linux-kernel - Re: [PATCH] xen/privcmd: allow fetching resource sizes

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] [day] [month] [year] [list]

Message-ID: <67725689-2eab-fd17-d330-626f3505c6c1@suse.com>
Date:   Tue, 12 Jan 2021 11:34:16 +0100
From:   Jürgen Groß <jgross@...e.com>
To:     Roger Pau Monné <roger.pau@...rix.com>
Cc:     linux-kernel@...r.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Paul Durrant <paul.durrant@...rix.com>,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH] xen/privcmd: allow fetching resource sizes

On 12.01.21 11:03, Roger Pau Monné wrote:
> On Tue, Jan 12, 2021 at 06:57:30AM +0100, Jürgen Groß wrote:
>> On 11.01.21 16:29, Roger Pau Monne wrote:
>>> Allow issuing an IOCTL_PRIVCMD_MMAP_RESOURCE ioctl with num = 0 and
>>> addr = 0 in order to fetch the size of a specific resource.
>>>
>>> Add a shortcut to the default map resource path, since fetching the
>>> size requires no address to be passed in, and thus no VMA to setup.
>>>
>>> Fixes: 3ad0876554caf ('xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE')
>>
>> I don't think this addition is a reason to add a "Fixes:" tag. This is
>> clearly new functionality.
> 
> It could be argued that not allowing to query the resource size was a
> shortcoming of the original implementation, but a backport request to
> stable would be more appropriate than a fixes tag I think. Will drop
> on next version and add a backport request if you agree.

Yes, please.


Juergen

Download attachment "OpenPGP_0xB0DE9DD628BF132F.asc" of type "application/pgp-keys" (3092 bytes)

Download attachment "OpenPGP_signature" of type "application/pgp-signature" (496 bytes)