Fix possible NULL pointer access in 8250 serial driver

[linux-2.6-omap-h63xx.git] / drivers / kvm / mmu.c

diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index e85b4c7c36f7139bc20a7bcb3138ac4edb654acd..cab26f301eab5caed62b1a3dcf8c4c7896b23d8b 100644 (file)
--- 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;
                        }