KVM: ensure that memslot userspace addresses are page-aligned

[safe/jmp/linux-2.6] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index a65baa9..0a0a959 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -715,6 +715,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
                goto out;
        if (mem->guest_phys_addr & (PAGE_SIZE - 1))
                goto out;
+       if (mem->userspace_addr & (PAGE_SIZE - 1))
+               goto out;
        if (mem->slot >= KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
                goto out;
        if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)