Re: [VM/MEMORY-SICKNESS] 2.4.15-pre7 kmem_cache_create invalid opcode

Doug Ledford
2001-11-21T19:07:12Z

Jeff Merkey wrote:

> ----- Original Message -----
> From: <arjan@fenrus.demon.nl>
> To: "Jeff Merkey" <jmerkey@timpanogas.org>
> Cc: <linux-kernel@vger.kernel.org>
> Sent: Wednesday, November 21, 2001 12:49 AM
> Subject: Re: [VM/MEMORY-SICKNESS] 2.4.15-pre7 kmem_cache_create invalid
> opcode
>
>
>
>>In article <003401c1725a$975ad4e0$f5976dcf@nwfs> you wrote:
>>
>>
>>>OK. Cool. Now we are making progress. I think this is a nasty
>>>
> problem.
>
>>>There are numerous RPMs that will build against the kernel tree and be
>>>busted. I would expect an rpm -ba on your DEFAULT kernel in Redhat with
>>>the sources contained in the kernel.rpm files to also be broken unless
>>>someone has done this.
>>>
>>That's why Red Hat ships the kernel-source RPM; you can build external
>>modules against that and it has the "make dep" information for all kernels
>>Red Hat ships for that platform (with a smart "if" that selects the
>>currently running one)........... But note the word "external". You build
>>
> in
>
>>another directory and don't touch the original .config file or tree......
>>Unless you need core changes, that's perfectly possible for almost all
>>modules....
>>
>>
>
> I would anticipate seeing this problem with their kernel source RPM. In
> fact, I do,
> you have to do a make distclean before you can use it because of the way
> their rpm
> script munges all the versioned trees into a tmp area during RPM creation.

This is not true at all. To see what I'm referring to, download the
module build kit from my website (http://people.redhat.com/dledford) and
see how it uses box stock kernel include files from our kernel-source
package to build *all* of the needed modules from one source tree (i386,
i386smp, i386BOOT, i586, i586SMP, i686, i686SMP, i686enterprise).

> There's only
> one source tree (usually the last one they built) and lots of binary rpm
> versions from the
> one tree (i.e. i386, i686, etc.).

If you look in the linux/include/linux/modversions/*.h files, you will
see that the different RPM build package versions have all their symbols
in those files #ifdef'ed so that you get the ones you need to match the
running kernel (or if you trick the rhversion.h file, whichever version
you request, see my Makefile).

> Jeff
>
>
>>Greetings,
>> Arjan van de Ven
>>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
>

--

Doug Ledford <dledford@redhat.com> http://people.redhat.com/dledford
Please check my web site for aic7xxx updates/answers before
e-mailing me about problems