From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754760AbcCYTiy (ORCPT ); Fri, 25 Mar 2016 15:38:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35347 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753321AbcCYTgM (ORCPT ); Fri, 25 Mar 2016 15:36:12 -0400 From: Josh Poimboeuf To: Jiri Kosina , Jessica Yu , Miroslav Benes Cc: linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, Vojtech Pavlik Subject: [RFC PATCH v1.9 04/14] x86: move _stext marker before head code Date: Fri, 25 Mar 2016 14:34:51 -0500 Message-Id: <7beba13709d4b0142e5d573783c55d481153057d.1458933243.git.jpoimboe@redhat.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When core_kernel_text() is used to determine whether an address on a task's stack trace is a kernel text address, it incorrectly returns false for early text addresses for the head code between the _text and _stext markers. Head code is text code too, so mark it as such. This seems to match the intent of other users of the _stext symbol, and it also seems consistent with what other architectures are already doing. Signed-off-by: Josh Poimboeuf --- arch/x86/kernel/vmlinux.lds.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index d239639..66e6acb 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -91,10 +91,10 @@ SECTIONS /* Text and read-only data */ .text : AT(ADDR(.text) - LOAD_OFFSET) { _text = .; + _stext = .; /* bootstrapping code */ HEAD_TEXT . = ALIGN(8); - _stext = .; TEXT_TEXT SCHED_TEXT LOCK_TEXT -- 2.4.3