[oss-fuzz 6101449743597568] Floating-point-exception in ParseJSS

Ref.:

• https://oss-fuzz.com/testcase-detail/6101449743597568

AddressSanitizer:DEADLYSIGNAL
=================================================================
==405==ERROR: AddressSanitizer: FPE on unknown address 0x574e8158fafe (pc 0x574e8158fafe bp 0x7ffeefa6bad0 sp 0x7ffeefa6b980 T0)
    #0 0x574e8158fafe in ParseJSS /src/vlc/modules/demux/subtitle.c:1878:21
    #1 0x574e81585fe0 in Open /src/vlc/modules/demux/subtitle.c:669:13
    #2 0x574e819ca68e in demux_Probe /src/vlc/src/input/demux.c:112:15
    #3 0x574e81979036 in vlc_module_load /src/vlc/src/modules/modules.c:230:15
    #4 0x574e819c9bed in demux_NewAdvanced /src/vlc/src/input/demux.c:196:20
    #5 0x574e819c9160 in demux_New /src/vlc/src/input/demux.c:77:12
    #6 0x574e8140f0e0 in demux_process_stream /src/vlc/test/src/input/demux-run.c:300:22
    #7 0x574e8140e54a in LLVMFuzzerTestOneInput /src/vlc/test/vlc-demux-libfuzzer.c:63:5
    #8 0x574e8140ed09 in ExecuteFilesOnyByOne /src/aflplusplus/utils/aflpp_driver/aflpp_driver.c:267:7
    #9 0x574e8140eb09 in LLVMFuzzerRunDriver /src/aflplusplus/utils/aflpp_driver/aflpp_driver.c:0
    #10 0x574e8140e6ab in main /src/aflplusplus/utils/aflpp_driver/aflpp_driver.c:323:10
    #11 0x798951320082 in __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/libc-start.c:308:16
    #12 0x574e81326f2d in _start

==405==Register values:
rax = 0x0000000080000000  rbx = 0x00007ffeefa6b980  rcx = 0x0000000000000000  rdx = 0x00000000ffffffff
rdi = 0x00007659507e38b8  rsi = 0x00000000ffffffff  rbp = 0x00007ffeefa6bad0  rsp = 0x00007ffeefa6b980
 r8 = 0x0000000000000001   r9 = 0x0700fafafafdfa00  r10 = 0x000075a9507e7ef0  r11 = 0x0000574e81e0a9a0
r12 = 0x000075894f6d1a90  r13 = 0x000075a9507e7eb0  r14 = 0x000075894f8d01f0  r15 = 0x00000eb129f1a03f
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: FPE (/mnt/scratch0/clusterfuzz/bot/builds/clusterfuzz-builds-afl_vlc_8f98ce4aa4498db36bdafd2ab37989a4592ed90c/revisions/vlc-demux-dec-libfuzzer-subtitle+0x3d3afe)
==405==ABORTING

Samples:

• clusterfuzz-testcase-vlc-demux-dec-libfuzzer-subtitle-6101449743597568