| commit | 94f2dc7ad055199e569979f24ef4d5a555d06065 | |
| author | Florian Fainelli <f.fainelli@gmail.com> | |
| Thu, 17 Sep 2020 03:43:09 +0000 (16 20:43 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Sat, 26 Sep 2020 16:03:15 +0000 (26 18:03 +0200) | ||
| tree | 028c6402343768fc4c867cd7a659feeb09eb70d2 | treesnapshot (tar.gz zip) |
| parent | 8b62798220804c303ef624d2c591888d17b18b4c | commitdiff |
net: phy: Avoid NPD upon phy_detach() when driver is unbound
[ Upstream commit c2b727df7caa33876e7066bde090f40001b6d643 ]
If we have unbound the PHY driver prior to calling phy_detach() (often
via phy_disconnect()) then we can cause a NULL pointer de-reference
accessing the driver owner member. The steps to reproduce are:
echo unimac-mdio-0:01 > /sys/class/net/eth0/phydev/driver/unbind
ip link set eth0 down
Fixes: cafe8df8b9bc ("net: phy: Fix lack of reference count on PHY driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit c2b727df7caa33876e7066bde090f40001b6d643 ]
If we have unbound the PHY driver prior to calling phy_detach() (often
via phy_disconnect()) then we can cause a NULL pointer de-reference
accessing the driver owner member. The steps to reproduce are:
echo unimac-mdio-0:01 > /sys/class/net/eth0/phydev/driver/unbind
ip link set eth0 down
Fixes: cafe8df8b9bc ("net: phy: Fix lack of reference count on PHY driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/net/phy/phy_device.c | diffblobblamehistory |