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

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Message-ID: <20171214102930.GA24997@wolff.to>
Date:   Thu, 14 Dec 2017 04:29:30 -0600
From:   Bruno Wolff III <bruno@...ff.to>
To:     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 Thu, Dec 14, 2017 at 18:09:27 +0800,
  weiping zhang <zhangweiping@...ichuxing.com> wrote:
>On Thu, Dec 14, 2017 at 02:24:52AM -0600, Bruno Wolff III wrote:
>> On Wed, Dec 13, 2017 at 16:54:17 -0800,
>>  Laura Abbott <labbott@...hat.com> wrote:
>> >Hi,
>> >
>> >Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1520982
>> >of a boot failure/bug on Linus' master (full bootlog at the bugzilla)
>>
>> I'm available for testing. The problem happens on my x86_64 Dell
>> Workstation, but not an old i386 server or an x86_64 mac hardware
>> based laptop.
>
>Hi,
>
>It seems something wrong with bdi debugfs register, could you help
>test the forllowing debug patch, I add some debug log, no function
>change, thanks.

I'll test it this morning. I'll probably have results in about 7 hrs from now.