linux-stable/drivers/ptp
Eric Dumazet 7ea0a719e5 ptp: annotate data-race around q->head and q->tail
[ Upstream commit 73bde5a329 ]

As I was working on a syzbot report, I found that KCSAN would
probably complain that reading q->head or q->tail without
barriers could lead to invalid results.

Add corresponding READ_ONCE() and WRITE_ONCE() to avoid
load-store tearing.

Fixes: d94ba80ebb ("ptp: Added a brand new class driver for ptp clocks.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://lore.kernel.org/r/20231109174859.3995880-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 16:50:16 +00:00
..
Kconfig
Makefile
ptp_chardev.c ptp: annotate data-race around q->head and q->tail 2023-11-28 16:50:16 +00:00
ptp_clock.c ptp: annotate data-race around q->head and q->tail 2023-11-28 16:50:16 +00:00
ptp_dte.c
ptp_ixp46x.c
ptp_kvm.c
ptp_pch.c ptp_pch: Load module automatically if ID matches 2021-10-13 10:08:19 +02:00
ptp_private.h ptp: annotate data-race around q->head and q->tail 2023-11-28 16:50:16 +00:00
ptp_qoriq.c ptp_qoriq: fix memory leak in probe() 2023-04-05 11:16:43 +02:00
ptp_qoriq_debugfs.c
ptp_sysfs.c ptp: annotate data-race around q->head and q->tail 2023-11-28 16:50:16 +00:00