linux-kernel - Re: bug in tag handling in blk-mq?

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Date:   Thu, 10 May 2018 06:38:28 +0200
From:   Mike Galbraith <efault@....de>
To:     Jens Axboe <axboe@...nel.dk>,
        Paolo Valente <paolo.valente@...aro.org>
Cc:     Christoph Hellwig <hch@....de>,
        linux-block <linux-block@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Oleksandr Natalenko <oleksandr@...alenko.name>
Subject: Re: bug in tag handling in blk-mq?

On Wed, 2018-05-09 at 13:50 -0600, Jens Axboe wrote:
> On 5/9/18 12:31 PM, Mike Galbraith wrote:
> > On Wed, 2018-05-09 at 11:01 -0600, Jens Axboe wrote:
> >> On 5/9/18 10:57 AM, Mike Galbraith wrote:
> >>
> >>>>> Confirmed.  Impressive high speed bug stomping.
> >>>>
> >>>> Well, that's good news. Can I get you to try this patch?
> >>>
> >>> Sure thing.  The original hang (minus provocation patch) being
> >>> annoyingly non-deterministic, this will (hopefully) take a while.
> >>
> >> You can verify with the provocation patch as well first, if you wish.
> > 
> > Done, box still seems fine.
> 
> Omar had some (valid) complaints, can you try this one as well? You
> can also find it as a series here:
> 
> http://git.kernel.dk/cgit/linux-block/log/?h=bfq-cleanups
> 
> I'll repost the series shortly, need to check if it actually builds and
> boots.

I applied the series (+ provocation), all is well.

	-Mike