On Wed, 7 Mar 2007, Benjamin Herrenschmidt wrote:
> On Tue, 2007-03-06 at 20:59 -0800, Linus Torvalds wrote:
> > Linus Torvalds (2):
> >       Revert "[PATCH] LOG2: Alter get_order() so that it can make use of 
> > ilog2() on a constant"
> >       Linux 2.6.21-rc3
> Greg, I think we should revert that patch in 2.6.20.x stable serie too
> as get_order is broken there as well, causing random kernel memory
> corruption every now and then among others.

Did you confirm that that was indeed the cause of the problem you saw?

As far as I can tell, the bug (because it tested the wrong #define) would 
only affect the constant-size case, and only for something larger than a 
single page, and only for a non-power-of-two size. So it looked fairly 
hard to trigger, if only because all the obvious constants I saw seemed 
to already be powers-of-two..

So did you hunt it down to a particular cases where it triggers?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to