linux-kernel - Re: [PATCH] nvme: fix use-after-free during booting

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Message-ID: <CAA5qM4B=KcDK=SmduJt3am=gL1miNKoKuEZWRqft1f-kG03fEA@mail.gmail.com>
Date:   Thu, 17 Sep 2020 11:24:59 -0400
From:   Tong Zhang <ztong0001@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Sagi Grimberg <sagi@...mberg.me>,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvme: fix use-after-free during booting

Hmm.. OK. Any suggestions on how to fix this?

On Thu, Sep 17, 2020 at 4:26 AM Christoph Hellwig <hch@....de> wrote:
>
> On Wed, Sep 16, 2020 at 11:36:05AM -0400, Tong Zhang wrote:
> > if a nvme controller is not responding during probing, a use-after-free
> > condition could happen
>
> This now leaks the queue for the regular teardown path.