From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sven Eckelmann <sven.eckelmann@gmx.de>
Date: Wed, 27 May 2009 19:13:03 +0200
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Subject: Re: [B.A.T.M.A.N.] Debug Malloc Problem
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To: Nathan Wharton <naw@greptar.com>
Cc: b.a.t.m.a.n@open-mesh.net

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On Wednesday 27 May 2009 18:35:42 Nathan Wharton wrote:
> On Wed, May 27, 2009 at 11:21 AM, Nathan Wharton <naw@greptar.com> wrote:
> > On Wed, May 27, 2009 at 11:16 AM, Sven Eckelmann <sven.eckelmann@gmx.de=
>=20
wrote:
> >> Thanks. This is completely unexpecting for a kernel with alignment tra=
p.
> >> The expected result is  "Value: 12389ab 89abcdef". Can you check the
> >> value of /proc/cpu/alignment ? I will look further at it this evening.
> >>
> >> Regards,
> >>        Sven
> >
> > User:  0
> > System:  0
> > Skipped: 0
> > Half:  0
> > Word:  0
> > DWord:  0
> > Multi:  0
> > User faults: 0 (ignored)
Thanks.

> I do get the correct result after echo 2 > /proc/cpu/alignment
Ok, so 100% sure that it is a alignment problem. The kernel fixup is always=
=20
activated and shouldn't create such problems as the page faults you mention=
ed=20
in your first post. Maybe some communication between kernelland and userlan=
d=20
has gone wrong. Can you test batmand with batgat and activated alignment=20
fixup?

Best regards,
	Sven

(Thanks for the link - it is a real nice overview).

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