From patchwork Thu Dec 2 06:19:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: He Ying X-Patchwork-Id: 12694436 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7AAACC433F5 for ; Thu, 2 Dec 2021 06:19:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=+5NGfFGYhtm3ehFlFzK5U309qX/ZRhVrsWXjaszU+mI=; b=BR8axy929U/pee lGIZx1PpSUZ0jdQsCX4ZfaE6TQDbhUSWpfKjtZhUE8ZPrGpLqT7uxcnfiQeMNV3tZO5bYL/g4U/VO g0L230q+EnuP34wPp+zfCnXL9eAuRO2P+aunml6XZUofGbVlflIyiRWdWts6cHPlej2fw6plO9XXu C0iTCpt6EQce14wNGxki+myOjSS4s+k/xzWf84DjbXACrjkzwG847+xZvOFAgyCcU7MzZwBWveEzw ewS65t93nx5V5lQN+sXHsZBEtyVqx2eNHWI8VYYYzMktoPxl+tDMbSAhvwupUIrYG+qEW9aiKFXzW lfne0fBzX/ohl+FhV5zQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1msfQ5-00B2vx-Pi; Thu, 02 Dec 2021 06:18:13 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1msfQ1-00B2uT-Gu for linux-arm-kernel@lists.infradead.org; Thu, 02 Dec 2021 06:18:11 +0000 Received: from dggeme755-chm.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4J4Qjv5rnHzbhyQ; Thu, 2 Dec 2021 14:17:55 +0800 (CST) Received: from huawei.com (10.67.174.47) by dggeme755-chm.china.huawei.com (10.3.19.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.20; Thu, 2 Dec 2021 14:18:03 +0800 From: He Ying To: , , , , , CC: , Subject: [PATCH] arm: Show real address of stack limit in __die() Date: Thu, 2 Dec 2021 01:19:16 -0500 Message-ID: <20211202061916.204718-1-heying24@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.67.174.47] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggeme755-chm.china.huawei.com (10.3.19.101) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211201_221809_771189_10E1F8B7 X-CRM114-Status: UNSURE ( 8.70 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Printing real address of stack limit makes debug easier. And system is dying, there is no security risk to show real address. Signed-off-by: He Ying --- arch/arm/kernel/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 195dff58bafc..7d7c86d00482 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -273,7 +273,7 @@ static int __die(const char *str, int err, struct pt_regs *regs) print_modules(); __show_regs(regs); __show_regs_alloc_free(regs); - pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n", + pr_emerg("Process %.*s (pid: %d, stack limit = 0x%px)\n", TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk)); if (!user_mode(regs) || in_interrupt()) {