Re: [PATCH net] net: dsa: sja1105: fix use-after-free after calling of_find_compatible_node, or worse
From: Andrew Lunn <andrew@lunn.ch>
Date: 2021-08-20 17:54:40
3. If dsa_register_switch() fails, we can't defer the probe (because it already succeeded). But I'm not sure if it's a likely error code.
That is not a safe assumption. The tagging driver can be a module, and
not be loaded yet. So we defer probing to allow it to load.
Ethernet switches can be a big graph of parts, not a nice tree of
parts.
Andrew