linux-kernel - Re: [PATCH] nvme: hwmon: fix crash on device teardown

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Message-ID: <20201230151653.ozlqlwef7f2tarwz@beryllium.lan>
Date:   Wed, 30 Dec 2020 16:16:53 +0100
From:   Daniel Wagner <dwagner@...e.de>
To:     Hannes Reinecke <hare@...e.de>
Cc:     Sagi Grimberg <sagi@...mberg.me>,
        Enzo Matsumiya <ematsumiya@...e.de>,
        linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        Jens Axboe <axboe@...com>, Keith Busch <kbusch@...nel.org>,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH] nvme: hwmon: fix crash on device teardown

On Wed, Dec 30, 2020 at 03:38:05PM +0100, Daniel Wagner wrote:
> I've enabled CONFIG_DEVRES_DEBUG and see only 'DEVRES ADD' message. If I
> read it correctly the problem is that the resource is attached to the ctl
> devm object and not for the nvme devm object.

I've attached the hwmon to the nvme object, which fixes the obvious
problem. But I still don't see any 'DEVRES REM' message. This would
indicate the nvme object never really goes away... more debugging...