Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754636AbYLVMCg (ORCPT ); Mon, 22 Dec 2008 07:02:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753658AbYLVMC1 (ORCPT ); Mon, 22 Dec 2008 07:02:27 -0500 Received: from mga09.intel.com ([134.134.136.24]:36047 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753496AbYLVMC0 (ORCPT ); Mon, 22 Dec 2008 07:02:26 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.36,263,1228118400"; d="scan'208";a="475961409" Date: Mon, 22 Dec 2008 13:02:18 +0100 From: Markus Metzger To: hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de Cc: markus.t.metzger@intel.com, markus.t.metzger@gmail.com, roland@redhat.com, akpm@linux-foundation.org, mtk.manpages@gmail.com, eranian@googlemail.com, juan.villacis@intel.com Subject: [patch] x86, ptrace: require admin privileges for ptrace BTS extension Message-ID: <20081222130218.A31747@sedona.ch.intel.com> Mime-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.2.5i Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1685 Lines: 50 Require admin privileges for ptrace BTS extension. Reported-by: Ingo Molnar Signed-off-by: Markus Metzger --- Index: gits/arch/x86/kernel/ptrace.c =================================================================== --- gits.orig/arch/x86/kernel/ptrace.c 2008-12-22 09:09:25.000000000 +0100 +++ gits/arch/x86/kernel/ptrace.c 2008-12-22 11:03:01.000000000 +0100 @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -742,6 +743,10 @@ struct ptrace_bts_config cfg; int error = 0; + error = -EPERM; + if (!capable(CAP_SYS_ADMIN)) + goto errout; + error = -EOPNOTSUPP; if (!bts_cfg.sizeof_bts) goto errout; --------------------------------------------------------------------- Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen Germany Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Douglas Lusk, Peter Gleissner, Hannes Schwaderer Registergericht: Muenchen HRB 47456 Ust.-IdNr. VAT Registration No.: DE129385895 Citibank Frankfurt (BLZ 502 109 00) 600119052 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- 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/