linux-kernel - Re: [PATCH] PCI: vmd: Expose oob management window to users

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: <20190917080435.GA5666@infradead.org>
Date:   Tue, 17 Sep 2019 01:04:35 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Jon Derrick <jonathan.derrick@...el.com>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Keith Busch <keith.busch@...el.com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: vmd: Expose oob management window to users

On Mon, Sep 16, 2019 at 08:51:28AM -0600, Jon Derrick wrote:
> Some VMD devices provide a management window within MEMBAR2 that is used
> to communicate out-of-band with child devices. This patch creates a
> binary file for interacting with the interface.
> 
> OOB Reads/Writes are bounds-checked by sysfs_fs_bin_{read,write}

I don't think this is a reasonable interface.  If the OOB interfae
is useful please provide an actual kernel driver for it.