linux-kernel - Re: [PATCH 21/29] drivers, s390: convert fc_fcp_pkt.ref_cnt from atomic_t to refcount

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Date:   Wed, 8 Mar 2017 15:06:53 +0100
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     "Reshetova, Elena" <elena.reshetova@...el.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Cc:     "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 21/29] drivers, s390: convert fc_fcp_pkt.ref_cnt from
 atomic_t to refcount_t

On 03/08/2017 02:48 PM, Reshetova, Elena wrote:
>> On 03/06/2017 03:21 PM, 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.
>>
>> The subject is wrong, should be something like "scsi: libfc convert
>> fc_fcp_pkt.ref_cnt from atomic_t to refcount_t" but not s390.
>>
>> Other than that
>> Acked-by: Johannes Thumshirn <jth@...nel.org>
>
> Turns out that it is better that all these patches go through the respective maintainer trees, if present.
> If I send an updated patch (with subject fixed), could you merge it through your tree?

Yes, but this would be the normal scsi tree from Martin and James.

Please include my Ack in the re-sends.

Thanks a lot,
	Johannes


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Johannes Thumshirn                                          Storage
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