diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c
index f7c94d54efbe..9a6149e310bb 100644
--- a/arch/s390/kvm/guestdbg.c
+++ b/arch/s390/kvm/guestdbg.c
@@ -184,7 +184,7 @@ static int __import_wp_info(struct kvm_vcpu *vcpu,
 	if (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE)
 		return -EINVAL;
 
-	wp_info->old_data = kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT);
+	wp_info->old_data = kmalloc(wp_info->len, GFP_KERNEL_ACCOUNT);
 	if (!wp_info->old_data)
 		return -ENOMEM;
 	/* try to backup the original value */