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Date:   Wed, 23 Sep 2020 07:06:41 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Tong Zhang <ztong0001@gmail.com>
Cc:     Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>,
        Jens Axboe <axboe@fb.com>, Sagi Grimberg <sagi@grimberg.me>,
        linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] nvme: fix use-after-free during booting
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References: <20200916153605.5253-1-ztong0001@gmail.com> <20200922135956.GA23437@lst.de> <CAA5qM4BPKZaqH0SHS3zCO7oz=f3Ow_zB2fqtJYUrbbFBNbWsNQ@mail.gmail.com> <20200922164154.GA1894@lst.de> <61E8905E-E3FE-46EB-8283-9B35B4F069E1@gmail.com>
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On Tue, Sep 22, 2020 at 04:34:45PM -0400, Tong Zhang wrote:
> Hi Christoph,
> I modified the patch a bit and now it works.

So you're still hitting the WARN_ON_ONCE?  I think we need to fix that
as well, but all the ideas I have will turn into a bigger project,
so I think I'll submit this one to Jens, and then do things
incrementally.

Can you share your reproducer?