netdev - Re: [PATCH 22/29] drivers, scsi: convert iscsi_task.refcount from atomic_t to refcount

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Date:   Thu, 9 Mar 2017 10:32:03 +0100
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     "Reshetova, Elena" <elena.reshetova@...el.com>,
        Chris Leech <cleech@...hat.com>
Cc:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux1394-devel@...ts.sourceforge.net" 
        <linux1394-devel@...ts.sourceforge.net>,
        "linux-bcache@...r.kernel.org" <linux-bcache@...r.kernel.org>,
        "linux-raid@...r.kernel.org" <linux-raid@...r.kernel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "fcoe-devel@...n-fcoe.org" <fcoe-devel@...n-fcoe.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "open-iscsi@...glegroups.com" <open-iscsi@...glegroups.com>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "target-devel@...r.kernel.org" <target-devel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        Hans Liljestrand <ishkamiel@...il.com>,
        Kees Cook <keescook@...omium.org>,
        David Windsor <dwindsor@...il.com>
Subject: Re: [PATCH 22/29] drivers, scsi: convert iscsi_task.refcount from
 atomic_t to refcount_t

On 03/09/2017 10:26 AM, Reshetova, Elena wrote:
> 
>> On 03/09/2017 08:18 AM, Reshetova, Elena wrote:
>>>> On Mon, Mar 06, 2017 at 04:21:09PM +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>
>>>>
>>>> This looks OK to me.
>>>>
>>>> Acked-by: Chris Leech <cleech@...hat.com>
>>>
>>> Thank you for review! Do you have a tree that can take this change?
>>
>> Hi Elena,
>>
>> iscsi like fcoe should go via the SCSI tree.
> 
> Thanks Johannes! Should I resend with "Acked-by" added in order for it to be picked up? 

Yes I think this would be a good way to go.

Byte,
	Johannes
-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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