Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754499Ab3I3Bkf (ORCPT ); Sun, 29 Sep 2013 21:40:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59885 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753511Ab3I3Bke (ORCPT ); Sun, 29 Sep 2013 21:40:34 -0400 Date: Sun, 29 Sep 2013 21:40:09 -0400 From: Dave Jones To: Ben Hutchings Cc: Greg Kroah-Hartman , Jiri Slaby , Bastian Blank , LKML Subject: Re: [PATCH] sysrq: Allow access to sensitive keys to be restricted by default Message-ID: <20130930014009.GA30635@redhat.com> Mail-Followup-To: Dave Jones , Ben Hutchings , Greg Kroah-Hartman , Jiri Slaby , Bastian Blank , LKML References: <1380504668.14493.22.camel@deadeye.wl.decadent.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1380504668.14493.22.camel@deadeye.wl.decadent.org.uk> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1204 Lines: 35 On Mon, Sep 30, 2013 at 02:31:08AM +0100, Ben Hutchings wrote: > From: Bastian Blank > > Add a Kconfig variable to set the initial value of the Magic SysRq mask > (sysctl: kernel.sysrq). > > Signed-off-by: Ben Hutchings > --- > 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 ? Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/