linux-kernel - Re: [syzbot] INFO: task hung in del

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Message-ID: <20210712062241.GA9697@lst.de>
Date:   Mon, 12 Jul 2021 08:22:41 +0200
From:   Christoph Hellwig <hch@....de>
To:     Hillf Danton <hdanton@...a.com>
Cc:     syzbot <syzbot+0fe7752e52337864d29b@...kaller.appspotmail.com>,
        axboe@...nel.dk, hare@...e.de, hch@....de, jack@...e.cz,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] INFO: task hung in del_gendisk

On Mon, Jul 12, 2021 at 12:14:17PM +0800, Hillf Danton wrote:
> Fix it by s/nbd->destroy_complete/&nbd->destroy_complete/
> 
> Note this isnt a cure to what the syzbot reported.

Yeah.  The completion stuff does look bogus, but the actual sysbot
report is about the fact that del_gendisk is called from ->release.