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Oliver Hartkopp 051be169fb can: statistics: use atomic access in hot path ... [ Upstream commit 80b5f90158 ] In can_send() and can_receive() CAN messages and CAN filter matches are counted to be visible in the CAN procfs files. KCSAN detected a data race within can_send() when two CAN frames have been generated by a timer event writing to the same CAN netdevice at the same time. Use atomic operations to access the statistics in the hot path to fix the KCSAN complaint. Reported-by: syzbot+78ce4489b812515d5e4d@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/67cd717d.050a0220.e1a89.0006.GAE@google.com Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Link: https://patch.msgid.link/20250310143353.3242-1-socketcan@hartkopp.net Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2025-04-10 14:32:03 +02:00
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j1939	can: j1939: j1939_sk_send_loop(): fix unable to send messages with data length zero	2025-03-13 12:50:40 +01:00
af_can.c	can: statistics: use atomic access in hot path	2025-04-10 14:32:03 +02:00
af_can.h	can: statistics: use atomic access in hot path	2025-04-10 14:32:03 +02:00
bcm.c	can: bcm: Clear bo->bcm_proc_read after remove_proc_entry().	2024-10-17 15:10:46 +02:00
gw.c	can: gw: synchronize rcu operations before removing gw job entry	2021-06-19 23:53:43 +02:00
isotp.c	can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior	2023-11-08 17:26:49 +01:00
Kconfig	net: remove redundant 'depends on NET'	2021-01-27 17:04:12 -08:00
Makefile	can: add ISO 15765-2:2016 transport protocol	2020-10-07 23:18:33 +02:00
proc.c	can: statistics: use atomic access in hot path	2025-04-10 14:32:03 +02:00
raw.c	can: raw: add support for SO_MARK	2024-01-15 18:51:14 +01:00