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From: Ming Lei <ming.lei@redhat.com>
To: Bart Van Assche <Bart.VanAssche@wdc.com>
Cc: "osandov@osandov.com" <osandov@osandov.com>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>
Subject: Re: v4.16-rc2: I/O hang with dm-rq + Kyber
Date: Sat, 24 Feb 2018 00:26:27 +0800	[thread overview]
Message-ID: <20180223162626.GB17466@ming.t460p> (raw)
In-Reply-To: <1519333819.2861.17.camel@wdc.com>

On Thu, Feb 22, 2018 at 09:10:23PM +0000, Bart Van Assche wrote:
> Hello Omar,
> 
> I/O hangs if I run the following command on top of kernel v4.16-rc2 + the
> ib_srpt patch that adds RDMA/CM support:
> 
> srp-test/run_tests -c -d -r 10 -t 02-mq -e kyber
> 
> This does not happen with the deadline scheduler nor without a scheduler.
> This test passed a few months ago. I have attached the output of the following
> command to this e-mail:
> 
> (cd /sys/kernel/debug/block && grep -r .) | grep -v /poll_stat
> 
> Can you have a look?

The following 2 patch fixes one IO hang on kyber in my test on USB, could
you test it and see if your case can be fixed?

	https://marc.info/?l=linux-block&m=151940022831994&w=2

BTW, from your attached log, looks it belongs to domain token leak
issue too, so it should have been addressed by above patches.

Thanks,
Ming

  parent reply	other threads:[~2018-02-23 16:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-22 21:10 v4.16-rc2: I/O hang with dm-rq + Kyber Bart Van Assche
2018-02-22 22:42 ` Omar Sandoval
2018-02-22 23:22   ` Bart Van Assche
2018-02-23 16:26 ` Ming Lei [this message]
2018-02-23 17:13   ` Bart Van Assche

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