tcp: annotate data-races around (tp->write_seq - tp->snd_nxt)

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[ Upstream commit 3a63b3d160 ]

tcp_get_timestamping_opt_stats() intentionally runs lockless, we must
add READ_ONCE() annotations to keep KCSAN happy.

WRITE_ONCE() annotations are already present.

Fixes: e08ab0b377 ("tcp: add bytes not sent to SCM_TIMESTAMPING_OPT_STATS")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260416200319.3608680-14-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2026-04-16 20:03:18 +00:00 • committed by Greg Kroah-Hartman

parent 3471874578

commit e400be22bf

1 changed files with 2 additions and 1 deletions

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net/ipv4/tcp.c

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