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SubjectRe: [BUG 2.6.29] NMI watchdog triggered in rb_insert_color called from enqueue_hrtimer

* Mikael Pettersson <mikpe@it.uu.se> wrote:

> Mikael Pettersson writes:
> > Ingo Molnar writes:
> > >
> > > * Mikael Pettersson <mikpe@it.uu.se> wrote:
> > >
> > > > Less than an hour after updating a dual Opteron 8384 box from
> > > > 2.6.29-rc6 (which it had been running for weeks) to 2.6.29 final
> > > > it died with the following watchdog-detected lockup:
> > >
> > > Could you please check whether this is the bug fixed by:
> > >
> > > 7f1e2ca: hrtimer: fix rq->lock inversion (again)
> >
> > I am testing this now and will let you know how it goes.
>
> The machine has now been running 2.6.29 plus that fix for more
> than 24 hours with no problems. Previously it oopsed and hung
> within an hour on two separate attempts to run 2.6.29 vanilla.

ok, thanks for testing. The fix is now upstream:

7f1e2ca: hrtimer: fix rq->lock inversion (again)

-stable team, please pick it up - i just checked, it cherry-picks
fine on v2.6.29.

Ingo


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