Date: Sun, 1 Nov 2015 10:07:14 +0100 (CET)
From: Jiri Kosina <jikos@kernel.org>
To: Chris J Arges <chris.j.arges@canonical.com>
cc: Jessica Yu <jeyu@redhat.com>, live-patching@vger.kernel.org,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Seth Jennings <sjenning@redhat.com>, Vojtech Pavlik <vojtech@suse.com>,
        linux-api@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: livepatch: old_name@old_addr scheme in livepatch sysfs
 directory
In-Reply-To: <56358EA4.10900@canonical.com>
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References: <1446263060-22175-1-git-send-email-chris.j.arges@canonical.com> <20151101015258.GA8199@packer-debian-8-amd64.digitalocean.com> <56358EA4.10900@canonical.com>
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On Sat, 31 Oct 2015, Chris J Arges wrote:

> Makes sense to me. Is there a reason why the sysfs entries are visible
> to non-root users?

Well, kptr_restrict applies only to values printed using '%pK'. So if the 
sysfs handler is using other printk() format string to print the pointer, 
it'll be leaked out (and should eventually be fixed).

Thanks,

-- 
Jiri Kosina
SUSE Labs

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