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SubjectRe: 2.5.63 accesses below %esp (was: Re: ntfs OOPS (2.5.63))
Denis Vlasenko <> said:
> On 15 March 2003 20:34, Horst von Brand wrote:
> > Denis Vlasenko <> said:


> > > Why not? Disassemble from, say, EIP-16 and check whether you
> > > have an instruction starting exactly at EIP. If no, repeat from
> > > EIP-15, -14... You are guaranteed to succeed at EIP-0 ;)

> > But your previous success (if any) doesn't mean anything, and might
> > even screw up the decoding after EIP

> How come? If I started to decode at EIP-n and got a sequence of
> instructions at EIP-n, EIP-n+k1, EIP-n+k2, EIP-n+k3..., EIP,
> instructions prior to EIP can be wrong. Instruction at EIP
> and all subsequent ones ought to be right.

Iff you exactly hit EIP that way (sure, should check). But wrong previous
instructions _will_ confuse people or start them on all kind of wild goose
chases. Too much work for a dubious gain.
Dr. Horst H. von Brand User #22616
Departamento de Informatica Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria +56 32 654239
Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513
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