On Wed, Dec 14, 2022 at 01:39:53PM -0600, Michael Roth wrote: > From: Nikunj A Dadhania <nikunj@xxxxxxx> > > Aligned end boundary causes a kvm crash, handle the case. > Link: https://lore.kernel.org/kvm/20221202061347.1070246-8-chao.p.peng@xxxxxxxxxxxxxxx/ Chao, are you aware of this issue already? > Signed-off-by: Nikunj A Dadhania <nikunj@xxxxxxx> > Signed-off-by: Michael Roth <michael.roth@xxxxxxx> > --- > arch/x86/kvm/mmu/mmu.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c > index b1953ebc012e..b3ffc61c668c 100644 > --- a/arch/x86/kvm/mmu/mmu.c > +++ b/arch/x86/kvm/mmu/mmu.c > @@ -7159,6 +7159,9 @@ static void kvm_update_lpage_private_shared_mixed(struct kvm *kvm, > for (gfn = first + pages; gfn < last; gfn += pages) > linfo_set_mixed(gfn, slot, level, false); > > + if (gfn == last) > + goto out; > + > gfn = last; > gfn_end = min(last + pages, slot->base_gfn + slot->npages); > mixed = mem_attrs_mixed(kvm, slot, level, attrs, gfn, gfn_end); > -- > 2.25.1 > BR, Jarkko
