Re: Ugly rmap NULL ptr deref oopsie on hibernate (was Linux 2.6.34-rc3)

From: KOSAKI Motohiro
Date: Wed Apr 07 2010 - 06:12:49 EST

> Hi Linus,
> On Wed, Apr 7, 2010 at 3:10 AM, Linus Torvalds
> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> > Sounds at least possible. Way more likely than any of the "trivially
> > obvious" code being buggy, or the SLUB layer suddenly having a serious bug
> > that only the new user could trigger.
> I haven't followed the discussion at all but if someone wants to
> investigate that angle more, the most likely suspect are the recent
> per-cpu changes. That said, I'd expect the problem to be more
> widespread if SLUB is to blame here.

Nope. We don't doubt SLUB nor per-cpu anymore. Rik found the bug in his patch.


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