diff options
| author | Pan Bian <bianpan2016@163.com> | 2018-11-28 10:30:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 11:28:52 +0300 |
| commit | 8a69edb8f7db6908910334399a9829f98163252e (patch) | |
| tree | c42aaa3fc4c43c7e9f7358d83d042a2ca38375e2 /drivers/net/ethernet/hisilicon | |
| parent | 689dee4b72ff02c5e96afee94bac903b7bab5ed0 (diff) | |
| download | linux-8a69edb8f7db6908910334399a9829f98163252e.tar.xz | |
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/net/ethernet/hisilicon')
| -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 0cec06bec63e..c27054b8ce81 100644 --- a/drivers/net/ethernet/hisilicon/hip04_eth.c +++ b/drivers/net/ethernet/hisilicon/hip04_eth.c @@ -914,10 +914,8 @@ 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; |