Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933626Ab3CVPSX (ORCPT ); Fri, 22 Mar 2013 11:18:23 -0400 Received: from e39.co.us.ibm.com ([32.97.110.160]:58600 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933169Ab3CVPSS (ORCPT ); Fri, 22 Mar 2013 11:18:18 -0400 Date: Fri, 22 Mar 2013 20:47:58 +0530 From: Ananth N Mavinakayanahalli To: lkml Cc: oleg@redhat.com, Srikar Dronamraju , benh@kernel.crashing.org, ppcdev Subject: [PATCH v2 2/4] uprobes: refuse uprobe on trap variants Message-ID: <20130322151758.GC20010@in.ibm.com> Reply-To: ananth@in.ibm.com References: <20130322151627.GB20010@in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130322151627.GB20010@in.ibm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13032215-3620-0000-0000-000001BC2C55 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1028 Lines: 29 From: Ananth N Mavinakayanahalli Refuse to place a uprobe if a trap variant already exists in the file copy at the address. Signed-off-by: Ananth N Mavinakayanahalli --- kernel/events/uprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux-3.9-rc3/kernel/events/uprobes.c =================================================================== --- linux-3.9-rc3.orig/kernel/events/uprobes.c +++ linux-3.9-rc3/kernel/events/uprobes.c @@ -573,7 +573,7 @@ static int prepare_uprobe(struct uprobe goto out; ret = -ENOTSUPP; - if (is_swbp_insn((uprobe_opcode_t *)uprobe->arch.insn)) + if (is_trap_insn((uprobe_opcode_t *)uprobe->arch.insn)) goto out; ret = arch_uprobe_analyze_insn(&uprobe->arch, mm, vaddr); -- 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/