[Bug 273418] [panic] Repeating kernel panic on open(/dev/console)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273418

--- Comment #30 from Eugene Grosbein <eugen@freebsd.org> ---
/etc/newsyslog.conf contains a line:

/var/log/openvpn.log 640  30    *    @T00  J         /var/run/openvpn.pid

So, newsyslogd sends SIGHUP to the openvpn daemon at midnight. Its logs before
panic are lost, but I have its logs for previous midnight when there was no
panic:

Sep 20 00:00:02 slh openvpn[2314]: SIGHUP[hard,] received, process restarting
Sep 20 00:00:02 slh openvpn[2314]: OpenVPN 2.6.5 amd64-portbld-freebsd13.2 [SSL
(OpenSSL)] [LZO] [LZ4] [MH/RECVDA] [AEAD]
Sep 20 00:00:02 slh openvpn[2314]: library versions: OpenSSL 1.1.1u-freebsd  30
May 2023, LZO 2.10
Sep 20 00:00:02 slh openvpn[2314]: Restart pause, 1 second(s)
Sep 20 00:00:03 slh openvpn[2314]: Diffie-Hellman initialized with 2048 bit key
...
Sep 20 00:00:03 slh openvpn[2314]: TUN/TAP device /dev/tun0 opened

Crashdump information points to some kind of entanglement between openvpn/tun0
and syslogd/console but it is beyond my comprehension.

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