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e1000e: Don't return uninitialized stats

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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: 5944701df9 ("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>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Benjamin Poirier 2017-05-17 16:24:13 -04:00 committed by Jeff Kirsher
parent 81e3f64a9b
commit 24ad2a9209
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/intel/e1000e/ethtool.c
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@ -2073,7 +2073,7 @@ static void e1000_get_ethtool_stats(struct net_device *netdev,
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);