This is a note to let you know that I've just added the patch titled
RDMA/mlx5: Add check for srq max_sge attribute
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-mlx5-add-check-for-srq-max_sge-attribute.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9a8222d1445c08e15411af90d07eecb61b6e7820
Author: Patrisious Haddad <phaddad@xxxxxxxxxx>
Date: Tue May 28 15:52:56 2024 +0300
RDMA/mlx5: Add check for srq max_sge attribute
[ Upstream commit 36ab7ada64caf08f10ee5a114d39964d1f91e81d ]
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>
Link: https://lore.kernel.org/r/277ccc29e8d57bfd53ddeb2ac633f2760cf8cdd0.1716900410.git.leon@xxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
index 191c4ee7db620..dfed4c4321337 100644
--- a/drivers/infiniband/hw/mlx5/srq.c
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -200,17 +200,20 @@ 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;
}
