Re: [PATCH v2] can: etas_es58x: fix error handling

From: Pavel Skripkin
Date: Mon Nov 15 2021 - 03:15:36 EST


On 11/15/21 11:11, Johan Hovold wrote:
Just a drive-by comment:

Are you sure about this move of the netdev[channel_idx] initialisation?
What happens if the registered can device is opened before you
initialise the pointer? NULL-deref in es58x_send_msg()?

You generally want the driver data fully initialised before you register
the device so this looks broken.

And either way it is arguably an unrelated change that should go in a
separate patch explaining why it is needed and safe.



It was suggested by Vincent who is the maintainer of this driver [1].



[1] https://lore.kernel.org/linux-can/CAMZ6Rq+orfUuUCCgeWyGc7P0vp3t-yjf_g9H=Jhk43f1zXGfDQ@xxxxxxxxxxxxxx/



With regards,
Pavel Skripkin