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Date: Tue, 31 Jan 2006 22:23:14 +0100
From: Stefan Kaltenbrunner <mm-mailinglist@madness.at>
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To: Olaf Hering <olh@suse.de>
CC: Andrew Vasquez <andrew.vasquez@qlogic.com>, linux-kernel@vger.kernel.org
Subject: Re: qla2xxx related oops in 2.6.16-rc1
References: <43DA580E.3020100@madness.at> <20060130153435.GC1160@andrew-vasquezs-powerbook-g4-15.local> <20060131100710.GA3039@suse.de>
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Olaf Hering wrote:
>  On Mon, Jan 30, Andrew Vasquez wrote:
> 
> 
>>On Fri, 27 Jan 2006, Stefan Kaltenbrunner wrote:
>>
>>
>>>We hit the following oops in 2.6.16-rc1 during itesting of a
>>>devicemapper based multipath infrastructure.
>>>
>>>The oops happend during heavy io on the devicemapper device and a reboot
>>>of one of the switches the host was directly connected too.
>>>
>>>The host in questions is as Dual Opteron 280 with 16GB ram and two
>>>qla2340 adapters accessing an IBM DS4300 Array.
>>>
>>>Stefan
>>>
>>>Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP:
>>><ffffffff803cc6c6>{_spin_lock+0}
>>>PGD 3ff513067 PUD 3ff514067 PMD 0
>>>Oops: 0002 [1] SMP
>>>CPU 0
>>>Modules linked in: dm_round_robin dm_multipath dm_mod i2c_amd756 qla2300
>>>qla2xxx i2c_core evdev
>>>Pid: 2568, comm: qla2300_1_dpc Not tainted 2.6.16-rc1 #4
>>>RIP: 0010:[<ffffffff803cc6c6>] <ffffffff803cc6c6>{_spin_lock+0}
> 
> 
> This one happens at least since 58b6c58caef7a34eab7ec887288fa495696653e7

After applying Andrews patches I have so far failed to reproduce the
issue again - but I'm not really convinced that it is really gone now
since I could not trigger it very reliably before too ...


Stefan
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