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

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Message-ID: <20171217155448.GA20370@wolff.to>
Date:   Sun, 17 Dec 2017 09:54:48 -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 Sun, Dec 17, 2017 at 21:43:50 +0800,
  weiping zhang <zwp10758@...il.com> wrote:
>Hi, thanks for testing, I think you first reproduce this issue(got WARNING
>at device_add_disk) by your own build, then add my debug patch.

No, the first log (that Laura copied) was from the Fedora bug and it was 
from a Fedora kernel before I started doing the bisect. That warnings are 
missing from all of my builds, not just the ones from the patches.

I didn't spot anything obvious going through the kernel spec file when 
I looked, but I could easily have missed something.

Hopefully it is just a boot default that is different and that I can 
override it with a kernel boot parameter.