diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index e85b4c7c36f7139bc20a7bcb3138ac4edb654acd..cab26f301eab5caed62b1a3dcf8c4c7896b23d8b 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -1171,6 +1171,7 @@ void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes)
 			 * and zap two pdes instead of one.
 			 */
 			if (level == PT32_ROOT_LEVEL) {
+				page_offset &= ~7; /* kill rounding error */
 				page_offset <<= 1;
 				npte = 2;
 			}