Patch "net/mlx4_core: Fix wrong index in propagating port change event to VFs" has been added to the 4.1-stable tree

Patch "net/mlx4_core: Fix wrong index in propagating port change event to VFs" has been added to the 4.1-stable tree

[gregkh]

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

    net/mlx4_core: Fix wrong index in propagating port change event to VFs

to the 4.1-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:
     net-mlx4_core-fix-wrong-index-in-propagating-port-change-event-to-vfs.patch
and it can be found in the queue-4.1 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 foo@baz Sat Sep 26 11:13:07 PDT 2015
From: Jack Morgenstein <jackm@dev.mellanox.co.il>
Date: Wed, 22 Jul 2015 16:53:47 +0300
Subject: net/mlx4_core: Fix wrong index in propagating port change event to VFs

From: Jack Morgenstein <jackm@dev.mellanox.co.il>

[ Upstream commit 1c1bf34951e8d17941bf708d1901c47e81b15d55 ]

The port-change event processing in procedure mlx4_eq_int() uses "slave"
as the vf_oper array index. Since the value of "slave" is the PF function
index, the result is that the PF link state is used for deciding to
propagate the event for all the VFs. The VF link state should be used,
so the VF function index should be used here.

Fixes: 948e306d7d64 ('net/mlx4: Add VF link state support')
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx4/eq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -573,7 +573,7 @@ static int mlx4_eq_int(struct mlx4_dev *
 							continue;
 						mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN to slave: %d, port:%d\n",
 							 __func__, i, port);
-						s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
+						s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
 						if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) {
 							eqe->event.port_change.port =
 								cpu_to_be32(
@@ -608,7 +608,7 @@ static int mlx4_eq_int(struct mlx4_dev *
 							continue;
 						if (i == mlx4_master_func_num(dev))
 							continue;
-						s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
+						s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
 						if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) {
 							eqe->event.port_change.port =
 								cpu_to_be32(


Patches currently in stable-queue which might be from jackm@dev.mellanox.co.il are

queue-4.1/ib-mlx4-fix-potential-deadlock-when-sending-mad-to-wire.patch
queue-4.1/net-mlx4_core-fix-wrong-index-in-propagating-port-change-event-to-vfs.patch
queue-4.1/ib-mlx4-forbid-using-sysfs-to-change-roce-pkeys.patch