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Subject: Re: Regression in IPMI on 4.15.6
To:     minyard@acm.org
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        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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From:   Laura Abbott <labbott@redhat.com>
Message-ID: <a544b6e7-6355-3635-8fc9-688daee403c8@redhat.com>
Date:   Fri, 2 Mar 2018 07:59:38 -0800
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On 03/02/2018 05:46 AM, Corey Minyard wrote:
> On 02/28/2018 01:07 PM, Corey Minyard wrote:
>> On 02/28/2018 08:17 AM, Corey Minyard wrote:
>>> On 02/28/2018 07:53 AM, Corey Minyard wrote:
>>>> On 02/27/2018 05:55 PM, Laura Abbott wrote:
>>>>> Hi,
>>>>>
>>>>> Fedora got a bug report of a crash in IPMI on 4.15.6
>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1549316
>>>>> Unfortunately, it's only a screenshot but it's fairly
>>>>> clear. It looks like a panic in the error handling path
>>>>> in platform_device_unregister. Any ideas?
>>>>>
>>>>
>>>
>>> You may also run into another issue.  You can pull the
>>> individual patch at
>>>
>>> https://github.com/cminyard/linux-ipmi.git c8a1972e77dbe321ce5ce0247056e727234cbaec
>>
>> Actually, it needed a few more tweaks.  Can you do change
>> 426fa6179dae677134dfb37b21d057819418515b
>> instead?  It's "ipmi: Fix some error cleanup issues"
>>
>> I can send you patches, if you like.  If you could test and get back
>> to me, that would be great.
> 
> Laura, have you had a chance to test this?  I'd like to get it in soon,
> if possible.
> 
> Thanks,
> 
> -corey
> 

Sorry, this got missed. I'll ask the reporter to reproduce today.

>>
>> BTW, the IPMI setup in your system is incorrect.  SMBIOS says it's at a
>> memory address, but it's at an I/O address.  And the address given
>> doesn't appear to be a valid address, the value read doesn't appear
>> to be a valid value.
>>
>> -corey
>>
>>>
>>> for that fix.
>>>
>>> -corey
>>>
>>>> Yeah, this is fixed by 174134ac7602 "ipmi_si: Fix error
>>>> handling of platform device" in mainstream.
>>>>
>>>> I guess I need to request a backport of this.
>>>>
>>>> Thanks for reporting.
>>>>
>>>> -corey
>>>>
>>>>
>>>>> Thanks,
>>>>> Laura
>>>>
>>>>
>>>
>>
>