Re: [PATCH net] net: phy: micrel: Fix potential shared PHC use-after-free

[Andrew Lunn]

On Sat, Nov 07, 2026 at 02:54:37PM +0800, Guangshuo Li wrote:
> The shared PHC outlives the first PHY's managed pin array and is not
> unregistered before the package data is freed. Subsequent PHC operations
> can therefore access released storage.
> 
> Keep the pins at package scope and select a remaining PHY for register
> access when a member leaves. Unregister the clock before releasing its
> storage on the last member's exit. Pair each member's registration with
> cleanup that also runs on probe failure, and serialize clock access with
> member removal.

You fix looks overly complicated. Ugly.

Try looking at it from a different direction.

.probe() and .remove() should be opposites of each other. What happens
if you do that?

    Andrew

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pw-bot: cr