[Bug 264257] [tcp] Panic: Fatal trap 12: page fault while in kernel mode (if_io_tqg_4) - m_copydata ... at /usr/src/sys/kern/uipc_mbuf.c:659

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 11 Jun 2022 18:45:03 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264257

--- Comment #30 from Michael Tuexen <tuexen@freebsd.org> ---
(In reply to iron.udjin from comment #29)
In addition, I would also suggest
options TCPPCAP
That would allow us to see the last n packets in/out per endpoint in the kernel
dump. Just compiling it in does not enable the logging. If we actually want to
do the logging, we need to do something like
sudo syssctl net.inet.tcp.tcp_pcap_packets=10
to store the last 10 packets in each direction. We can see if your system can
handle this, since it use mbufs.

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