Re: 2.5.63 accesses below %esp (was: Re: ntfs OOPS (2.5.63))

From: Szakacsits Szabolcs (szaka@sienet.hu)
Date: Tue Mar 11 2003 - 11:29:46 EST


On 11 Mar 2003, Alan Cox wrote:
> On Mon, 2003-03-10 at 07:22, Szakacsits Szabolcs wrote:
> > The question is if we want to support the buggy 2.9[56] compilers or
> > not. I checked Red Hat 7.3 and the latest errata gcc fixes this issue,
> > the generated code is ok. But your complier didn't and probably many
> > more out there don't.
>
> I don't think gcc 2.96 had that problem.

Randy's compliler is 2.96 and it forgot to do a 'sub $0xc,%esp'. See
yourself all the data at http://bugme.osdl.org/show_bug.cgi?id=432

Red Hat had this bug also for 1-1.5 year (there is a bugzilla entry
submitted by a Parasoft employee, the bug also screw[s|ed] user space
apps, e.g. by signal handling).

        Szaka

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