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| author | Florian Fainelli <f.fainelli@gmail.com> | 2020-09-16 20:43:09 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-17 16:55:35 -0700 |
| commit | c2b727df7caa33876e7066bde090f40001b6d643 (patch) | |
| tree | 2b8fc7d5d78328acf2312d1274cfc28291a0df9b /lib | |
| parent | 19a83d36f9837e8bd27435ebb31564a717a5d15a (diff) | |
net: phy: Avoid NPD upon phy_detach() when driver is unbound
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>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions