IB/ipath: do not allow use of CQ entries with invalid counts

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_cq.c b/drivers/infiniband/hw/ipath/ipath_cq.c
index 3c4c198a4514..049221bc590e 100644
--- a/drivers/infiniband/hw/ipath/ipath_cq.c
+++ b/drivers/infiniband/hw/ipath/ipath_cq.c
@@ -172,7 +172,7 @@ struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries,
         struct ipath_cq_wc *wc;
         struct ib_cq *ret;
 
-        if (entries > ib_ipath_max_cqes) {
+        if (entries < 1 || entries > ib_ipath_max_cqes) {
                 ret = ERR_PTR(-EINVAL);
                 goto done;
         }
@@ -324,6 +324,11 @@ int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
         u32 head, tail, n;
         int ret;
 
+        if (cqe < 1 || cqe > ib_ipath_max_cqes) {
+                ret = -EINVAL;
+                goto bail;
+        }
+
         /*
          * Need to use vmalloc() if we want to support large #s of entries.
          */