On 02/15/2017 08:56, Mark Martinec wrote:
In a similar vein, I noticed also the following in our logs,
with net.inet.tcp.log_in_vain=1.
Looks like messages got concatenated somehow:
Jan 25 01:37:53 mildred kernel: TCP: [2607:ff10:c5:509a::10]:26459 to
[2001:1470:ff80::80:16]:4911 tcpflags 0x2<SYN>; tcp_input: Connection attempt to
closed TCP: [2607:ff10:c5:509a::10]:14898 to [2001:1470:ff80::80:16]:5222
tcpflags 0x2<SYN>; tcp_input: Connection attempt to closed port
The length of the truncated "TCP:...closed" message is just under 128, which is
the PRINTF_BUFR_SIZE as defined in sys/amd64/conf/GENERIC. You could try
increasing this value and rebuilding your kernel to see if that fixes the
truncation. Don't increase it very much, since it's used to declare a buffer on
the stack, and stack space is quite limited. For this case, 180 should be enough.
Eric
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