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e1000: fix memory leaks

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[ Upstream commit 8472ba62154058b64ebb83d5f57259a352d28697 ]

In e1000_set_ringparam(), 'tx_old' and 'rx_old' are not deallocated if
e1000_up() fails, leading to memory leaks. Refactor the code to fix this
issue.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wenwen Wang 2019-08-12 00:59:21 -05:00 committed by Greg Kroah-Hartman
parent 4701d19f3e
commit f69f2d6119
1 changed files with 3 additions and 4 deletions
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7
drivers/net/ethernet/intel/e1000/e1000_ethtool.c
View File

@ -627,6 +627,7 @@ static int e1000_set_ringparam(struct net_device *netdev,
for (i = 0; i < adapter->num_rx_queues; i++)
rxdr[i].count = rxdr->count;
err = 0;
if (netif_running(adapter->netdev)) {
/* Try to get new resources before deleting old */
err = e1000_setup_all_rx_resources(adapter);
@ -647,14 +648,13 @@ static int e1000_set_ringparam(struct net_device *netdev,
adapter->rx_ring = rxdr;
adapter->tx_ring = txdr;
err = e1000_up(adapter);
if (err)
goto err_setup;
}
kfree(tx_old);
kfree(rx_old);
clear_bit(__E1000_RESETTING, &adapter->flags);
return 0;
return err;
err_setup_tx:
e1000_free_all_rx_resources(adapter);
err_setup_rx:
@ -666,7 +666,6 @@ err_alloc_rx:
err_alloc_tx:
if (netif_running(adapter->netdev))
e1000_up(adapter);
err_setup:
clear_bit(__E1000_RESETTING, &adapter->flags);
return err;
}