Axp-List Archive
Solved: Re: Apache & CGI & sigsegv

Subject: Solved: Re: Apache & CGI & sigsegv
From: Iso-H (jd@ts.ray.fi)
Date: Thu Jun 29 00:00:43 2000


On Wed, 28 Jun 2000, Iso-H wrote:

> On 28 Jun 2000, Phil Carmody wrote:
>
> > On Wed, 28 June 2000, Iso-H wrote:
> > > I have run into very wierd problem with quite simple
> > > CGI binary (coded by C++); binary just SIGSEGVs at very
> > > beginning. It seems that there is some kind of
> > > malloc problems; gdb's backtrace says so.
> >
> > Get out your binary chopping tool and reduce the code to the
> > minimal criminal. Then post it here, we have coders here, we have
> > compilers and systems here, I for one don't mind spending 10 minutes
> > checking to see if a 20 line program crashes or not, and then thinking
> > of workarounds, or whatever.
>
> I made stripped version of CGI, but obviously I stripped
> too much because original problem disappears too ;)
>
> I'll let you know if I can produce stripped but still buggy
> version of CGI binary.

 Eventually I found a char array which was freed too early.
 But problem was still interesting (and most misleading!)
 because it appeared only with AlphaLinux & Apache...

>
>
> >
> > Phil
> >
> > You're only as young as the man that you feel - Mae West
> > You're only as straight as the man that you feel - Dr R Thompson
> > _______________________________________________________________________
> >
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> >
> > _______________________________________________________________________
> >
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> >
> >
>
> Iso-H
>
> --
>
>
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>

Iso-H

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