Re: Fix for 84676c1f (b5b6e8c8) missing in 4.14.y

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Wed, Aug 15, 2018 at 02:30:23PM +0000, Felipe Franciosi wrote:
> 
> > On 10 Aug 2018, at 20:43, Felipe Franciosi <felipe@nutanix.com> wrote:
> > 
> > 
> >> On 10 Aug 2018, at 11:32, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> >> 
> >> On Fri, Aug 10, 2018 at 05:10:52PM +0000, Felipe Franciosi wrote:
> >>> 
> >>>> On 10 Aug 2018, at 03:15, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> >>>> 
> >>>> On Fri, Aug 10, 2018 at 10:31:29AM +0800, Ming Lei wrote:
> >>>>> On Fri, Aug 10, 2018 at 02:09:01AM +0000, Felipe Franciosi wrote:
> >>>>>> Hi Ming (and all),
> >>>>>> 
> >>>>>> Your series "scsi: virtio_scsi: fix IO hang caused by irq vector automatic affinity" which forces virtio-scsi to use blk-mq fixes an issue introduced by 84676c1f. We noticed that this bug also exists in 4.14.y (as ef86f3a72adb), but your series was not backported to that stable branch.
> >>>>>> 
> >>>>>> Are there any plans to do that? At least CoreOS is using 4.14 and showing issues on AHV (which provides an mq virtio-scsi controller).
> >>>>>> 
> >>>>> 
> >>>>> Hi Felipe,
> >>>>> 
> >>>>> Looks the following 4 patches should have been marked as stable, sorry
> >>>>> for missing that.
> >>>>> 
> >>>>> b5b6e8c8d3b4 scsi: virtio_scsi: fix IO hang caused by automatic irq vector affinity
> >>>>> 2f31115e940c scsi: core: introduce force_blk_mq
> >>>>> adbe552349f2 scsi: megaraid_sas: fix selection of reply queue
> >>>>> 8b834bff1b73 scsi: hpsa: fix selection of reply queue
> >>>>> 
> >>>>> Usually this backporting is done by our stable guys, so I will CC stable
> >>>>> and leave them handle it, but I am happy to provide any help for
> >>>>> addressing conflicts or sort of thing.
> >>>> 
> >>>> As the above patches do not apply "cleanly" to the 4.14.y tree at all,
> >>>> can you please provide a set of backported patches that I can apply?
> >>> 
> >>> Actually, adbe552349f2 is already present in 4.14.y. It is commit e58114824fa6.
> >>> 
> >>> If you skip that, all the other three apply cleanly.
> >> 
> >> Ok, that works, but there's another bug report of aacraid having
> >> problems.  Any ideas?
> > 
> > Heya, I actually have no idea which bug you are talking about. TBH I'm only experiencing the bug fixed by b5b6e8c8d3b4, which only requires 2f31115e940c. (I tested a 4.14 with both commits which resolves the bug.)
> > 
> > I doubt any of that would have any interference with aacraid and should be safe backports in that respect.
> 
> Hi Greg, sorry to bother but I didn't hear anything back about this.
> Are you picking up 2f31115e940c and b5b6e8c8d3b4 for 4.14.y or waiting
> for some other action?

They are in 4.14.63-rc1 right now, did you not see them?

thanks,

greg k-h