#17 Bug report of program djpeg

[Anonymous]

Bug Description:
When executing djpeg (newest release version) , the program terminates with Nonfatal Error shown below.

Corrupt JPEG data: 2 extraneous bytes before marker 0xc1
P6
227 9
255

Then I apply MSan (Memory Sanitizer ) to check for memory errors and the error report is as follows.

==83120==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x4bd5e0 in h2v2_merged_upsample /jpeg-9c/jdmerge.c:380:26
    #1 0x4bca17 in merged_2v_upsample /jpeg-9c/jdmerge.c:228:5
    #2 0x4f0e26 in process_data_simple_main /jpeg-9c/jdmainct.c:366:3
    #3 0x4a3b7f in jpeg_read_scanlines /jpeg-9c/jdapistd.c:174:3
    #4 0x4947a1 in main /jpeg-9c/djpeg.c:589:21
    #5 0x7fba0e279c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
    #6 0x41b599 in _start (/djpeg/djpeg_msan+0x41b599)

SUMMARY: MemorySanitizer: use-of-uninitialized-value /jpeg-9c/jdmerge.c:380:26 in h2v2_merged_upsample

Step to Reproduce
download the libjpeg from github and build it with MSAN
Execute djpeg with given testcases

[Anonymous]

Please could you double check the file you've attached? It looks like a tiff file?