tcp: annotate races around tp->urg_data

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tcp_poll() and tcp_ioctl() are reading tp->urg_data without socket lock
owned.

Also, it is faster to first check tp->urg_data in tcp_poll(),
then tp->urg_seq == tp->copied_seq, because tp->urg_seq is
located in a different/cold cache line.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2021-11-15 11:02:43 -08:00 • committed by David S. Miller

parent 0307a0b74b

commit 7b6a893a59

2 changed files with 11 additions and 10 deletions

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17

net/ipv4/tcp.c

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4

net/ipv4/tcp_input.c

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