IM 6.9.2 crash with some PNG

[kriks]

Hi

we recently encountered a problem that IM crashes with a command like this

Code: Select all

convert -verbose -background transparent trim.png  +repage -resample 300x300 -density 300 -resize x740 -gravity NorthEast -splice -228.10734463277x50 -gravity SouthWest -splice 50x50 +repage -compress LZW -quality 90 PNG32:out.png
trim.png PNG 3148x4055 3148x4055+0+0 8-bit sRGB 9.158MB 0.000u 0:00.000
Abandon

I cannot give the source file publicly, but I can send it to IM people if needed.
The source PNG is also the result of another convert command.

I've tested it on gentoo and mageia.

[fmw42]

-quality 90

FYI, 90 means something different for PNG than it does for JPG. See http://www.imagemagick.org/script/comma ... hp#quality

Also you may be running out of tmp space. Check your tmp directory to see if it needs cleaning out from old files left behind that were not cleaned up automatically.

[snibgo]

It just says "Abandon" when it fails? I've never seen that.

What is the density of the input file? "-resample" can try to make very large sizes if the input desity is weird.

[glennrp]

If you have pngcheck, you can post the output of "pngcheck -v file.png", which should give us enough information to diagnose the problem.

[kriks]

Thank you all for having a look.

For the /tmp, I have 20GB available, it should be enough

Here is the pngcheck output :

Code: Select all

# pngcheck -v trim.png 
File: trim.png (9158238 bytes)
  chunk IHDR at offset 0x0000c, length 13
    3148 x 4055 image, 32-bit RGB+alpha, interlaced
  chunk cHRM at offset 0x00025, length 32
    White x = 0.3127 y = 0.329,  Red x = 0.64 y = 0.33
    Green x = 0.3 y = 0.6,  Blue x = 0.15 y = 0.06
  chunk bKGD at offset 0x00051, length 6
    red = 0x00ff, green = 0x00ff, blue = 0x00ff
  chunk pHYs at offset 0x00063, length 9: 47834x47834 pixels/meter (1215 dpi)
  chunk IDAT at offset 0x00078, length 32768
    zlib: deflated, 32K window, maximum compression
    rows per pass: 507, 507, 507, 1014, 1014, 2028, 2027
  chunk IDAT at offset 0x08084, length 32768
  chunk IDAT at offset 0x10090, length 32768
  chunk IDAT at offset 0x1809c, length 32768
  chunk IDAT at offset 0x200a8, length 32768
  chunk IDAT at offset 0x280b4, length 32768
  chunk IDAT at offset 0x300c0, length 32768
  chunk IDAT at offset 0x380cc, length 32768
  chunk IDAT at offset 0x400d8, length 32768
  chunk IDAT at offset 0x480e4, length 32768
  chunk IDAT at offset 0x500f0, length 32768
  chunk IDAT at offset 0x580fc, length 32768
  chunk IDAT at offset 0x60108, length 32768
  chunk IDAT at offset 0x68114, length 32768
  chunk IDAT at offset 0x70120, length 32768
  chunk IDAT at offset 0x7812c, length 32768
  chunk IDAT at offset 0x80138, length 32768
  chunk IDAT at offset 0x88144, length 32768
  chunk IDAT at offset 0x90150, length 32768
  chunk IDAT at offset 0x9815c, length 32768
  chunk IDAT at offset 0xa0168, length 32768
  chunk IDAT at offset 0xa8174, length 32768
  chunk IDAT at offset 0xb0180, length 32768
  chunk IDAT at offset 0xb818c, length 32768
  chunk IDAT at offset 0xc0198, length 32768
  chunk IDAT at offset 0xc81a4, length 32768
  chunk IDAT at offset 0xd01b0, length 32768
  chunk IDAT at offset 0xd81bc, length 32768
  chunk IDAT at offset 0xe01c8, length 32768
  chunk IDAT at offset 0xe81d4, length 32768
  chunk IDAT at offset 0xf01e0, length 32768
  chunk IDAT at offset 0xf81ec, length 32768
  chunk IDAT at offset 0x1001f8, length 32768
  chunk IDAT at offset 0x108204, length 32768
  chunk IDAT at offset 0x110210, length 32768
  chunk IDAT at offset 0x11821c, length 32768
  chunk IDAT at offset 0x120228, length 32768
  chunk IDAT at offset 0x128234, length 32768
  chunk IDAT at offset 0x130240, length 32768
  chunk IDAT at offset 0x13824c, length 32768
  chunk IDAT at offset 0x140258, length 32768
  chunk IDAT at offset 0x148264, length 32768
  chunk IDAT at offset 0x150270, length 32768
  chunk IDAT at offset 0x15827c, length 32768
  chunk IDAT at offset 0x160288, length 32768
  chunk IDAT at offset 0x168294, length 32768
  chunk IDAT at offset 0x1702a0, length 32768
  chunk IDAT at offset 0x1782ac, length 32768
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  chunk IDAT at offset 0x1f0360, length 32768
  chunk IDAT at offset 0x1f836c, length 32768
  chunk IDAT at offset 0x200378, length 32768
  chunk IDAT at offset 0x208384, length 32768
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  chunk IDAT at offset 0x560888, length 32768
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  chunk IDAT at offset 0x61899c, length 32768
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  chunk IDAT at offset 0x6289b4, length 32768
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  chunk IDAT at offset 0x678a2c, length 32768
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  chunk IDAT at offset 0x688a44, length 32768
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  chunk IDAT at offset 0x6b8a8c, length 32768
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  chunk IDAT at offset 0x738b4c, length 32768
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  chunk IDAT at offset 0x800c78, length 32768
  chunk IDAT at offset 0x808c84, length 32768
  chunk IDAT at offset 0x810c90, length 32768
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  chunk IDAT at offset 0x828cb4, length 32768
  chunk IDAT at offset 0x830cc0, length 32768
  chunk IDAT at offset 0x838ccc, length 32768
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  chunk IDAT at offset 0x8a8d74, length 32768
  chunk IDAT at offset 0x8b0d80, length 32768
  chunk IDAT at offset 0x8b8d8c, length 12478
  chunk IEND at offset 0x8bbe56, length 0
No errors detected in trim.png (285 chunks, 82.1% compression).

