Eric Dumazet 73bde5a329 ptp: annotate data-race around q->head and q->tail ...

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: d94ba80ebbea ("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>

2023-11-13 20:51:37 -08:00

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Kconfig

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Makefile

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ptp_chardev.c

ptp: annotate data-race around q->head and q->tail

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ptp_clock.c

ptp: annotate data-race around q->head and q->tail

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ptp_clockmatrix.c

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ptp_clockmatrix.h

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ptp_dfl_tod.c

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ptp_dte.c

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ptp_idt82p33.c

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ptp_idt82p33.h

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ptp_ines.c

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ptp_kvm_arm.c

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ptp_kvm_common.c

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ptp_kvm_x86.c

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ptp_mock.c

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ptp_ocp.c

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ptp_pch.c

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ptp_private.h

ptp: annotate data-race around q->head and q->tail

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ptp_qoriq_debugfs.c

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ptp_qoriq.c

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ptp_sysfs.c

ptp: annotate data-race around q->head and q->tail

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ptp_vclock.c

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ptp_vmw.c

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