sio0: more interrupt-level buffer overflows

Lowell Gilbert freebsd-questions-local at
Sat Nov 19 14:59:38 GMT 2005

Goran Gajic <ggajic at> writes:

> I've been using 6.0-RELEASE for some time now. I have one question
> considering messages I see after hanging up my modem
> connection. Whenever I disconnect from network (killall -9 pppd)  I
> see this message:
> kernel: sio0: 264 more interrupt-level buffer overflows (total 5370)
> I have tried both with nocrtscts and crtscts in /etc/ppp/options
> but with no luck. What is causing this behavior?

Is there some reason you're using -9 instead of one of the signals
recommended by the pppd(8) documentation?  I would expect SIGTERM, for
example, to close a lot more cleanly than SIGKILL...

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