Hi, this is upstream -

I agree with Martin-Éric that you should definitely file this bug
against gs-esp, too, since this is where the problem originates.

Nevertheless thanks for this hint at the gs options. I will review them
and change the CUPS-PDF defaults accordingly where necessary.

Volker


On Wed, 2007-05-02 at 11:28 +0300, =?UTF-8?Q? Martin-=C3=89ric?= Racine
wrote:
> Thanks for your report.
> 
> "Critical: causes serious data loss, or introduces a security hole on
> systems where you install the package."
> 
> Did the above issue introduce a security hole or cause serious data loss?
> I seriously doubt that it did. Thus, I'm bringing severity down to important.
> 
> PS: I would tremendously appreciate it if you filed a bug against
> gs-esp for this issue, as this seems to be where the real problem is.
> Thanks!
> 
> On 5/2/07, Christopher Zimmermann <[EMAIL PROTECTED]> wrote:
> > Package: cups-pdf
> > Version: 2.4.2-3
> > Severity: critical
> > Tags: patch
> > Justification: breaks the whole system
> >
> > Hi!
> >
> > When printing certain files via cups-pdf, gs runs forever using all cpu
> > and slowly eating all memory. In consequence the system becomes
> > unresponsive after a few seconds and therefore unusable.
> > If you think this bug is not critical, please tell me, so I know better
> > next time.
> > A typical example in our environment would be a MS Excel user printing
> > to the cups-pdf printer using dim borderlines. If you'd like an example
> > .ps file I can provide one.
> > Actually this seems to be a bug in gs-esp, but since I managed to fix it
> > in cups-pdf, I file it against cups-pdf.
> >
> > I could fix it by adding -c .setpdfwrite in the config:
> > GSCall %s -q -dCompatibilityLevel=%s -dNOPAUSE -dBATCH -dSAFER 
> > -sDEVICE=pdfwrite -sOutputFile="%s" -dAutoRotatePages=/PageByPage 
> > -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode 
> > -dPDFSETTINGS=/prepress -c .setpdfwrite -f %s
> >
> > I removed the -c save pop, since /usr/share/doc/gs-esp/Use.htm
> > [Improving Performance] suggests that it is not needed.
> >
> > I don't really understand why this fix works and probably this has to be
> > fixed in gs, too. But the default of gs should be changed anyway as far
> > as I understand the -c .setpdfwrite option.
> > I don't think it is the same bug as #267423 since for me gs never
> > finishes.
> >
> >
> > Kind Regards,
> >
> > Christopher Zimmermann
> 
-- 

Volker Christian Behr
Experimentelle Physik V (Biophysik), Physikalisches Institut
Universitaet Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany

Office: Room F-069a
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