Re: user-space command "ipcs" seems broken on 2.6.18.1

[Jesper Juhl]

On 30/10/06, Jesper Juhl <jesper.juhl@xxxxxxxxx> wrote:
> On 30/10/06, Metathronius Galabant <m.galabant@xxxxxxxxxxxxxx> wrote:
> > > Can you identify the latest kernel where it works OK?
> >
> > I can't reproduce that behaviour on another SMP machine with the same
> > kernel-config for 2.6.18.1 (only storage and network device drivers
> > differ).
> > The affected one is a production machine I can't use to test, and
> > furthermore the only one I've got of that series.
> >
> Ok, can you then at least tell us what the latest kernel you have used
> that was OK was?
> Just to try and narrow things down a bit.
>
> > Has to wait until the weekend. Any remote clue so I know where to look?
>
> Well, with a simple good/bad test case like you have, the obvious
> thing to do would be to find a resonably new kernel that's good and
> one that's bad and then do a git bisection search to find the exact
> commit that broke things for you. Short of that, narrowing it down to
> a released version, a -rc or -git snapshot is also good.
>
> You could also start browsing through changelogs looking for changes
> to IPC and then try revert patches that look likely. But  git bisect
> is probably a lot easier.
Ohh and btw, testing the latest -rc (and/or -git snapshot) kernel is
also useful, to see if the bug has already been fixed in what is to
become 2.6.19 eventually.

--
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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