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| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2025-03-10 17:33:53 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2025-03-14 11:47:00 +0300 |
| commit | 80b5f90158d1364cbd80ad82852a757fc0692bf2 (patch) | |
| tree | 24d3095b6f636dfb48c9d5d1432c341ad65358d1 /scripts/generate_rust_analyzer.py | |
| parent | 1d22a122ffb116c3cf78053e812b8b21f8852ee9 (diff) | |
| download | linux-80b5f90158d1364cbd80ad82852a757fc0692bf2.tar.xz | |
can: statistics: use atomic access in hot path
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>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions