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tcp: rate limit synflood warnings further
Convert pr_info to net_info_ratelimited to limit the total number of synflood warnings. Commit 946cedcc ("tcp: Change possible SYN flooding messages") rate limits synflood warnings to one per listener. Workloads that open many listener sockets can still see a high rate of log messages. Syzkaller is one frequent example. Signed-off-by: NWillem de Bruijn <willemb@google.com> Signed-off-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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