Patch "IB/mlx4: Check gid_index return value" has been added to the 4.8-stable tree

Patch "IB/mlx4: Check gid_index return value" has been added to the 4.8-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    IB/mlx4: Check gid_index return value

to the 4.8-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:
     ib-mlx4-check-gid_index-return-value.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 37995116fecfce2b61ee3da6e73b3e394c6818f9 Mon Sep 17 00:00:00 2001
From: Daniel Jurgens <danielj@mellanox.com>
Date: Thu, 10 Nov 2016 11:30:54 +0200
Subject: IB/mlx4: Check gid_index return value

From: Daniel Jurgens <danielj@mellanox.com>

commit 37995116fecfce2b61ee3da6e73b3e394c6818f9 upstream.

Check the returned GID index value and return an error if it is invalid.

Fixes: 5070cd2239bd ('IB/mlx4: Replace mechanism for RoCE GID management')
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/hw/mlx4/ah.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx4/ah.c
+++ b/drivers/infiniband/hw/mlx4/ah.c
@@ -102,7 +102,10 @@ static struct ib_ah *create_iboe_ah(stru
 	if (vlan_tag < 0x1000)
 		vlan_tag |= (ah_attr->sl & 7) << 13;
 	ah->av.eth.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
-	ah->av.eth.gid_index = mlx4_ib_gid_index_to_real_index(ibdev, ah_attr->port_num, ah_attr->grh.sgid_index);
+	ret = mlx4_ib_gid_index_to_real_index(ibdev, ah_attr->port_num, ah_attr->grh.sgid_index);
+	if (ret < 0)
+		return ERR_PTR(ret);
+	ah->av.eth.gid_index = ret;
 	ah->av.eth.vlan = cpu_to_be16(vlan_tag);
 	ah->av.eth.hop_limit = ah_attr->grh.hop_limit;
 	if (ah_attr->static_rate) {


Patches currently in stable-queue which might be from danielj@mellanox.com are

queue-4.8/ib-mlx5-use-cache-line-size-to-select-cqe-stride.patch
queue-4.8/ib-mlx4-check-gid_index-return-value.patch
queue-4.8/ib-mlx4-fix-create-cq-error-flow.patch