slow system freeze - panic

[Peter Jeremy]

On Thu, 2004-Dec-23 18:01:24 +0100, Benjamin Lutz wrote:
>Well, this is unexpected. I enabled the debugging options as instructed
>(INVARIANT_SUPPORT, INVARIANTS, WITNESS, DDB, GDB), rebooted and then
...
>ioapic0 <Version 1.1> irqs 0-23 on motherboard
>panic: spin lock rm.mutex_mtx not in order list

Hmm.  I can't find that string anywhere in the sources.  Are you sure
"rm.mutex_mtx" is correct?

>KDB: enter: panic
>[thread 0]
>Stopped at      kdb_enter+0x30: leave
>db> ps axl
>Symbol not found

Should be just "ps".  There's no point in this case because the system
panic'd before it finished booting.  Instead, run "trace" and post the
results.

I suggest you read ddb(4) and the developer's handbook URL that I posted.

>db> show witness
>(too much info for me to type (haven't got the serial console running
>yet, I can however not find any mention of an rm mutex)

One option in this case is to take a photo and put it up on the web
somewhere.

-- 
Peter Jeremy