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SEGV in function readFromBMP #4

fouzhe opened this Issue Jul 23, 2018 · 0 comments


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fouzhe commented Jul 23, 2018

I used Clang 6.0 and AddressSanitizer to build jpeg-encoder, this file can cause SEGV in function readFromBMP when executing this command:

./a.out SEGV_readFromBMP

This is the ASAN information:

==26187==ERROR: AddressSanitizer: SEGV on unknown address 0x602003000010 (pc 0x7f6485b4a3f2 bp 0x000000000018 sp 0x7ffe77d368f8 T0)
==26187==The signal is caused by a WRITE memory access.
    #0 0x7f6485b4a3f1  (/lib/x86_64-linux-gnu/
    #1 0x7f6485b3403d  (/lib/x86_64-linux-gnu/
    #2 0x7f6485b29235 in fread (/lib/x86_64-linux-gnu/
    #3 0x49e7e6 in fread /home/fouzhe/llvm/llvm/projects/compiler-rt/lib/asan/../sanitizer_common/
    #4 0x51c515 in JpegEncoder::readFromBMP(char const*) /home/fouzhe/my_fuzz/jpeg_encoder/jpeg_encoder.cpp:202:17
    #5 0x51a88b in main /home/fouzhe/my_fuzz/jpeg_encoder/test.cpp:16:14
    #6 0x7f6485adb82f in __libc_start_main (/lib/x86_64-linux-gnu/
    #7 0x41a638 in _start (/home/fouzhe/my_fuzz/jpeg_encoder/a.out+0x41a638)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/
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