diff options
| author | Pavel Andrianov <andrianov@ispras.ru> | 2021-03-10 11:10:46 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-10 15:21:33 -0800 |
| commit | 0571a753cb07982cc82f4a5115e0b321da89e1f3 (patch) | |
| tree | f750240bc836f82885e9dbb96e2a3bcd0af8bb21 /drivers | |
| parent | dd4fa1dae9f4847cc1fd78ca468ad69e16e5db3e (diff) | |
net: pxa168_eth: Fix a potential data race in pxa168_eth_remove
pxa168_eth_remove() firstly calls unregister_netdev(),
then cancels a timeout work. unregister_netdev() shuts down a device
interface and removes it from the kernel tables. If the timeout occurs
in parallel, the timeout work (pxa168_eth_tx_timeout_task) performs stop
and open of the device. It may lead to an inconsistent state and memory
leaks.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Pavel Andrianov <andrianov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/marvell/pxa168_eth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c index d1e4d42e497d..3712e1786091 100644 --- a/drivers/net/ethernet/marvell/pxa168_eth.c +++ b/drivers/net/ethernet/marvell/pxa168_eth.c @@ -1544,8 +1544,8 @@ static int pxa168_eth_remove(struct platform_device *pdev) clk_disable_unprepare(pep->clk); mdiobus_unregister(pep->smi_bus); mdiobus_free(pep->smi_bus); - unregister_netdev(dev); cancel_work_sync(&pep->tx_timeout_task); + unregister_netdev(dev); free_netdev(dev); return 0; } |