Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-18 19:05:39 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

e1000: ensure to free old tx/rx rings in set_ringparam()

Browse Source 
In 'e1000_set_ringparam()', the tx_ring and rx_ring are updated with new value
and the old tx/rx rings are freed only when the device is up. There are resource
leaks on old tx/rx rings when the device is not up. This bug is reported by COD,
a tool for testing kernel module binaries I am building.

This patch fixes the bug by always calling 'kfree()' on old tx/rx rings in
'e1000_set_ringparam()'.

Signed-off-by: Bo Chen <chenbo@pdx.edu>
Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.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:
Bo Chen 2018-07-23 09:01:30 -07:00 committed by Jeff Kirsher
parent cf1acec008
commit ee400a3f1b
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/intel/e1000/e1000_ethtool.c
View File

@ -624,14 +624,14 @@ static int e1000_set_ringparam(struct net_device *netdev,
adapter->tx_ring = tx_old;
e1000_free_all_rx_resources(adapter);
e1000_free_all_tx_resources(adapter);
kfree(tx_old);
kfree(rx_old);
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;