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net: dsa: lantiq_gswip: fix use after free in gswip_remove() 

of_node_put(priv->ds->slave_mii_bus->dev.of_node) should be
done before mdiobus_free(priv->ds->slave_mii_bus).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: 0d120dfb5d ("net: dsa: lantiq_gswip: don't use devres for mdiobus")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/1644921768-26477-1-git-send-email-khoroshilov@ispras.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alexey Khoroshilov 2022-02-15 13:42:48 +03:00 committed by Jakub Kicinski
parent 0b0dff5b3b
commit 8c6ae46150
1 changed files with 1 additions and 1 deletions
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2
drivers/net/dsa/lantiq_gswip.c
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@ -2176,8 +2176,8 @@ static int gswip_remove(struct platform_device *pdev)
if (priv->ds->slave_mii_bus) {
mdiobus_unregister(priv->ds->slave_mii_bus);
mdiobus_free(priv->ds->slave_mii_bus);
of_node_put(priv->ds->slave_mii_bus->dev.of_node);
mdiobus_free(priv->ds->slave_mii_bus);
}
for (i = 0; i < priv->num_gphy_fw; i++)