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SubjectRe: Panic in reserve_memtype()
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Adding Peter.

Can you push this patch along.

Thanks
Venki

On Mon, 2010-03-01 at 07:11 -0800, Jack Steiner wrote:
> On Wed, Feb 24, 2010 at 04:05:18PM -0600, Jack Steiner wrote:
>
> > >
> > > I guess I found an obvious problem in the code. Can you check whether the
> > > below patch resolves the panic you are seeing.
> > >
> > > Thanks,
> > > Venki
> >
> >
> > Works great!! Thanks...
>
>
> Venki
>
> Were you planning to push this fix upstream? Both the x86 & linux-next tree
> currently fail to boot on EFI-enabled systems because of this bug.
>
> Thanks...
>
>
> --- jack
> >
> >
> > >
> > >
> > > new->type should only change when there is a valid ret_type. Otherwise
> > > requested type and return type should be same.
> > >
> > > Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
> > > ---
> > > arch/x86/mm/pat_rbtree.c | 4 +++-
> > > 1 files changed, 3 insertions(+), 1 deletions(-)
> > >
> > > diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
> > > index e4cd229..58b6de1 100644
> > > --- a/arch/x86/mm/pat_rbtree.c
> > > +++ b/arch/x86/mm/pat_rbtree.c
> > > @@ -223,7 +223,9 @@ int rbt_memtype_check_insert(struct memtype *new, unsigned long *ret_type)
> > > new->type, ret_type);
> > >
> > > if (!err) {
> > > - new->type = *ret_type;
> > > + if (ret_type)
> > > + new->type = *ret_type;
> > > +
> > > memtype_rb_insert(&memtype_rbroot, new);
> > > }
> > > return err;
> > > --
> > > 1.6.0.6




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