Re: [PATCH] device property: set fwnode->secondary to NULL in fwnode_init()

[Sakari Ailus]

On Wed, May 06, 2026 at 01:57:00PM +0200, Bartosz Golaszewski wrote:
> If a firmware node is allocated on the stack (for instance: temporary
> software node whose life-time we control) or on the heap - but using a
> non-zeroing allocation function - and initialized using fwnode_init(),
> its secondary pointer will contain uninitalized memory which likely will
> be neither NULL nor IS_ERR() and so may end up being dereferenced (for
> example: in dev_to_swnode()). Set fwnode->secondary to NULL on
> initialization.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 01bb86b380a3 ("driver core: Add fwnode_init()")
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>

Reviewed-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>

-- 
Sakari Ailus