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Gleb Natapov committed a2ac07fe292
Fix NULL dereference in gfn_to_hva_prot() gfn_to_memslot() can return NULL or invalid slot. We need to check slot validity before accessing it. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>