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.
--
Best Regards,
Shin'ichiro Kawasaki
