linux-kernel - Re: noisy selinux messages on tmpfs mount.

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]

Message-ID: <2354586.80TRdrKbtf@sifl>
Date:	Thu, 08 Jan 2015 14:39:42 -0500
From:	Paul Moore <pmoore@...hat.com>
To:	Dave Jones <davej@...emonkey.org.uk>
Cc:	Stephen Smalley <sds@...ch.ncsc.mil>,
	James Morris <james.l.morris@...cle.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	selinux@...ho.nsa.gov
Subject: Re: noisy selinux messages on tmpfs mount.

On Thursday, January 08, 2015 02:34:57 PM Paul Moore wrote:
> On Thursday, January 08, 2015 02:08:22 PM Dave Jones wrote:
> > systemd has started mounting a tmpfs in /run/user/<uid> every time a
> > session begins.  So after ssh'ing into a box a number of times, dmesg
> > looks like this..
> > 
> > [...] SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
> > [...] SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
> 
> {snip}
> 
> > What's a good solution to stopping this spew ? printk_once doesn't seem
> > like a good fit, in case someone is doing different labelling behaviours
> > between mounts.
> > 
> > Could we only print it if the mount is being done with non-default
> > behaviour perhaps?
> 
> I'm very curious to hear Stephen's opinion on the issue, but I wonder how
> much this would honestly impact us if we removed this message in the case
> where we mount the filesystem with a known labeling behavior.

[NOTE: adding the SELinux list to the CC line.]

-- 
paul moore
security @ redhat

--
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/