(gdb) bt
#0  0x000000000060011e in LuaPushStringBuffer (luastate=0x5d040378,
    input=0x7ffd23149010 "UnityWeb", input_len=8372433) at util-lua.c:264
#1  0x00000000004f4eb9 in DetectLuaMatchBuffer (det_ctx=0x7ffd38b20110,
    s=0x3bdb67f0, sm=0x3bdb7000, buffer=0x7ffd23149010 "UnityWeb",
    buffer_len=8372433, offset=75, f=0x34cfbef0, flow_lock=0)
    at detect-lua.c:325
#2  0x00000000004acc98 in DetectEngineContentInspection (de_ctx=0x35f38440,
    det_ctx=0x7ffd38b20110, s=0x3bdb67f0, sm=0x3bdb7000, f=0x34cfbef0,
    buffer=0x7ffd23149010 "UnityWeb", buffer_len=8372433,
    stream_start_offset=0, inspection_mode=9 '\t', data=0x0)
    at detect-engine-content-inspection.c:547
#3  0x00000000004acd95 in DetectEngineContentInspection (de_ctx=0x35f38440,
    det_ctx=0x7ffd38b20110, s=0x3bdb67f0, sm=0x3bdb75e0, f=0x34cfbef0,
    buffer=0x7ffd23149010 "UnityWeb", buffer_len=8372433,
    stream_start_offset=0, inspection_mode=9 '\t', data=0x0)
    at detect-engine-content-inspection.c:582
#4  0x00000000004b457f in DetectEngineInspectHttpServerBody (tv=0x35f2c2d0,
    de_ctx=0x35f38440, det_ctx=0x7ffd38b20110, s=0x3bdb67f0, f=0x34cfbef0,
    flags=8 '\b', alstate=0x7ffee5d8c080, tx=0x7ffee5ebf4b0, tx_id=77)
    at detect-engine-hsbd.c:361
#5  0x00000000004cf1d8 in DeStateDetectStartDetection (tv=0x35f2c2d0,
    de_ctx=0x35f38440, det_ctx=0x7ffd38b20110, s=0x3bdb67f0, p=0x7fff69cff5e0,
    f=0x34cfbef0, flags=8 '\b', alproto=1, alversion=134 '\206')
---Type <return> to continue, or q <return> to quit---
    at detect-engine-state.c:528
#6  0x000000000047f349 in SigMatchSignatures (th_v=0x35f2c2d0,
    de_ctx=0x35f38440, det_ctx=0x7ffd38b20110, p=0x7fff69cff5e0)
    at detect.c:1764
#7  0x000000000047fc48 in Detect (tv=0x35f2c2d0, p=0x7fff69cff5e0,
    data=0x7ffd38b20110, pq=0x35f2c800, postpq=0x0) at detect.c:2033
#8  0x00000000005c9b4b in TmThreadsSlotVarRun (tv=0x35f2c2d0,
    p=0x7fff69cff5e0, slot=0x35f2c540) at tm-threads.c:134
#9  0x000000000058fa40 in TmThreadsSlotProcessPkt (tv=0x35f2c2d0,
    s=0x35f2c540, p=0x7fff69cff5e0) at tm-threads.h:150
#10 0x0000000000591958 in AFPReadFromRing (ptv=0x7fff7ffffe60)
    at source-af-packet.c:875
#11 0x0000000000592cd5 in ReceiveAFPLoop (tv=0x35f2c2d0, data=0x7fff7ffffe60,
    slot=0x35f2c400) at source-af-packet.c:1215
#12 0x00000000005ca45f in TmThreadsSlotPktAcqLoop (td=0x35f2c2d0)
    at tm-threads.c:338
#13 0x00007ffff666c182 in start_thread (arg=0x7fff937fe700)
    at pthread_create.c:312
#14 0x00007ffff52f247d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb)