]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
tcp: rate limit synflood warnings further
authorWillem de Bruijn <willemb@google.com>
Sun, 9 Sep 2018 23:12:12 +0000 (19:12 -0400)
committerDavid S. Miller <davem@davemloft.net>
Wed, 12 Sep 2018 06:34:20 +0000 (23:34 -0700)
commit0297c1c2eadb5bd996a873b87597af3b91c0d4ba
tree66398fef2588f20e0fad2083b18465089995bb0a
parent2d946e5bcdabc1deef72d01bc92a2801c71d6d8d
tcp: rate limit synflood warnings further

Convert pr_info to net_info_ratelimited to limit the total number of
synflood warnings.

Commit 946cedccbd73 ("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: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_input.c