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

On Fri, Aug 10, 2018 at 05:10:52PM +0000, Felipe Franciosi wrote:

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On 10 Aug 2018, at 03:15, Greg Kroah-Hartman [off-list ref] wrote:

On Fri, Aug 10, 2018 at 10:31:29AM +0800, Ming Lei wrote:

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On Fri, Aug 10, 2018 at 02:09:01AM +0000, Felipe Franciosi wrote:

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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?

greg k-h