From: Benjamin Poirier <bpoirier@suse.com>
Date: Fri, 21 Apr 2017 09:51:31 -0700
Subject: e1000e: Don't return uninitialized stats
Patch-mainline: v4.13-rc1
Git-commit: 24ad2a9209a0bf1ec37fac25a011c98551865abb
References: bug#1034635

Some statistics passed to ethtool are garbage because e1000e_get_stats64()
doesn't write them, for example: tx_heartbeat_errors. This leaks kernel
memory to userspace and confuses users.

Do like ixgbe and use dev_get_stats() which first zeroes out
rtnl_link_stats64.

Fixes: 5944701df90d ("net: remove useless memset's in drivers get_stats64")
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
---
 drivers/net/ethernet/intel/e1000e/ethtool.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -2054,7 +2054,7 @@ static void e1000_get_ethtool_stats(stru
 
 	pm_runtime_get_sync(netdev->dev.parent);
 
-	e1000e_get_stats64(netdev, &net_stats);
+	dev_get_stats(netdev, &net_stats);
 
 	pm_runtime_put_sync(netdev->dev.parent);