linux-kernel - Re: [PATCH] nvme: fix NULL pointer dereference

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Message-ID: <CAA5qM4Bj3BqYt-J=YqWKMWLFxDaMwQa4qAqPibyikpX5FBSzRQ@mail.gmail.com>
Date:   Thu, 17 Sep 2020 20:44:58 -0400
From:   Tong Zhang <ztong0001@...il.com>
To:     Keith Busch <kbusch@...nel.org>
Cc:     Jens Axboe <axboe@...com>, Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvme: fix NULL pointer dereference

Hmm..Yeah.. I see your point.
I was naivly thinking the command_id was the culprit.

On Thu, Sep 17, 2020 at 1:14 PM Keith Busch <kbusch@...nel.org> wrote:
>
> On Thu, Sep 17, 2020 at 12:56:59PM -0400, Tong Zhang wrote:
> > The command_id in CQE is writable by NVMe controller, driver should
> > check its sanity before using it.
>
> We already do that.