"sleeping without a mutex" panic with FixitCD from today's SNAP

[Harald Schmalzbauer]

Am Samstag, 10. April 2004 21:41 schrieb Dmitry Morozovsky:
> On Sat, 10 Apr 2004, Scott Long wrote:
>
> SL> Cordula's Web wrote:
> SL> >>Trying to boot freshly compiled (via current-on-stable vay, mostly
> described in SL>
> >>http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&c2coff=1&selm
>=20040319034905.GA975%40doom.homeunix.org) SL> >>-current LiveFS CD on three
> different machines (all i686-like, from AMD Duron SL> >>600 on VIA KT133 to
> AthlonXP 2k+ on nVidia nForce2; all with ATACI CD/DVD) I SL> >>got 100%
> reproducible ddb panic after mounting CD with "Fixit" menu item: SL> >>
> SL> >>panic: sleeping without a mutex
> SL> >>at line 144 in file /usr/src/sys/kern/kern_synch.c
> SL> >
> SL> >
> SL> > Same here, while trying to upgrade from 5.2.1-RELEASE to yesterday's
> SL> > and today's -CURRENT. It happens here:
> SL> >
> SL> > # make installkernel KERNCONF=GENERIC
> SL> > # reboot   (in single user mode)
> SL> > # mount -a
> SL> > # mergemaster -p
> SL> > # make installworld
> SL> > <panic: sleeping without a mutex
> SL> > at line 144 in file /usr/src/sys/kern/kern_synch.c>
> SL> >
> SL> > The panic is 100% reproducible.
> SL>
> SL> Providing a backtrace from the debugger here is very important.  Any
> SL> chance that you could do that?

Increadible that nobody has recognized it for that long time. I'll find a 
spare machine tomorrow and do a backtrace (what I know about this is to type 
"trace" after I see the ddb>. Sorry, I'm no programmer, otherwise I'd have 
tried to manifest this several weeks ago.) Please correct me if you need 
something else.
More tomorrow evening, I don't have permission to do things like that at 
work :(

-Harry

>
> My chances are pretty low, as I have no -current systems runnning. I cat
> write ddb's traceback though if it's helpful (supposedly, I also can make
> serial console for that).
>
> Sincerely,
> D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
> ------------------------------------------------------------------------
> *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
> ------------------------------------------------------------------------
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