (bytes=1024) at malloc.c:3660
        ar_ptr = 0x7fd419fca1c0
        victim = <optimized out>
        hook = <optimized out>
        __func__ = "__libc_malloc"
#4  0x000000000050261f in ?? ()
No symbol table info available.
#5  0x00000000004b6569 in PyEval_EvalFrameEx ()
No symbol table info available.
#6  0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#7  0x00000000004b6a5b in PyEval_EvalFrameEx ()
No symbol table info available.
#8  0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#9  0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#10 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#11 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#12 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#13 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#14 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#15 0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#16 0x0000000000449098 in ?? ()
No symbol table info available.
#17 0x000000000041ad2a in PyObject_Call ()
No symbol table info available.
#18 0x00000000004b84b6 in PyEval_EvalFrameEx ()
No symbol table info available.
#19 0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#20 0x0000000000449098 in ?? ()
No symbol table info available.
#21 0x000000000041ad2a in PyObject_Call ()
No symbol table info available.
#22 0x00000000004b84b6 in PyEval_EvalFrameEx ()
No symbol table info available.
#23 0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#24 0x00000000004b6a5b in PyEval_EvalFrameEx ()
No symbol table info available.
#25 0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#26 0x00000000004b6a5b in PyEval_EvalFrameEx ()
No symbol table info available.
#27 0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#28 0x00000000004b6a5b in PyEval_EvalFrameEx ()
No symbol table info available.
#29 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#30 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#31 0x00000000004b6d77 in PyEval_EvalFrameEx ()
No symbol table info available.
#32 0x00000000004bcd2d in PyEval_EvalCodeEx ()
No symbol table info available.
#33 0x0000000000448edf in ?? ()
No symbol table info available.
#34 0x000000000041ad2a in PyObject_Call ()
No symbol table info available.
#35 0x000000000043074e in ?? ()
No symbol table info available.
#36 0x000000000041ad2a in PyObject_Call ()
No symbol table info available.
#37 0x00000000004b5d76 in PyEval_CallObjectWithKeywords ()
No symbol table info available.
#38 0x00000000004f06c0 in ?? ()
No symbol table info available.
#39 0x00007fd41ae79efc in start_thread (arg=0x7fd40957b700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7fd40957b700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -6355861968330250365, 140736146124480, 140548666538432, 0, 3, 6369043809730471811, 6369010137721907075}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#40 0x00007fd419d1189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#41 0x0000000000000000 in ?? ()
No symbol table info available.