linux-kernel - Re: [PATCH 17/29] drivers, pci: convert hv_pci_dev.refs from atomic_t to refcount

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Message-ID: <CAErSpo4SauhAXm+twpUQVcX7822QdnC=obv7g6oOs_eEh9JOUA@mail.gmail.com>
Date:   Tue, 18 Apr 2017 09:05:22 -0500
From:   Bjorn Helgaas <bhelgaas@...gle.com>
To:     "Reshetova, Elena" <elena.reshetova@...el.com>
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Kees Cook <keescook@...omium.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        Hans Liljestrand <ishkamiel@...il.com>,
        David Windsor <dwindsor@...il.com>
Subject: Re: [PATCH 17/29] drivers, pci: convert hv_pci_dev.refs from atomic_t
 to refcount_t

On Tue, Apr 18, 2017 at 5:40 AM, Reshetova, Elena
<elena.reshetova@...el.com> wrote:
>
>
>> On Mon, 6 Mar 2017 15:38:29 -0600
>> Bjorn Helgaas <helgaas@...nel.org> wrote:
>>
>> > [+cc Hyper-V folks, -cc others]
>> >
>> > On Mon, Mar 06, 2017 at 04:21:04PM +0200, Elena Reshetova wrote:
>> > > refcount_t type and corresponding API should be
>> > > used instead of atomic_t when the variable is used as
>> > > a reference counter. This allows to avoid accidental
>> > > refcounter overflows that might lead to use-after-free
>> > > situations.
>> > >
>> > > Signed-off-by: Elena Reshetova <elena.reshetova@...el.com>
>> > > Signed-off-by: Hans Liljestrand <ishkamiel@...il.com>
>> > > Signed-off-by: Kees Cook <keescook@...omium.org>
>> > > Signed-off-by: David Windsor <dwindsor@...il.com>
>>
>>
>> Reviewed-by: Stephen Hemminger <sthemmin@...rosoft.com>
>
> Getting back on this: could you take the patch via your tree or should I resubmit to some dedicated place with a new review-by added?

Sorry, for some reason I had assumed this would all go as part of the
larger series.  I applied it to my pci/host-hv branch with Stephen's
reviewed-by for v4.12.

Thanks for the ping!

Bjorn