[Pkg-gmagick-im-team] Bug#835488: Bug#835488: Bug#835488: imagemagick: Regression after security update to 8:6.8.9.9-5+deb8u4, unable to convert PDF files in PHP

[roucaries bastien]

I tried convert rose: pdf:rose.pdf
identify rose.pdf
work as expected. Seems to crash on multiple page pdf

On Mon, Aug 29, 2016 at 6:08 PM, roucaries bastien
<roucaries.bastien+debian at gmail.com> wrote:
> On Mon, Aug 29, 2016 at 11:35 AM, Udo Pütz <udo.puetz at muon.de> wrote:
>> On Mon, 29 Aug 2016 10:31:22 +0200 =?UTF-8?B?VWRvIFDDvHR6?=
>> <udo.puetz at muon.de> wrote:
>>> On Sat, 27 Aug 2016 21:41:26 +0200 "Tommie Van Mechgelen" <me at tommie.it>
>>> wrote:
>>> >
>>> > Hi,
>>>
>>> Hi,
>>>
>>> > The issue exists with all PDF-files that I have tried.
>>> >
>>> > I tried both commands, and the result is the same for both.  So working previous the security update.
>>> > identify bug.pdf
>>> > Identify -ping bug.pdf
>>> >
>>> > Â 8:6.8.9.9-5+deb8u4:
>>> > identify: unable to read image data `/tmp/magick-4028M_5kB2MxtwSv1' @ error/pnm.c/ReadPNMImage/617.
>>>
>>> I strace'd the php call and saw that the file in question is there (in
>>> the example above /tmp/magick-4028M_5kB2MxtwSv1), being opened and read
>>> and then unlinked. But it also tries to unlink
>>> /tmp/magick-4028M_5kB2MxtwSv1.cache (name + ".cache") - which doesn't
>>> exist. I think the bug comes from that.
>>
>> From the strace. The /tmp/magick-8360Zq2saDcjr5Vf1 was mentioned in the
>> error message but, as can be seen, was there and unlinked
>
> No it is perfectly normal (removing before reading is unix way to
> create tmp file)
>
> Could you try ltrace ?
>
>
>
>>
>> 8360  unlink("/tmp/magick-8360Zq2saDcjr5Vf1.cache") = -1 ENOENT (No such
>> file or directory)
>> 8360  unlink("/tmp/magick-8360Zq2saDcjr5Vf1") = 0
>> 8360  munmap(0x7f42fa1fb000, 790528)    = 0
>> 8360  brk(0x1b2c000)                    = 0x1b2c000
>> 8360  open("/var/www/files/htdocs/system/logs/error.log",
>> O_WRONLY|O_CREAT|O_APPEND, 0644) = 6
>> 8360  write(6, "[29-Aug-2016 10:07:38 Europe/Ber"..., 737) = 737
>> 8360  close(6)                          = 0
>> 8360  write(1, "<br><strong>Fatal error</strong>"..., 682) = 682
>>
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