From: Patrisious Haddad <phaddad@xxxxxxxxxx>
max_sge attribute is passed by the user, and is inserted and used
unchecked, so verify that the value doesn't exceed maximum allowed value
before using it.
Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Patrisious Haddad <phaddad@xxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/srq.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
index a056ea835da5..84be0c3d5699 100644
--- a/drivers/infiniband/hw/mlx5/srq.c
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -199,17 +199,20 @@ int mlx5_ib_create_srq(struct ib_srq *ib_srq,
int err;
struct mlx5_srq_attr in = {};
__u32 max_srq_wqes = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
+ __u32 max_sge_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq) /
+ sizeof(struct mlx5_wqe_data_seg);
if (init_attr->srq_type != IB_SRQT_BASIC &&
init_attr->srq_type != IB_SRQT_XRC &&
init_attr->srq_type != IB_SRQT_TM)
return -EOPNOTSUPP;
- /* Sanity check SRQ size before proceeding */
- if (init_attr->attr.max_wr >= max_srq_wqes) {
- mlx5_ib_dbg(dev, "max_wr %d, cap %d\n",
- init_attr->attr.max_wr,
- max_srq_wqes);
+ /* Sanity check SRQ and sge size before proceeding */
+ if (init_attr->attr.max_wr >= max_srq_wqes ||
+ init_attr->attr.max_sge > max_sge_sz) {
+ mlx5_ib_dbg(dev, "max_wr %d,wr_cap %d,max_sge %d, sge_cap:%d\n",
+ init_attr->attr.max_wr, max_srq_wqes,
+ init_attr->attr.max_sge, max_sge_sz);
return -EINVAL;
}
--
2.45.1
