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Date:      Thu, 16 Nov 2000 11:50:25 -0800 (PST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Bernd Walter <ticso@cicely8.cicely.de>
Cc:        freebsd-alpha@FreeBSD.org, Christian Weisgerber <naddy@mips.inka.de>, Andrew Gallatin <gallatin@cs.duke.edu>
Subject:   Re: SMPng stability
Message-ID:  <XFMail.001116115025.jhb@FreeBSD.org>
In-Reply-To: <20001116182212.A11802@cicely8.cicely.de>

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On 16-Nov-00 Bernd Walter wrote:
>>  > there I started an fsck of a scratch partition, wedging the box
>>  > within five seconds or so.
>> 
>> Do you have:
>> 
>> options         DDB
>> options         BREAK_TO_DEBUGGER
>> options         MUTEX_DEBUG
>> options         WITNESS
>> options         WITNESS_DDB
>> 
>> In your config file?   If not, can you try a kernel with those
>> options?
> 
> Use the latest source.
> John had commited something related WITNESS today.
> I got a panic early in the boot which I asume is fixed with his commit:
> 
> [...]
> isa_probe_children: probing PnP devices
> Timecounter "i8254"  frequency 1193182 Hz
> Timecounter "alpha"  frequency 500004746 Hz
> bpf: lo0 attached
> ../../kern/kern_synch.c:608: sleeping with "Giant" locked from
> ../../kern/init_main.c:392
> witness_sleep
> Stopped at      Debugger+0x2c:  ldq     ra,0(sp) <0xfffffc00006739f0>  
> <ra=0xfffffc000054aee0,sp=0xfffffc00006739f0>

This was fixed by the last commit that pushed Giant out of mi_switch().

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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