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[XiaoyuHe]

# enviroment
ubuntu 18.04
./jhead poc

# version
3.04

# asan out
ASAN:DEADLYSIGNAL
=================================================================
==10836==ERROR: AddressSanitizer: SEGV on unknown address 0x624000052108 (pc 0x55bba233d316 bp 0x0fff9bb96ac2 sp 0x7ffcddcb5570 T0)
==10836==The signal is caused by a READ memory access.
    #0 0x55bba233d315 in ProcessGpsInfo gpsinfo.c:122
    #1 0x55bba232f4d5 in ProcessExifDir exif.c:866
    #2 0x55bba233095a in process_EXIF exif.c:1041
    #3 0x55bba231c382 in ReadJpegSections jpgfile.c:287
    #4 0x55bba231d90e in ReadJpegSections jpgfile.c:126
    #5 0x55bba231d90e in ReadJpegFile jpgfile.c:379
    #6 0x55bba231366c in ProcessFile jhead.c:905
    #7 0x55bba230eb2e in main jhead.c:1756
    #8 0x7f785c448bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #9 0x55bba2311279 in _start (/home/fuzz/jhead-3.04/jhead+0x12279)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV gpsinfo.c:122 in ProcessGpsInfo
==10836==ABORTING