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-rw-r--r--drivers/infiniband/hw/mlx4/srq.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c
index 42ab4a8..12fac1c 100644
--- a/drivers/infiniband/hw/mlx4/srq.c
+++ b/drivers/infiniband/hw/mlx4/srq.c
@@ -297,6 +297,12 @@ int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
break;
}
+ if (unlikely(srq->head == srq->tail)) {
+ err = -ENOMEM;
+ *bad_wr = wr;
+ break;
+ }
+
srq->wrid[srq->head] = wr->wr_id;
next = get_wqe(srq, srq->head);
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