MAGICK_DEBUG gives garbled output and crashes eventually

[jn0101]

I have set MAGICK_DEBUG=Resource

After this the messages of IM appears garbled in the beginning.

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C:\Jacob>convert x.jpg -resample 1000x1000 y.jpg
x☺╟ 6.3.6 Resource convert[4004]: resource.c/AcquireMagickResource/216/Resource
  Area: 1.0756mb/1.0756mb/2.98438gb
x☺╟ 6.3.6 Resource convert[4004]: resource.c/AcquireMagickResource/216/Resource
  Memory: 1.0756mb/1.0756mb/2.23828gb
x☺╟ 6.3.6 Resource convert[4004]: resource.c/AcquireMagickResource/216/Resource
  Area: 207.484mb/207.484mb/2.98438gb
x☺╟ 6.3.6 Resource convert[4004]: resource.c/AcquireMagickResource/216/Resource
  Memory: 207.484mb/208.559mb/2.23828gb
x☺╟ 6.3.6 Resource convert[4004]: resource.c/AcquireMagickResource/216/Resource
  Area: 14.9388mb/14.9388mb/2.98438gb
x☺╟ 6.3.6 Resource convert[4004]: resource.c/AcquireMagickResource/216/Resource
  Memory: 14.9388mb/223.498mb/2.23828gb

The above prints the four letters 'x☺╟ ' in front of all the messages.


In a longer program that invokes many operations this garbling gets longer and longer:

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°¢8D(q►;_§δ↓▌? 6.3.6 Resource ImageMagick[4064]: resource.c/AcquireMagickResource/216/Resource
  Area: 174.387mb/174.387mb/2.98438gb 6.3.6 Resource ImageMagick[4064]: resource.c/AcquireMagickResource/216/Resource
  Memory: 174.387mb/348.774mb/2.23828gb 6.3.6 Resource ImageMagick[4064]: resource.c/RelinquishMagickResource/824/Resource
  Memory: 174.387mb/174.387mb/2.23828gb 74.078u 6.3.6 Resource ImageMagick[4064]: resource.c/AcquireMagickResource/216/Resource
  Disk: 174.387mb/174.387mb/4eb ImageMagick[4064]: resource.c/AcquireUniqueFileResource/418/Resource
  C:/DOCUME~1/Admin/LOCALS~1/Temp/magick-wFanSi0N ImageMagick[4064]: resource.c/RelinquishUniqueFileResource/857/Resource
  C:/DOCUME~1/Admin/LOCALS~1/Temp/magick-wFanSi0N ImageMagick[4064]: resource.c/AcquireUniqueFileResource/418/Resource
  C:/DOCUME~1/Admin/LOCALS~1/Temp/magick-fA7t3rBx 1:18 74.094u 6.3.6 Resource ImageMagick[4064]: resource.c/AcquireMagickResource/216/Resource
  File: 0b/0b/1.5kb

This has been seen using IM 636 Q8 on Linux and Windows.

On Linux the program eventually crashes when MAGICK_DEBUG=Resource is set, with the message:
'*** glibc detected *** malloc(): memory corruption ***
A similar message has not (yet) been seen on Windows.

To me it seems that setting MAGICK_DEBUG=Resource will corrupt memory.

[jn0101]

Here are som backtraces on Linux:

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*** glibc detected *** /home/local/jdk1.6.0/bin/java: malloc(): memory corruption: 0x7b508208 ***
======= Backtrace: =========
/lib/i686/libc.so.6[0xb7e73db6]
/lib/i686/libc.so.6(__libc_malloc+0x97)[0xb7e757b7]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(AcquireMagickMemory+0x21)[0x7de170a1]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ResizeMagickMemory+0x5c)[0x7de1711c]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ResizeQuantumMemory+0x5f)[0x7de1718f]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(LogMagickEventList+0x211)[0x7de12a11]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(LogMagickEvent+0x43)[0x7de13433]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(AcquireMagickResource+0xeb)[0x7de57dfb]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7dd751e0]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7dd75eae]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(SetCacheNexus+0x240)[0x7dd76fc0]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7dd77201]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(SetImagePixels+0x83)[0x7dd6f073]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(SetImageExtent+0x53)[0x7de026d3]
/home/j/Caramba/magick-beta/ImageMagick/lib/ImageMagick-6.3.6/modules-Q8/coders/jpeg.so[0x7e1b2834]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ReadImage+0x255)[0x7dd95625]

