linux-kernel - Re: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug

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Message-ID: <20171222045318.GA4505@wolff.to>
Date:   Thu, 21 Dec 2017 22:53:18 -0600
From:   Bruno Wolff III <bruno@...ff.to>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     weiping zhang <zwp10758@...il.com>,
        Laura Abbott <labbott@...hat.com>, Jan Kara <jack@...e.cz>,
        linux-mm@...ck.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        regressions@...mhuis.info,
        weiping zhang <zhangweiping@...ichuxing.com>,
        linux-block@...r.kernel.org
Subject: Re: Regression with a0747a859ef6 ("bdi: add error handle for
 bdi_debug_register")

On Thu, Dec 21, 2017 at 17:16:03 -0600,
  Bruno Wolff III <bruno@...ff.to> wrote:
>
>Enforcing mode alone isn't enough as I tested that one one machine at 
>home and it didn't trigger the problem. I'll try another machine late 
>tonight.

I got the problem to occur on my i686 machine when booting in enforcing 
mode. This machine uses raid 1 vua mdraid which may or may not be a 
factor in this problem. The boot log has a trace at the end and might be 
helpful, so I'm attaching it here.

View attachment "boot-i686.log" of type "text/plain" (81348 bytes)