ImageMagick hangs when decoding some PSD images

[Jordan Yelloz]

Binary package hint: imagemagick

I'm experiencing this problem with the latest 10.04 (x86_64) packages.
If I just run
convert "ubuntu-imagemagick-hang.psd" null:

ImageMagick will hang indefinitely while reading one of the layers of this PSD file.
This problem does not occur on my installations of Mac OS X (MacPorts) or Gentoo Linux.
I am experiencing this problem on every Ubuntu 10.04 and 9.10 system that I have tried (about 10, including 1 virtual machine).
If I manually build the latest subversion checkout of ImageMagick on one of the Ubuntu systems, the problem persists.

This doesn't seem to be related to OpenMP or threading because I built ImageMagick without both and I still encounter this problem. It's likely a problem with one of the libraries upon which ImageMagick depends.

[broucaries (roucaries-bastien+bugs)]

It does not hang but complain about memory exhaustion.

[Jordan Yelloz (jordan-yelloz)]

After how long does it complain about memory? I have left some of these running for several minutes and never run out of memory. I started one a few minutes ago and I will let it run until the end of the day and report back on the results.

[Jordan Yelloz (jordan-yelloz)]

Well, it appears that after 15-20 minutes, the process stops hogging all the CPU because it filled up the 32GB hard disk on my virtual machine:

df -h /dev/vda1
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 32G 30G 8.0K 100% /

du -sh /tmp/magick-XXYttOhe
29G /tmp/magick-XXYttOhe

Here's the stats on the process after the mentioned duration:
ps ax | grep conver[t]
 4698 pts/0 DN+ 4:29 convert -debug all ubuntu-imagemagick-hang.psd null:

I'll still let it run for the rest of the day in case anything interesting happens.

[Jordan Yelloz (jordan-yelloz)]

Just to follow up on this, it is many hours later and the same process is still running. It is the only active process on the machine and in 6 hours, it only used up 83 minutes of CPU time:

ps ax | grep conver[t]
 4698 pts/0 RN+ 83:37 convert -debug all ubuntu-imagemagick-hang.psd null:

I still have no free disk space but plenty of RAM is available.

[broucaries (roucaries-bastien+bugs)]

Could you report upstream

[Jordan Yelloz (jordan-yelloz)]

I did some more testing and this is a 64-bit issue, not a Ubuntu-specific bug.
I reported it to ImageMagick at http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16721 .

[broucaries (roucaries-bastien+bugs)]

File is really huge see upstream answer need 8TB