Interrupt (SCSI?) hang on 4.x
jhb at freebsd.org
Thu Jan 11 11:20:11 PST 2007
On Tuesday 02 January 2007 10:36, Jeremy Chadwick wrote:
> Yes, I know 4.11 is EOL'd at the end of this month, but hopefully
> someone can shed some light on this problem anyways. I simply don't
> have the knowledge of what's going on on a low-level to determine
> the cause.
> I do have serial console on this box, and after enabling some
> debugging for the ahc(4) driver a few months back, was able to
> get something intelligent out of the system regarding SCBs this
> morning. This may not be useful (or the cause), though. I also
> cannot enable drop-to-DDB-on-serial-break because our Portmaster 2
> has been known to send a serial break on rare occasion. :-(
> Every so often (sometimes hours, sometimes months -- usually months),
> the 4.11 box we have "locks up" in the sense that both NICs on the
> box stop working, and the SCSI controller also appears hung. This
> problem has existed for a couple years; it's not specific to 4.11
> (versus 4.10 or 4.9).
Can you try a RELENG_4 kernel? I know of at least one fix (in
sys/i386/isa/clock.c) since 4.11 was released that might help you out.
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