https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231099

Carl Ådahl <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #4 from Carl Ådahl <[email protected]> ---
I see this issue (including the same error in the truss log) on 15.0-RELEASE-p4
as well.

It seems to happen when I've killed 'cu' on the client machine and try to
connect again to the serial console.

In my /etc/ttys:
ttyu0   "/usr/libexec/getty std.115200" vt100   onifconsole secure


Seen in dmesg:
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
uart0: console (115200,n,8,1)


This repeats in /var/log/messages after the error starts occurring:
...
Mar 11 12:31:24 vanir init[54351]: getty repeating too quickly on port
/dev/ttyu0, sleeping 30 secs
Mar 11 12:31:54 vanir init[56904]: getty repeating too quickly on port
/dev/ttyu0, sleeping 30 secs
Mar 11 12:32:24 vanir init[58996]: getty repeating too quickly on port
/dev/ttyu0, sleeping 30 secs
Mar 11 12:32:54 vanir init[61388]: getty repeating too quickly on port
/dev/ttyu0, sleeping 30 secs

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