Fedor Pchelkin cd9c790de2 can: j1939: change j1939_netdev_lock type to mutex ... It turns out access to j1939_can_rx_register() needs to be serialized, otherwise j1939_priv can be corrupted when parallel threads call j1939_netdev_start() and j1939_can_rx_register() fails. This issue is thoroughly covered in other commit which serializes access to j1939_can_rx_register(). Change j1939_netdev_lock type to mutex so that we do not need to remove GFP_KERNEL from can_rx_register(). j1939_netdev_lock seems to be used in normal contexts where mutex usage is not prohibited. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol") Suggested-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru> Tested-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Link: https://lore.kernel.org/r/20230526171910.227615-2-pchelkin@ispras.ru Cc: stable@vger.kernel.org Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>		2023-06-05 08:26:31 +02:00
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j1939	can: j1939: change j1939_netdev_lock type to mutex	2023-06-05 08:26:31 +02:00
af_can.c	net: af_can: remove useless parameter 'err' in 'can_rx_register()'	2022-12-12 11:41:24 +01:00
af_can.h	can: introduce CAN midlayer private and allocate it automatically	2019-09-04 13:29:14 +02:00
bcm.c	can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write	2023-03-27 14:40:45 +02:00
gw.c	can: gw: give feedback on missing CGW_FLAGS_CAN_IIF_TX_OK flag	2023-02-02 15:42:10 +01:00
isotp.c	can: isotp: recvmsg(): allow MSG_CMSG_COMPAT flag	2023-05-15 22:24:46 +02:00
Kconfig	net: Kconfig: move the CAN device menu to the "Device Drivers" section	2022-06-11 17:11:02 +02:00
Makefile	can: add ISO 15765-2:2016 transport protocol	2020-10-07 23:18:33 +02:00
proc.c	proc: remove PDE_DATA() completely	2022-01-22 08:33:37 +02:00
raw.c	can: raw: use temp variable instead of rolling back config	2023-02-08 21:53:24 +01:00