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SubjectRe: 2.0.33 off-by-one

Yes! I agree with this!

I've got long uptime here and dont want to ruin it..

Is this bug fixed in 34pre8? I've got the 34pre8 kernel compiled and in
place so If I do reboot I'm coming back up with that..

On Sat, 18 Apr 1998, ADAM Sulmicki wrote:

> -> Date: Sat, 18 Apr 1998 12:22:09 -0400 (EDT)
> -> From: Jon Lewis <jlewis@inorganic5.fdt.net>
> ->
> -> Am I correct in assuming this is the recently fixed 2.0.33
> -> off-by-one IP header bug?
> ->
> ->Yep, thats the signature OOPS, apply the fix and reboot ;-)
>
> Not even that :-), I don't think bug-fix is enough of cause to justify
> rebooting my box which has already 80 days of up time. You reboot windooze
> boxes not linux boxes.
>
> This fix is so trival (either David's or Allan's) that it shouldn't
> be hard to come up with a binary patch to apply it to running
> kernel (am I right?)
>
> It reminds me old days when I would run games under Borland's debugger
> and 'patch' it so that I would win them in 15 min or so.
>
> Anyways, anyone cares to comment how it could be done.
>
> As I see the biggest problem is that the patched code is one operand (add)
> longer than the old one (Allan's patch).. I think it is around 15 bytes.
> So it may be necessary to put it in some other place in memory and
> in original place put undonditional jump.
>
> Also, I'm not sure how to get opimized diff of the old code since
> patch/diff operate on source not binary filse, the only util I
> saw was XDELTA, but it is still not exactly what I want.
>
> Once I get the string to search in running kernel and the string
> to replace with, how I would do that? /proc/kcore ? any utils to do
> that?
>
> Comments
>
> -Adam
> Hoping to avoid to have reboot his box.
>
>
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