linux-kernel - Re: [bdi_unregister] 165a5e22fa INFO: task swapper:1 blocked for more than 120 seconds.

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Message-ID: <20170306011930.caykve5eanc5pn5m@wfg-t540p.sh.intel.com>
Date:   Mon, 6 Mar 2017 09:19:30 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Jan Kara <jack@...e.cz>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, LKP <lkp@...org>
Subject: Re: [bdi_unregister] 165a5e22fa INFO: task swapper:1 blocked for
 more than 120 seconds.

On Sun, Mar 05, 2017 at 08:12:30AM -0700, Jens Axboe wrote:
>On 03/04/2017 07:21 PM, Fengguang Wu wrote:
>> Hi Jan,
>>
>> FYI next-20170303 is good while mainline is bad with this error.
>> The attached reproduce-* may help reproduce the issue.
>
>What's the test case here? It's Sunday, we need to make a quick
>decision on whether to revert this patch or not. I'm inclined to
>do so.

It's boot-and-trinity test. The initrd (that the reproduce-* script
will auto download) is hard coded to do that.

Thanks,
Fengguang