[PATCH] IB/ipath: don't allow resources to be created with illegal values

Signed-off-by: NRobert Walsh <robert.walsh@qlogic.com>
Signed-off-by: NBryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/infiniband/hw/ipath/ipath_mr.c

@@ -170,6 +170,11 @@ struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
 	int n, m, i;
 	struct ib_mr *ret;
 
+	if (region->length == 0) {
+		ret = ERR_PTR(-EINVAL);
+		goto bail;
+	}
+
 	n = 0;
 	list_for_each_entry(chunk, &region->chunk_list, list)
 		n += chunk->nents;

drivers/infiniband/hw/ipath/ipath_qp.c

@@ -667,6 +667,14 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd,
 		goto bail;
 	}
 
+	if (init_attr->cap.max_send_sge +
+	    init_attr->cap.max_recv_sge +
+	    init_attr->cap.max_send_wr +
+	    init_attr->cap.max_recv_wr == 0) {
+		ret = ERR_PTR(-EINVAL);
+		goto bail;
+	}
+
 	switch (init_attr->qp_type) {
 	case IB_QPT_UC:
 	case IB_QPT_RC:

drivers/infiniband/hw/ipath/ipath_verbs.c

@@ -792,6 +792,17 @@ static struct ib_ah *ipath_create_ah(struct ib_pd *pd,
 		goto bail;
 	}
 
+	if (ah_attr->dlid == 0) {
+		ret = ERR_PTR(-EINVAL);
+		goto bail;
+	}
+
+	if (ah_attr->port_num != 1 ||
+	    ah_attr->port_num > pd->device->phys_port_cnt) {
+		ret = ERR_PTR(-EINVAL);
+		goto bail;
+	}
+
 	ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 	if (!ah) {
 		ret = ERR_PTR(-ENOMEM);