netdev - Re: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 8 Mar 2017 12:45:23 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     "Reshetova, Elena" <elena.reshetova@...el.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Cc:     "peterz@...radead.org" <peterz@...radead.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "target-devel@...r.kernel.org" <target-devel@...r.kernel.org>,
        "linux1394-devel@...ts.sourceforge.net" 
        <linux1394-devel@...ts.sourceforge.net>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "fcoe-devel@...n-fcoe.org" <fcoe-devel@...n-fcoe.org>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "open-iscsi@...glegroups.com" <open-iscsi@...glegroups.com>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        "linux-raid@...r.kernel.org" <linux-raid@...r.kernel.org>,
        "linux-bcache@...r.kernel.org" <linux-bcache@...r.kernel.org>,
        Hans Liljestrand <ishkamiel@...il.com>,
        David Windsor <dwindsor@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        Juergen Gross <jgross@...e.com>
Subject: Re: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users
 from atomic_t to refcount_t

On 03/08/2017 08:49 AM, Reshetova, Elena wrote:
>> On 03/06/2017 09:21 AM, 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>
>>> ---
>>>  drivers/xen/gntdev.c | 11 ++++++-----
>>>  1 file changed, 6 insertions(+), 5 deletions(-)
>> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> Is there a tree that can take this change? Turns out it is better to propagate changes via separate trees and only leftovers can be taken via Greg's tree.  
>

Sure, we can take it via Xen tree for rc3.

-boris