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Date:      Thu, 24 Nov 2005 10:28:59 +0100
From:      Stefan Bethke <stb@lassitu.de>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        freebsd-current@freebsd.org
Subject:   Re: em interrupt storm
Message-ID:  <858BF11C-E2B4-404B-B502-26AD49F5C962@lassitu.de>
In-Reply-To: <20051124062624.GA15944@xor.obsecurity.org>
References:  <002801c5f081$f01ff200$642a15ac@smiley> <4384F807.6050105@samsco.org> <14BE0E5B-F596-4CB2-8048-07FC275C089F@lassitu.de> <20051124062624.GA15944@xor.obsecurity.org>

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Am 24.11.2005 um 07:26 schrieb Kris Kennaway:

> On Thu, Nov 24, 2005 at 06:24:17AM +0100, Stefan Bethke wrote:
>> Am 24.11.2005 um 00:15 schrieb Scott Long:
>>
>>> I've directly observed it on 7501WV2 and 7520BD2 boards.  I don't
>>> know if it's a problem that will affect other board configurations
>>> or cousin chipsets like the 7505 and 7525.
>>
>> We've got a Tyan i7501 Pro that we have had stability issues with
>> since the beginning.  Is it thinkable that the interrupt masking
>> could lead to a hard lock (no break to debugger possible)?
>
> Sounds like a different problem.  Enable KDB_STOP_NMI in your kernel,
> which should let you break to DDB.

Unfortunatly, no luck: can't break into the debugger with the option  
compiled into the kernel and debug.kdb.stop_cpus_with_nmi=1 set in  
loader.conf either.


Stefan

-- 
Stefan Bethke <stb@lassitu.de>   Fon +49 170 346 0140




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