Patch "net: ethtool: Initialize buffer when querying device channel settings" has been added to the 4.9-stable tree

Patch "net: ethtool: Initialize buffer when querying device channel settings" has been added to the 4.9-stable tree

[gregkh]

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

    net: ethtool: Initialize buffer when querying device channel settings

to the 4.9-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-ethtool-initialize-buffer-when-querying-device-channel-settings.patch
and it can be found in the queue-4.9 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 Mon Jul  3 11:54:13 CEST 2017
From: Eran Ben Elisha <eranbe@mellanox.com>
Date: Tue, 17 Jan 2017 19:19:17 +0200
Subject: net: ethtool: Initialize buffer when querying device channel settings

From: Eran Ben Elisha <eranbe@mellanox.com>


[ Upstream commit 31a86d137219373c3222ca5f4f912e9a4d8065bb ]

Ethtool channels respond struct was uninitialized when querying device
channel boundaries settings. As a result, unreported fields by the driver
hold garbage.  This may cause sending unsupported params to driver.

Fixes: 8bf368620486 ('ethtool: ensure channel counts are within bounds ...')
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
CC: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/core/ethtool.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1704,7 +1704,7 @@ static noinline_for_stack int ethtool_ge
 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
 						   void __user *useraddr)
 {
-	struct ethtool_channels channels, max;
+	struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
 	u32 max_rx_in_use = 0;
 
 	if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)


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

queue-4.9/net-ethtool-initialize-buffer-when-querying-device-channel-settings.patch