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Date:      Tue, 30 May 2006 15:52:34 +0200
From:      Michael Ortmann <mortmann@googlemail.com>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: reproduceable kernel panic when trying to use tap0 interface (sparc64)
Message-ID:  <447C4E22.4080900@googlemail.com>
In-Reply-To: <20060530144516.E25073@fledge.watson.org>
References:  <447AAB44.9080402@googlemail.com> <20060530144516.E25073@fledge.watson.org>

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Robert Watson schrieb:

> This sounds like a kernel code alignment bug, which is likely easy to 
> fix. However...

the bug has been fixed (fast!):

http://www.freebsd.org/cgi/query-pr.cgi?pr=sparc64/98084

>> == how to reproduce the kernel panic ==
>>
>> # cat /dev/zero >/dev/tap0
>>
>> tap0: Ethernet address: 00:bd:00:02:10:00
>> panic: trap: memory address not aligned
>> cpuid = 0
>> KDB: enter: panic
>> [thread 449 tid 100044]
>> Stopped at kdb_enter+0x3c: ta %xcc, 1
> 
> 
> Whoops, the gdb stack trace below looks corrupted and/or wrong.  Could 
> you instead provide the output of the "trace" command in DDB?  DDB 
> traces can be more reliable under some circumstances, and more resistant 
> to mistakes such as matching the wrong kernel to the wrong core, gdb 
> bugs, and so on.

ill keep it in mind for the next time, thanks.

regards,
Michael Ortmann



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