Erroreous rendering of certain JPEG files

[rr-]

Summary of the bug:
FFmpeg doesn't draw the image correctly, whereas Firefox displays the image as expected.

How to reproduce:

ffplay 20242.jpg

ffplay version 3.1.3 Copyright (c) 2003-2016 the FFmpeg developers
  built with gcc 6.1.1 (GCC) 20160802
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-netcdf --enable-shared --enable-version3 --enable-x11grab
  libavutil      55. 28.100 / 55. 28.100
  libavcodec     57. 48.101 / 57. 48.101
  libavformat    57. 41.100 / 57. 41.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 47.100 /  6. 47.100
  libavresample   3.  0.  0 /  3.  0.  0
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
[mjpeg @ 0x7ff1f0002440] mjpeg: error, decode_app parser read over the end
Input #0, image2, from '20242.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 21662 kb/s
    Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 807x538 [SAR 72:72 DAR 3:2], 25 tbr, 25 tbn, 25 tbc
[mjpeg @ 0x7ff1f0002ac0] mjpeg: error, decode_app parser read over the end
[swscaler @ 0x7ff1e80caf20] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x7ff1e80e2c80] deprecated pixel format used, make sure you did set range correctly
   0.61 M-V: -0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   

[rr-]

Input file

[rr-]

ImageMagick handles the file correctly too.

[rr-]

Out of 42963 images downloaded from the Internet, 24 of them exhibit the problem, making up for ~0.06% of test population. Please let me know if more attachments are needed. All of them are correctly decoded by both Firefox and ImageMagick.

[Carl Eugen Hoyos]

Please do not attach output files unless asked to do so, they often lead to confusion.

[Carl Eugen Hoyos]

Fixed in e82b181f8096d20a163b054b8117838437d6b694
Thank you for the sample!