Re: [Powerpc/SLQB] Next June 06 : BUG during scsi initialization

From: Sachin Sant <sachinp@in.ibm.com>
To: Nick Piggin <npiggin@suse.de>
Cc: Pekka J Enberg <penberg@cs.helsinki.fi>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	linux-next@vger.kernel.org, linuxppc-dev@ozlabs.org
Subject: Re: [Powerpc/SLQB] Next June 06 : BUG during scsi initialization
Date: Fri, 12 Jun 2009 11:14:10 +0530	[thread overview]
Message-ID: <4A31EB2A.9080003@in.ibm.com> (raw)
In-Reply-To: <20090609141903.GE15219@wotan.suse.de>

Nick Piggin wrote:
> I can't really work it out. It seems to be the kmem_cache_cache which has
> a problem, but there have already been lots of caches created and even
> this samw cache_node already used right beforehand with no problem.
>
> Unless a CPU or node comes up or something right at this point or the
> caller is scheduled onto a different CPU... oopses seem to all
> have CPU#1, wheras boot CPU is probably #0 (these CPUs are node 0
> and memory is only on node 1 and 2 where there are no CPUs if I read
> correctly).
>
> I still can't see the reason for the failure, but can you try this
> patch please and show dmesg?
I was able to boot yesterday's next (20090611) on this machine. Not sure
what changed(may be because of merge with linus tree), but i can no longer
recreate this issue with next 20090611. I was consistently able to
recreate the problem till June 10th next tree.

Thanks
-Sachin

-- 

---------------------------------
Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
---------------------------------