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*** glibc detected *** /home/local/jdk1.6.0/bin/java: free(): invalid next size (normal): 0x7e062a20 ***
======= Backtrace: =========
/lib/i686/libc.so.6[0xb7e364e6]
/lib/i686/libc.so.6(cfree+0x90)[0xb7e3a010]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(RelinquishMagickMemory+0x21)[0x7de16fa1]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(LogMagickEventList+0x387)[0x7de12b87]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(LogMagickEvent+0x43)[0x7de13433]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(AcquireMagickResource+0xeb)[0x7de57dfb]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7dd751e0]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7dd75eae]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(SetCacheNexus+0x240)[0x7dd76fc0]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(GetCacheNexus+0x71)[0x7dd77281]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7dd77451]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(GetImagePixels+0x83)[0x7dd6fde3]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ProfileImage+0x3fe)[0x7de2fdbe]

Code: Select all

*** glibc detected *** /home/local/jdk1.6.0/bin/java: free(): invalid next size (normal): 0x0851e3d8 ***
======= Backtrace: =========
/lib/i686/libc.so.6[0xb7e9a4e6]
/lib/i686/libc.so.6[0xb7e9c0f2]
/lib/i686/libc.so.6(realloc+0x10d)[0xb7e9e27d]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ResizeMagickMemory+0x34)[0x7de170f4]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ResizeQuantumMemory+0x5f)[0x7de1718f]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ConcatenateString+0x8b)[0x7de6d99b]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ParseCharacterContent+0x7f)[0x7de95a8f]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(NewXMLTree+0x7f4)[0x7de973e4]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10[0x7de10b1c]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(GetLocaleInfo_+0x20c)[0x7de1105c]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(GetLocaleMessage+0x85)[0x7de111f5]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(GetLocaleExceptionMessage+0x6d)[0x7ddeb0bd]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ThrowMagickExceptionList+0x4a)[0x7ddeb99a]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(ThrowMagickException+0x51)[0x7ddebb31]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(NewXMLTree+0x190f)[0x7de984ff]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(GetImageProperty+0xb21)[0x7de2c2b1]
/home/j/Caramba/magick-beta/ImageMagick/lib/libMagick.so.10(SetImageProfile+0xe2)[0x7de2f392]

And some IM output on Linux:

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� 6.3.6 Resource CIS2koersel[22125]: resource.c/unknown/216/Resource
  Area: 25.7812kb/25.7812kb/3.96094gb
� 6.3.6 Resource CIS2koersel[22125]: resource.c/unknown/216/Resource
  Memory: 25.7812kb/25.7812kb/2.9707gb

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�������%9�%9 134.161u 6.3.6 Resource CIS2koersel[22125]: resource.c/unknown/824/Resource
  Memory: 25.7812kb/0b/2.9707gb 6.3.6 Resource CIS2koersel[22125]: resource.c/unknown/216/Resource
  Area: 25.7812kb/25.7812kb/3.96094gb
���:�t��t� 6.3.6 Resource CIS2koersel[22125]: resource.c/unknown/216/Resource
  Memory: 25.7812kb/51.5625kb/2.9707gb 6.3.6 Resource CIS2koersel[22125]: resource.c/unknown/216/Resource
  Memory: 25.7812kb/51.5625kb/2.9707gb

[magick]

The problem you reported was a transient bug and is fixed in the latest ImageMagick release, 6.3.7-2.