Kuniyuki Iwashima 62e721dee8 tcp: Fix data-races around sysctl_tcp_no_ssthresh_metrics_save.
commit ab1ba21b523ab496b1a4a8e396333b24b0a18f9a upstream.

While reading sysctl_tcp_no_ssthresh_metrics_save, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its readers.

Fixes: 65e6d90168f3 ("net-tcp: Disable TCP ssthresh metrics cache by default")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-03 12:03:45 +02:00
..
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2021-06-29 11:28:21 -07:00
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