[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]

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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