On 2021/03/12 13:38, Shinichiro Kawasaki wrote:
> On Mar 11, 2021 / 15:54, Johannes Thumshirn wrote:
>> On 11/03/2021 16:48, Bart Van Assche wrote:
>>> On 3/11/21 7:18 AM, Johannes Thumshirn wrote:
>>>> On 11/03/2021 16:13, Bart Van Assche wrote:
>>>>> On 3/10/21 1:48 AM, Johannes Thumshirn wrote:
>>>>>> Recent changes [ ... ]
>>>>>
>>>>> Please add Fixes: and/or Cc: stable tags as appropriate.
>>>>
>>>> I couldn't pin down the offending commit and I can't reproduce it locally
>>>> as well, so I opted out of this. But it must be something between v5.11 and v5.12-rc2.
>>>
>>> That's weird. Did Shinichiro use a HBA? Could this be the result of a
>>> behavior change in the HBA driver?
>>
>> Yes I've looked at the commits in mpt3sas, but can't really pinpoint the
>> offending commit TBH. 664f0dce2058 ("scsi: mpt3sas: Add support for shared
>> host tagset for CPU hotplug") is the only one that /looks/ as if it could
>> be causing it, but I don't know mpt3sas well enough.
>>
>> FWIW added Sreekanth
>
> The WARNING was found in kernel v5.12-rc2 test with a SAS SMR drive and HBA
> Broadcom 9400. It can be recreated by running blktests block/004 on the drive
> (after reboot). It is also recreated with SATA SMR drive with the HBA, but not
> observed with SATA drives connected to AHCI.
>
> I reverted the commit 664f0dce2058, then the WARNING disappeared. I suppose
> it indicates that the commit changed HBA driver behavior.
Can you send the warning splat with backtrace ?
--
Damien Le Moal
Western Digital Research
