linux-kernel - Re: kernel BUG at mm/page-writeback.c:2241 [ BUG

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Message-ID: <20201104151605.GG5600@quack2.suse.cz>
Date:   Wed, 4 Nov 2020 16:16:05 +0100
From:   Jan Kara <jack@...e.cz>
To:     Qian Cai <cai@...hat.com>
Cc:     Jens Axboe <axboe@...nel.dk>, Matthew Wilcox <willy@...radead.org>,
        Jan Kara <jack@...e.cz>, Christoph Hellwig <hch@...radead.org>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: kernel BUG at mm/page-writeback.c:2241 [
 BUG_ON(PageWriteback(page); ]

On Mon 26-10-20 10:26:26, Qian Cai wrote:
> On Mon, 2020-10-26 at 07:55 -0600, Jens Axboe wrote:
> > I've tried to reproduce this as well, to no avail. Qian, could you perhaps
> > detail the setup? What kind of storage, kernel config, compiler, etc.
> > 
> 
> So far I have only been able to reproduce on this Intel platform:
> 
> HPE DL560 gen10
> Intel(R) Xeon(R) Gold 6154 CPU @ 3.00GHz
> 131072 MB memory, 1000 GB disk space (smartpqi nvme)

Did you try running with the debug patch Matthew sent? Any results?

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR