linux-kernel - Re: [6.1.y] Regression from b1e6e80a1b42 ("xen/swiotlb: add alignment check for dma buffers") when booting with Xen and mpt3sas_cm0 _scsih

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <e01c39ad-6f5e-449a-b24a-db3b7984030e@oracle.com>
Date: Fri, 28 Feb 2025 13:50:12 +0530
From: Harshvardhan Jha <harshvardhan.j.jha@...cle.com>
To: Greg KH <gregkh@...uxfoundation.org>,
        Jürgen Groß
 <jgross@...e.com>
Cc: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>,
        Salvatore Bonaccorso <carnil@...ian.org>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Sasha Levin
 <sashal@...nel.org>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
        xen-devel@...ts.xenproject.org, iommu@...ts.linux.dev,
        Radoslav Bodó <radoslav.bodo@...lileo.cz>,
        regressions@...ts.linux.dev, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: Re: [6.1.y] Regression from b1e6e80a1b42 ("xen/swiotlb: add alignment
 check for dma buffers") when booting with Xen and mpt3sas_cm0 _scsih_probe
 failures


On 15/02/25 8:25 PM, Greg KH wrote:
> On Sat, Feb 15, 2025 at 02:39:46PM +0100, Jürgen Groß wrote:
>> On 15.02.25 13:34, Greg KH wrote:
>>> On Sat, Feb 15, 2025 at 12:47:57PM +0100, Jürgen Groß wrote:
>>>> On 12.02.25 16:12, Harshit Mogalapalli wrote:
>>>>> Hi Salvatore,
>>>>>
>>>>> On 12/02/25 00:56, Salvatore Bonaccorso wrote:
>>>>>> Hi Harshit,
>>>>>>
>>>>>> On Sun, Feb 09, 2025 at 01:45:38AM +0530, Harshit Mogalapalli wrote:
>>>>>>> Hi Salvatore,
>>>>>>>
>>>>>>> On 08/02/25 21:26, Salvatore Bonaccorso wrote:
>>>>>>>> Hi Juergen, hi all,
>>>>>>>>
>>>>>>>> Radoslav Bodó reported in Debian an issue after updating our kernel
>>>>>>>> from 6.1.112 to 6.1.115. His report in full is at:
>>>>>>>>
>>>>>>>> https://bugs.debian.org/1088159
>>>>>>>>
>>>>>>> Note:
>>>>>>> We have seen this on 5.4.y kernel: More details here:
>>>>>>> https://lore.kernel.org/all/9dd91f6e-1c66-4961-994e-dbda87d69dad@oracle.com/
>>>>>> Thanks for the pointer, so looking at that thread I suspect the three
>>>>>> referenced bugs in Debian are in the end all releated. We have one as
>>>>>> well relating to the megasas_sas driver, this one for the mpt3sas
>>>>>> driver and one for the i40e driver).
>>>>>>
>>>>>> AFAICS, there is not yet a patch which has landed upstream which I can
>>>>>> redirect to a affected user to test?
>>>>>>
>>>>> Konrad pointed me at this thread: https://lore.kernel.org/
>>>>> all/20250211120432.29493-1-jgross@...e.com/
>>>>>
>>>>> This has some fixes, but not landed upstream yet.
>>>> Patches are upstream now. In case you still experience any problems, please
>>>> speak up.
>>> What specific commits should be backported here?
>> Those are:
>>
>> e93ec87286bd1fd30b7389e7a387cfb259f297e3
>> 85fcb57c983f423180ba6ec5d0034242da05cc54
> Ugh, neither of them were marked for stable inclusion, why not?  Anyway,
> I'll go queue them up after this round of kernels is released hopefully
> tomorrow, but next time, please follow the stable kernel rules if you
> know you want a patch included in a tree.


Hi,

I see these patches in 6.12 now and upon manually checking these patches
cleanly apply till 6.6 kernel so I guess they will be eventually back
ported till there? 6.1 and older kernels have conflicts while cherry
picking these commits which makes it harder to verify them as the test
machine I have runs on a much older kernel(5.4) unfortunately. If it
could be at least be brought back till 5.15, testing this would become
much easier.

Thanks,
Harshvardhan


>
> thanks,
>
> greg k-h