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From: Felipe Franciosi <felipe@nutanix.com>
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Subject: Re: Fix for 84676c1f (b5b6e8c8) missing in 4.14.y
Date: Fri, 10 Aug 2018 17:10:52 +0000
Message-ID: <A18BBE4D-6470-4B57-92EB-B3129CFD3583@nutanix.com>
References: <53EA26B1-86F8-40BF-A128-33137217A3F9@nutanix.com>
 <20180810023128.GB2816@ming.t460p> <20180810101541.GB31002@kroah.com>
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> On 10 Aug 2018, at 03:15, Greg Kroah-Hartman <gregkh@linuxfoundation.org>=
 wrote:
>=20
> 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),
>>>=20
>>> Your series "scsi: virtio_scsi: fix IO hang caused by irq vector automa=
tic affinity" which forces virtio-scsi to use blk-mq fixes an issue introdu=
ced by 84676c1f. We noticed that this bug also exists in 4.14.y (as ef86f3a=
72adb), but your series was not backported to that stable branch.
>>>=20
>>> Are there any plans to do that? At least CoreOS is using 4.14 and showi=
ng issues on AHV (which provides an mq virtio-scsi controller).
>>>=20
>>=20
>> Hi Felipe,
>>=20
>> Looks the following 4 patches should have been marked as stable, sorry
>> for missing that.
>>=20
>> b5b6e8c8d3b4 scsi: virtio_scsi: fix IO hang caused by automatic irq vect=
or 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
>>=20
>> 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.
>=20
> 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 e58114824=
fa6.

If you skip that, all the other three apply cleanly.

Thanks,
Felipe


>=20
> thanks,
>=20
> greg k-h