here is an identify output

Code: Select all

# identify -verbose trim.png            
Image: trim.png
  Format: PNG (Portable Network Graphics)
  Mime type: image/png
  Class: DirectClass
  Geometry: 3148x4055+0+0
  Resolution: 478.34x478.34
  Print size: 6.58109x8.47723
  Units: PixelsPerCentimeter
  Type: TrueColorAlpha
  Endianess: Undefined
  Colorspace: sRGB
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
    alpha: 1-bit
  Channel statistics:
    Pixels: 12765140
    Red:
      min: 0 (0)
      max: 255 (1)
      mean: 246.909 (0.968272)
      standard deviation: 27.0745 (0.106174)
      kurtosis: 43.4289
      skewness: -5.99989
      entropy: 0.276577
    Green:
      min: 0 (0)
      max: 255 (1)
      mean: 241.314 (0.946329)
      standard deviation: 35.0938 (0.137623)
      kurtosis: 17.1845
      skewness: -3.74818
      entropy: 0.301701
    Blue:
      min: 0 (0)
      max: 255 (1)
      mean: 230.647 (0.904497)
      standard deviation: 52.4057 (0.205512)
      kurtosis: 4.10558
      skewness: -2.19892
      entropy: 0.318425
    Alpha:
      min: 0 (0)
      max: 255 (1)
      mean: 55.1324 (0.216205)
      standard deviation: 104.972 (0.411656)
      kurtosis: -0.0989223
      skewness: -1.3788
      entropy: 0.0941472
  Image statistics:
    Overall:
      min: 0 (0)
      max: 255 (1)
      mean: 229.684 (0.900723)
      standard deviation: 62.7099 (0.245921)
      kurtosis: 8.26207
      skewness: -3.15189
      entropy: 0.247712
  Alpha: srgba(255,255,255,0)   #FFFFFF00
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: white
  Border color: srgba(223,223,223,1)
  Matte color: grey74
  Transparent color: none
  Interlace: PNG
  Intensity: Undefined
  Compose: Over
  Page geometry: 3148x4055+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Zip
  Orientation: Undefined
  Properties:
    date:create: 2015-10-01T15:14:19+02:00
    date:modify: 2015-10-01T14:16:41+02:00
    png:bKGD: chunk was found (see Background color, above)
    png:cHRM: chunk was found (see Chromaticity, above)
    png:IHDR.bit-depth-orig: 8
    png:IHDR.bit_depth: 8
    png:IHDR.color-type-orig: 6
    png:IHDR.color_type: 6 (RGBA)
    png:IHDR.interlace_method: 1 (Adam7 method)
    png:IHDR.width,height: 3148, 4055
    png:pHYs: x_res=47834, y_res=47834, units=1
    png:sRGB: intent=0 (Perceptual Intent)
    signature: 1b2de8cdec0f61064251d6460fd8c37c3a77d0903f9179c011b7a2912f9ad6af
  Artifacts:
    filename: trim.png
    verbose: true
  Tainted: False
  Filesize: 9.158MB
  Number pixels: 12.77M
  Pixels per second: 271.6GB
  User time: 0.000u
  Elapsed time: 0:01.000
  Version: ImageMagick 6.9.2-0 Q16 x86_64 2015-10-01 http://www.imagemagick.org

[dlemstra]

Thanks for providing the image (too bad we don't get whats on it ). We are able to reproduce the issue and just pushed a fix for this to our GIT repository. Your issue will be fixed in the next release of ImageMagick (6.9.2-4) that will be published soon.

[kriks]

Thank you very much!
Can you tell me what was the problem ?

[dlemstra]

The problem was in the -split operation. It was accessing pixels outside the image and that caused an access violation.