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linux/drivers/net/can/spi/mcp251xfd
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Oliver Hartkopp ae64438be1 can: dev: fix skb drop check 
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>
2022-11-07 14:00:27 +01:00
..
Kconfig can: Kconfig: add CONFIG_CAN_RX_OFFLOAD 2022-06-11 17:11:02 +02:00
Makefile can: mcp251xfd: ethtool: add support 2022-03-13 09:45:35 +01:00
mcp251xfd-chip-fifo.c can: mcp251xfd: introduce struct mcp251xfd_tx_ring::nr and ::fifo_nr and make use of it 2022-02-24 08:46:59 +01:00
mcp251xfd-core.c can: mcp251xfd: advertise timestamping capabilities and add ioctl support 2022-07-28 11:44:30 +02:00
mcp251xfd-crc16.c can: mcp251xfd: rename all remaining occurrence to mcp251xfd 2020-09-30 21:55:28 +02:00
mcp251xfd-dump.c can: mcp251xfd: mcp251xfd_dump(): fix comment 2022-07-26 10:43:37 +02:00
mcp251xfd-dump.h can: mcp251xfd: add dev coredump support 2021-03-30 11:14:49 +02:00
mcp251xfd-ethtool.c can: mcp251xfd: advertise timestamping capabilities and add ioctl support 2022-07-28 11:44:30 +02:00
mcp251xfd-ram.c can: mcp251xfd: ram: coalescing support 2022-03-13 09:45:35 +01:00
mcp251xfd-ram.h can: mcp251xfd: ram: coalescing support 2022-03-13 09:45:35 +01:00
mcp251xfd-regmap.c can: mcp251xfd: mcp251xfd_regmap_crc_read(): update workaround broken CRC on TBC register 2022-07-04 12:46:45 +02:00
mcp251xfd-ring.c can: mcp251xfd: add TX IRQ coalescing ethtool support 2022-03-13 09:45:36 +01:00
mcp251xfd-rx.c can: rx-offload: rename can_rx_offload_queue_sorted() -> can_rx_offload_queue_timestamp() 2022-04-19 16:58:04 +02:00
mcp251xfd-tef.c can: mcp251xfd: add TX IRQ coalescing support 2022-03-13 09:45:36 +01:00
mcp251xfd-timestamp.c can: mcp251xfd: mark some instances of struct mcp251xfd_priv as const 2021-08-19 15:07:03 +02:00
mcp251xfd-tx.c can: dev: fix skb drop check 2022-11-07 14:00:27 +01:00
mcp251xfd.h can: mcp251xfd: silence clang's -Wunaligned-access warning 2022-05-19 22:15:51 +02:00