Re: 3.2.0-rc1 panic on PowerPC

On Mon, 2011-11-21 at 12:25 +1100, Benjamin Herrenschmidt wrote:

On Sun, 2011-11-20 at 17:17 -0800, Christian Kujau wrote:

quoted

On Mon, 21 Nov 2011 at 11:58, Benjamin Herrenschmidt wrote:

quoted

I've seen something similar with 3.2-rc2 at cfcfc9ec, unfortunately I
couldn't capture the oops log at the time.

It just happened again today, after heavy CPU & IO load (rsyncing from/to 
external disks on dm-crypt). This time the oops was printed on the screen 
but nothing on netconsole:

http://nerdbynature.de/bits/3.2.0-rc1/oops/oops3m.JPG

It looks like the oops I reported earlier (oops2m.JPG) so I doubt it's a 
random corruption due to hardware issues...?

Yeah it's starting to look like a pattern. Your latest oops looks a lot
like the one I had (though it was with tg3 on the g5), ie, vfs_read ->
driver -> allocator -> crash.

quoted

Any debug or boot options to set in my next kernel build?

Well, you can turn everything on see whether that makes any difference
or finds something a bit more precisely

BTW. SLUB or SLAB ? Mine was SLUB with SLUB_DEBUG enabled (tho the debug
didn't seem to catch anything).

Cheers,
Ben.