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Eric Dumazet c86085585d 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 17:19:51 +00:00
..
Kconfig net: ptp: create a mock-up PTP Hardware Clock driver 2023-08-09 15:59:21 -07:00
Makefile net: ptp: create a mock-up PTP Hardware Clock driver 2023-08-09 15:59:21 -07:00
ptp_chardev.c ptp: annotate data-race around q->head and q->tail 2023-11-28 17:19:51 +00:00
ptp_clock.c ptp: annotate data-race around q->head and q->tail 2023-11-28 17:19:51 +00:00
ptp_clockmatrix.c ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback 2023-06-20 09:02:33 +01:00
ptp_clockmatrix.h ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback 2023-06-20 09:02:33 +01:00
ptp_dfl_tod.c ptp: add ToD device driver for Intel FPGA cards 2023-03-29 21:25:48 -07:00
ptp_dte.c
…
ptp_idt82p33.c ptp: idt82p33: Add .getmaxphase ptp_clock_info callback 2023-06-20 09:02:33 +01:00
ptp_idt82p33.h ptp: idt82p33: Add .getmaxphase ptp_clock_info callback 2023-06-20 09:02:33 +01:00
ptp_ines.c
…
ptp_kvm_arm.c ptp: kvm: Use decrypted memory in confidential guest on x86 2023-03-17 21:57:52 -07:00
ptp_kvm_common.c ptp: kvm: Use decrypted memory in confidential guest on x86 2023-03-17 21:57:52 -07:00
ptp_kvm_x86.c ptp: kvm: Use decrypted memory in confidential guest on x86 2023-03-17 21:57:52 -07:00
ptp_mock.c net: ptp: create a mock-up PTP Hardware Clock driver 2023-08-09 15:59:21 -07:00
ptp_ocp.c ptp: ocp: Fix error handling in ptp_ocp_device_init 2023-10-02 07:19:22 +01:00
ptp_pch.c
…
ptp_private.h ptp: annotate data-race around q->head and q->tail 2023-11-28 17:19:51 +00:00
ptp_qoriq.c ptp: Explicitly include correct DT includes 2023-07-18 11:27:49 +02:00
ptp_qoriq_debugfs.c
…
ptp_sysfs.c ptp: annotate data-race around q->head and q->tail 2023-11-28 17:19:51 +00:00
ptp_vclock.c
…
ptp_vmw.c
…