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Message-ID: <20130930015305.GE13344@kroah.com>
Date: Sun, 29 Sep 2013 18:53:05 -0700
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Dave Jones <davej@...hat.com>, Ben Hutchings <ben@...adent.org.uk>,
Jiri Slaby <jslaby@...e.cz>, Bastian Blank <waldi@...ian.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sysrq: Allow access to sensitive keys to be restricted
by default
On Sun, Sep 29, 2013 at 09:40:09PM -0400, Dave Jones wrote:
> On Mon, Sep 30, 2013 at 02:31:08AM +0100, Ben Hutchings wrote:
> > From: Bastian Blank <waldi@...ian.org>
> >
> > Add a Kconfig variable to set the initial value of the Magic SysRq mask
> > (sysctl: kernel.sysrq).
> >
> > Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
> > ---
> > This has been in Debian for a while, but should probably be signed-off
> > by Bastian as well.
> >
> > Debian sets this to 0x01b6, which excludes.
> >
> > 8 - enable debugging dumps of processes etc.
> > 64 - enable signalling of processes (term, kill, oom-kill)
> > ...
> >
> > +config MAGIC_SYSRQ_DEFAULT_MASK
> > + hex "Default mask for Magic SysRq keys on the console"
> > + depends on MAGIC_SYSRQ
> > + default 1
> > + help
> > + Specifies the default mask for the allowed SysRq keys. This can be
> > + used to disable several sensitive keys by default.
>
> Might be nice to have the mask values duplicated here to save having to
> go grepping through code ?
Yeah, a hit would be good. Like what '1' does as default would be a
nice start :)
thanks,
greg k-h
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