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

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Message-ID: <20171215021111.GA19764@wolff.to>
Date:   Thu, 14 Dec 2017 20:11:11 -0600
From:   Bruno Wolff III <bruno@...ff.to>
To:     weiping zhang <zwp10758@...il.com>
Cc:     Laura Abbott <labbott@...hat.com>, Jan Kara <jack@...e.cz>,
        Jens Axboe <axboe@...nel.dk>, linux-mm@...ck.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        regressions@...mhuis.info, linux-block@...r.kernel.org
Subject: Re: Regression with a0747a859ef6 ("bdi: add error handle for
 bdi_debug_register")

On Fri, Dec 15, 2017 at 10:04:32 +0800,
  weiping zhang <zwp10758@...il.com> wrote:
>
>so I want see the WARN_ON as you paste before, also my DEBUG log will help
>to find which step fail.

The previous time also journalctl for output, but maybe I used slightly 
different options. I'll look and see if it is in the journal for the last 
bad boot. I can do that from home.