linux-kernel - Re: [PATCH 1/1] NVMe: Do not take nsid while a passthrough IO command is being issued via a block device file descriptor

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: <alpine.LNX.2.00.1501221651410.15481@localhost.lm.intel.com>
Date:	Thu, 22 Jan 2015 16:58:02 +0000 (UTC)
From:	Keith Busch <keith.busch@...el.com>
To:	Christoph Hellwig <hch@...radead.org>
cc:	Keith Busch <keith.busch@...el.com>, Yan Liu <yan@...estorage.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org
Subject: Re: [PATCH 1/1] NVMe: Do not take nsid while a passthrough IO command
 is being issued via a block device file descriptor

On Thu, 22 Jan 2015, Christoph Hellwig wrote:
> On Thu, Jan 22, 2015 at 03:21:28PM +0000, Keith Busch wrote:
>> But if you really need to restrict namespace access, shouldn't that be
>> enforced on the target side with reservations or similar mechanism?
>
> Think for example about containers where we give eah container access
> to a single nvme namespace, including container root access.  Here you
> don't really want container A to be able to submit I/O for another
> container.  A similar case exists for virtualization where we had
> problems with SCSI passthrough from guests.


Okay, that's a great point.

Yan, we should apply this if you can submit a patch for the linux-block
tree.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/