From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A800C7618F for ; Sat, 20 Jul 2019 02:33:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 648F221872 for ; Sat, 20 Jul 2019 02:33:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390361AbfGTCdb (ORCPT ); Fri, 19 Jul 2019 22:33:31 -0400 Received: from relay1.mentorg.com ([192.94.38.131]:40001 "EHLO relay1.mentorg.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728058AbfGTCdb (ORCPT ); Fri, 19 Jul 2019 22:33:31 -0400 Received: from svr-orw-mbx-01.mgc.mentorg.com ([147.34.90.201]) by relay1.mentorg.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-SHA384:256) id 1hofBR-0001QZ-Ku from George_Davis@mentor.com ; Fri, 19 Jul 2019 19:33:13 -0700 Received: from localhost (147.34.91.1) by svr-orw-mbx-01.mgc.mentorg.com (147.34.90.201) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Fri, 19 Jul 2019 19:33:11 -0700 From: "George G. Davis" To: Russell King , "Eric W. Biederman" , Thomas Gleixner , Florian Fainelli , Allison Randal , "George G. Davis" , Souptick Joarder , "moderated list:ARM PORT" , open list Subject: [PATCH] ARM: Fix null die() string for unhandled data and prefetch abort cases Date: Fri, 19 Jul 2019 22:32:55 -0400 Message-ID: <1563589976-19004-1-git-send-email-george_davis@mentor.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-ClientProxiedBy: svr-orw-mbx-04.mgc.mentorg.com (147.34.90.204) To svr-orw-mbx-01.mgc.mentorg.com (147.34.90.201) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When an unhandled data or prefetch abort occurs, the die() string is empty resulting in backtrace messages similar to the following: Internal error: : 1 [#1] PREEMPT SMP ARM Replace the null string with the name of the abort handler in order to provide more meaningful hints as to the cause of the fault. Signed-off-by: George G. Davis --- arch/arm/mm/fault.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 0048eadd0681..dddea0a21220 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -557,7 +557,7 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs) inf->name, fsr, addr); show_pte(current->mm, addr); - arm_notify_die("", regs, inf->sig, inf->code, (void __user *)addr, + arm_notify_die(inf->name, regs, inf->sig, inf->code, (void __user *)addr, fsr, 0); } @@ -585,7 +585,7 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs) pr_alert("Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n", inf->name, ifsr, addr); - arm_notify_die("", regs, inf->sig, inf->code, (void __user *)addr, + arm_notify_die(inf->name, regs, inf->sig, inf->code, (void __user *)addr, ifsr, 0); } -- 2.7.4