On 11.05.2022 14:38:32, Oliver Hartkopp wrote: > IMO this patch does not work as intended. > > You probably need to revisit every place where can_skb_reserve() is used, > e.g. in raw_sendmsg(). And the loopback for devices that don't support IFF_ECHO: | https://elixir.bootlin.com/linux/latest/source/net/can/af_can.c#L257 Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |