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| author | Wen Yang <wen.yang99@zte.com.cn> | 2019-07-06 12:23:41 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-08 16:33:02 -0700 |
| commit | faf5577f2498cea23011b5c785ef853ded22700b (patch) | |
| tree | 5162b739231084150838b811d977268af58b1761 /drivers/net/ethernet/pasemi | |
| parent | ef86ea982bb5a31cda1f2989b6e477bb53a1031b (diff) | |
| download | lwn-faf5577f2498cea23011b5c785ef853ded22700b.tar.gz lwn-faf5577f2498cea23011b5c785ef853ded22700b.zip | |
net: pasemi: fix an use-after-free in pasemi_mac_phy_init()
The phy_dn variable is still being used in of_phy_connect() after the
of_node_put() call, which may result in use-after-free.
Fixes: 1dd2d06c0459 ("net: Rework pasemi_mac driver to use of_mdio infrastructure")
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/pasemi')
| -rw-r--r-- | drivers/net/ethernet/pasemi/pasemi_mac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.c b/drivers/net/ethernet/pasemi/pasemi_mac.c index bf5a7bca0298..be6660128b55 100644 --- a/drivers/net/ethernet/pasemi/pasemi_mac.c +++ b/drivers/net/ethernet/pasemi/pasemi_mac.c @@ -1042,7 +1042,6 @@ static int pasemi_mac_phy_init(struct net_device *dev) dn = pci_device_to_OF_node(mac->pdev); phy_dn = of_parse_phandle(dn, "phy-handle", 0); - of_node_put(phy_dn); mac->link = 0; mac->speed = 0; @@ -1051,6 +1050,7 @@ static int pasemi_mac_phy_init(struct net_device *dev) phydev = of_phy_connect(dev, phy_dn, &pasemi_adjust_link, 0, PHY_INTERFACE_MODE_SGMII); + of_node_put(phy_dn); if (!phydev) { printk(KERN_ERR "%s: Could not attach to phy\n", dev->name); return -ENODEV; |