diff options
| author | Pan Bian <bianpan2016@163.com> | 2018-11-28 15:30:24 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 21:55:11 +0100 |
| commit | 573f19f1517bee0dd16ebf629c0746a2dfc20461 (patch) | |
| tree | a468ccda0eee913a047ba96f95d72415a10f0c1f /drivers | |
| parent | 553c8675f5fea8c9fbf178c3a2187a2423b4af38 (diff) | |
net: hisilicon: remove unexpected free_netdev
[ Upstream commit c758940158bf29fe14e9d0f89d5848f227b48134 ]
The net device ndev is freed via free_netdev when failing to register
the device. The control flow then jumps to the error handling code
block. ndev is used and freed again. Resulting in a use-after-free bug.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hip04_eth.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c index 253f8ed0537a..60c727b0b7ab 100644 --- a/drivers/net/ethernet/hisilicon/hip04_eth.c +++ b/drivers/net/ethernet/hisilicon/hip04_eth.c @@ -919,10 +919,8 @@ static int hip04_mac_probe(struct platform_device *pdev) } ret = register_netdev(ndev); - if (ret) { - free_netdev(ndev); + if (ret) goto alloc_fail; - } return 0; |