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Date:	Sun, 10 Feb 2008 18:25:39 +0100 (CET)
From:	Krzysztof Oledzki <>
To:	Maximilian Wilhelm <>
Subject: Re: Kernel Panic in MPT SAS on 2.6.24 (and,

On Sun, 10 Feb 2008, Maximilian Wilhelm wrote:

> Am Friday, den  8 February hub Maximilian Wilhelm folgendes in die Tasten:
>> Just noticed that Eric's address was wrong, so resend with corrected Cc.
>> Eric, my intial report was
>>> Am Thursday, den  7 February hub Krzysztof Oledzki folgendes in die Tasten:
>>> Hi!
>>>>> While installing my new firewall I got the following kernel panic in
>>>>> the MPT SAS driver which I need for the disks.
>>>>> The first kernel I bootet was which did panic so I tried a
>>>>> 2.6.24 which panics, too. Our usual FAI kernel ( is also
>>>>> affected.
>>>> Could you please try 2.6.22-stable?
>>> Yes it works :-/
>>> I've put some things which on the web which might be helpful:
>>> dmesg
>>> lspci -v
>>> .config
>>> I'll search for the last working kernel and try to break it down to a
>>> commit tommorow when I can get a serial console or direct access.
>>> The Java driven console redirection is everything else than fulfilling :-(
>>>> It looks *very* similar to my problem:
>>> It seems to be the same controller:
>>> 01:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS (rev 08)
>>> 	Subsystem: Dell Unknown device 1f10
>>> 	Flags: bus master, fast devsel, latency 0, IRQ 16
>>> 	I/O ports at ec00 [size=256]
>>> 	Memory at fc8fc000 (64-bit, non-prefetchable) [size=16K]
>>> 	Memory at fc8e0000 (64-bit, non-prefetchable) [size=64K]
>>> 	Expansion ROM at fc900000 [disabled] [size=1M]
>>> 	Capabilities: [50] Power Management version 2
>>> 	Capabilities: [68] Express Endpoint IRQ 0
>>> 	Capabilities: [98] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
>>> 	Capabilities: [b0] MSI-X: Enable- Mask- TabSize=1
> I did a git bisect between v2.6.22 v2.6.23 and it seems that
>  6cb8f91320d3e720351c21741da795fed580b21b
> introduced some badness.

Thanks! This was *really* useful!

Now, how about attached patch? Should work with both 2.6.23 and 2.6.24.

Best regards,

 				Krzysztof Olędzki
View attachment "scsi-mpt-fusion-dont-oops-if-NumPhys-0.patch" of type "TEXT/PLAIN" (729 bytes)

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