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=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 6BD52C433F4 for ; Tue, 28 Aug 2018 09:13:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 125D4208A5 for ; Tue, 28 Aug 2018 09:13:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PCC+/h+0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 125D4208A5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727444AbeH1NET (ORCPT ); Tue, 28 Aug 2018 09:04:19 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:33560 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727091AbeH1NES (ORCPT ); Tue, 28 Aug 2018 09:04:18 -0400 Received: by mail-pf1-f195.google.com with SMTP id d4-v6so447856pfn.0 for ; Tue, 28 Aug 2018 02:13:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id; bh=hj1DhWCgZDwiFhg5QFAQVYtMr6py/Geftx6coxS25Do=; b=PCC+/h+02f+swgWKqYaDaDJRIhz8Vg//BE2/TDjGQbkMpd2LCnratRZEgKpqZCVAdG ReXOtAujXloiK8BgzujEpNq4f11CGmkTlBDilyqut81TxoWLue0MB6v2d3JfBkj+bD1Z lVaLoPF28yCiAsZsW4pkKlDAg78yo8h1M7XvFo7JUFCNO5JMzAUsdz/BDHBfd8le6PgC r2gtgaN0vav36HR6TY+VIunzFT2daVb9DsR54c2P1aViYCrI/coPeJmuCOx3M36Sj6/1 6DTrstOQFusNgMGjRCelA9YqIrmik0vrR0+idfeAPDuPzgUhlxqkuOrO4/GpDeEybX3z FGqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id; bh=hj1DhWCgZDwiFhg5QFAQVYtMr6py/Geftx6coxS25Do=; b=R8S8v/fFP+O04X+4dsrIA+guqj+lTjzrnwB6S/aWgfHQHzPBBU3vv0tfsJU9MvNb/A 4OU6Vqbu4Vkhl60fPk0duccAuhXtJC8pQLBRZa8IZyOV/ooP0M9+A/Z3uNYCsdJQSRIN T09/H2IhqO+bedQPq2RfPF/WCteyG1/BW5gpNoZuSy8OH0yf+lVGgUP7kmYo2AXBIRV+ hfw+iaUDCLVAQ5bw6GuMVpK2M0x+wGdET+fC0mYKYI4nLFCoRpLqM1gvHetqWlMy78Qd GJi22s4BOnwU1cfcPrenG5TJdT9RtTRL4PPpuGwUtTz0UqrRhCRICUYYkdYPMdwOzfjp crtg== X-Gm-Message-State: APzg51CGeCObMH5D+UWasgxNY/7oXi03ES6Z4G7zVxM7yWhi88SQnZX7 K2rPeHhoS9pWZcbsItiKK28= X-Google-Smtp-Source: ANB0VdZavGJlhYWAxm3umvtYHV6/YWnn4QykgWTJ9Ws1BgMuHfyYYw0lVz1k/hAQKojQspGzQDXe7g== X-Received: by 2002:a63:481:: with SMTP id 123-v6mr669973pge.129.1535447615746; Tue, 28 Aug 2018 02:13:35 -0700 (PDT) Received: from app09.andestech.com ([118.163.51.199]) by smtp.gmail.com with ESMTPSA id l9-v6sm1083027pgg.79.2018.08.28.02.13.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 Aug 2018 02:13:35 -0700 (PDT) From: Greentime Hu X-Google-Original-From: Greentime Hu To: greentime@andestech.com, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] nds32: Only print one page of stack when die to prevent printing too much information. Date: Tue, 28 Aug 2018 17:12:20 +0800 Message-Id: <20180828091222.31672-1-greentime@andestech.com> X-Mailer: git-send-email 2.18.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It may print too much information sometimes if the stack is wrong or too big. This patch can limit the debug information in a page of stack. Signed-off-by: Greentime Hu --- arch/nds32/kernel/traps.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c index b0b85b7ab079..1496aab48998 100644 --- a/arch/nds32/kernel/traps.c +++ b/arch/nds32/kernel/traps.c @@ -173,11 +173,10 @@ void die(const char *str, struct pt_regs *regs, int err) pr_emerg("CPU: %i\n", smp_processor_id()); show_regs(regs); pr_emerg("Process %s (pid: %d, stack limit = 0x%p)\n", - tsk->comm, tsk->pid, task_thread_info(tsk) + 1); + tsk->comm, tsk->pid, end_of_stack(tsk)); if (!user_mode(regs) || in_interrupt()) { - dump_mem("Stack: ", regs->sp, - THREAD_SIZE + (unsigned long)task_thread_info(tsk)); + dump_mem("Stack: ", regs->sp, (regs->sp + PAGE_SIZE) & PAGE_MASK); dump_instr(regs); dump_stack(); } -- 2.18.0