Oliver Hartkopp 386c49fe31 can: dev: fix skb drop check ... commit ae64438be1 upstream. In commit a6d190f8c7 ("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element is read even on virtual CAN interfaces that do not create the struct can_priv at startup. This out-of-bounds read may lead to CAN frame drops for virtual CAN interfaces like vcan and vxcan. This patch mainly reverts the original commit and adds a new helper for CAN interface drivers that provide the required information in struct can_priv. Fixes: a6d190f8c7 ("can: skb: drop tx skb if in listen only mode") Reported-by: Dariusz Stojaczyk <Dariusz.Stojaczyk@opensynergy.com> Cc: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Cc: Max Staudt <max@enpas.org> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Acked-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Link: https://lore.kernel.org/all/20221102095431.36831-1-socketcan@hartkopp.net Cc: stable@vger.kernel.org # 6.0.x [mkl: patch pch_can, too] Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-11-16 10:04:12 +01:00
..
dev	can: remove obsolete get_canfd_dlc() macro	2020-11-20 09:43:30 +01:00
platform	can: flexcan: add platform data header	2021-07-25 11:36:29 +02:00
bittiming.h	can: netlink: dump bitrate 0 if can_priv::bittiming.bitrate is -1U	2022-07-03 11:34:24 +02:00
can-ml.h	net: introduce CAN specific pointer in the struct net_device	2021-02-24 14:32:15 -08:00
core.h	can: remove obsolete version strings	2020-10-12 10:06:39 +02:00
dev.h	can: dev: fix skb drop check	2022-11-16 10:04:12 +01:00
length.h	can: length: can_skb_get_frame_len(): introduce function to get data length of frame in data link layer	2021-01-14 08:43:42 +01:00
rx-offload.h	can: rx-offload: rename can_rx_offload_queue_sorted() -> can_rx_offload_queue_timestamp()	2022-04-19 16:58:04 +02:00
skb.h	can: skb: move can_dropped_invalid_skb() and can_skb_headroom_valid() to skb.c	2022-06-11 17:11:02 +02:00