linux-kernel - Re: 2.6.{30,31} x86_64 ahci problem

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Date:	Fri, 25 Sep 2009 14:27:30 +0200
From:	Alexander Huemer <alexander.huemer@....ac.at>
To:	Frans Pop <elendil@...net.nl>
CC:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Tejun Heo <tj@...nel.org>, stable@...nel.org
Subject: Re: 2.6.{30,31} x86_64 ahci problem - irq 23: nobody cared

Frans Pop wrote:
> On Friday 25 September 2009, Alexander Huemer wrote:
>   
>> Alexander Huemer wrote:
>>     
>>> Frans Pop wrote:
>>>       
>>>> On Thursday 24 September 2009, Frans Pop wrote:
>>>>         
>>>>>> error message from .31:
>>>>>>  [157152.418524] irq 23: nobody cared
>>>>>>             
>>>> Looking at the changes in drivers/ata/ahci.c, it might be worth to
>>>> try if reverting the following commit fixes the issue:
>>>>
>>>> commit a5bfc4714b3f01365aef89a92673f2ceb1ccf246
>>>> Author: Tejun Heo <tj@...nel.org>
>>>> Date:   Fri Jan 23 11:31:39 2009 +0900
>>>>
>>>>     ahci: drop intx manipulation on msi enable
>>>>         
>>> i reproduced the issue.
>>>
>>>     [ 3486.747729] Pid: 9573, comm: jc1 Tainted: G        W  2.6.31-gentoo-blackbit #2
>>>     [ 3486.747731] Call Trace:
>>>     [ 3486.747733]  <IRQ>  [<ffffffff81066e3f>] ? __report_bad_irq+0x30/0x7d
>>>     [ 3486.747743]  [<ffffffff81066f93>] ? note_interrupt+0x107/0x170
>>>     [ 3486.747746]  [<ffffffff81067580>] ? handle_fasteoi_irq+0x8a/0xaa
>>>     [ 3486.747750]  [<ffffffff8100d1cf>] ? handle_irq+0x17/0x1d
>>>     [ 3486.747752]  [<ffffffff8100c84b>] ? do_IRQ+0x54/0xb2
>>>     [ 3486.747756]  [<ffffffff8100b6d3>] ? ret_from_intr+0x0/0xa
>>>     [ 3486.747758]  <EOI>
>>>     [ 3486.747759] handlers:
>>>     [ 3486.747761] [<ffffffff813d2a6f>] (ahci_interrupt+0x0/0x426)
>>>     [ 3486.747765] Disabling IRQ #23
>>>
>>> i will report back after a compile run of gcc-4.3.4 with a kernel
>>> without the commit you suggested.
>>>       
>> 4 compilation runs of gcc-4.3.4 finished without the issue re-appearing.
>> it seems like you guessed right, Frans.
>>     
>
> Great. Glad to hear it worked out.
>
>   
>> i also found this:
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commi
>> t;h=31b239ad1ba7225435e13f5afc47e48eb674c0cc i'll report on bugzilla.
>>     
>
> So with the revert already in mainline for .32, the only thing left is for
> that to get included in stable updates for .30 and .31.
>
> Cheers,
> FJP
>   
please see the last comment in [1].
can i do anything else to help ?

thanks again
-alex

[1] http://bugzilla.kernel.org/show_bug.cgi?id=14124
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