[OpenAFS-devel] Re: System lockup with do_IRQ: stack overflow (SOMEWHAT RESOLVED)

[Axel Thimm]

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On Mon, Feb 26, 2007 at 04:51:54PM +1100, Deon George wrote:
> Gang,
>=20
> I was under the suspicion that it was the atrpm build of the openafs=20
> kernel module that was causing my systems to lock up with do_IRQ: stack=
=20
> overflow.
>=20
> To test this, I removed the openafs kernel module on my FC6 system=20
> (which was sourced from atrpms) and built the openafs 1.4.2 module=20
> myself (rpmbuild --rebuild openafs-1.4.2-rhel4.1.src.rpm --define=20
> "build_modules 1") . I've been hammering the machine all day with the=20
> new module and it hasnt missed a beat. :) I've only been testing for a=20
> few hours - but it is a good sign - the machine would normally lockup=20
> within a few minutes...
>=20
> I want to do the same thing to my RHEL5 system (to be absolutely sure=20
> that it is atrpms compilation that is my problem) - but I cant get the=20
> kernel module to build - the build keeps failing with:
>=20
> FATAL: modpost: GPL-incompatible module openafs.ko uses GPL-only symbol=
=20
> 'tasklist_lock'
>=20
> I've tried both 1.4.2 and 1.4.3rc2 - without success...
>=20
> Axel, I dont know why your openafs kmdl is causing my lockup

The ATrpms packages are rather pristine 1.4.2 sources. Perhaps the
openafs-1.4.2-rhel4.1.src.rpm package has some fixes? Could you try
building from source?

> - I tried rebuilding your src.rpm, but I guess I need some configs
> or something, as the rpmbuild --rebuild failed with a "%kmdl error"
> (cant remember the actual message). But I thought you might like to
> know anyway.

Check Paulo's docu at http://people.atrpms.net/~pcavalcanti/.

But I don't think a rebuild would yield different results.

> For your reference, I'm running a:
> AMD Athlon(tm) 64 Processor 3000+ with 32bit RHEL5 (and 32bit FC6). The=
=20
> openafs components I have installed from your site are:
> openafs-1.4.2-20.el4.92.at
> openafs-kmdl-2.6.18-1.2747.el5-1.4.2-20.el4.92.at
> openafs-client-1.4.2-20.el4.92.at
> openafs-server-1.4.2-20.el4.92.at
>=20
> The server is fine - its the client that causes the lockup.
--=20
Axel.Thimm at ATrpms.net

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