From patchwork Thu Nov 22 10:26:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukas Auer X-Patchwork-Id: 1001688 X-Patchwork-Delegate: uboot@andestech.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=aisec.fraunhofer.de Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 430x0g26NRz9rxp for ; Thu, 22 Nov 2018 21:45:07 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id C7F61C21FEA; Thu, 22 Nov 2018 10:34:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 39815C22028; Thu, 22 Nov 2018 10:28:21 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 77018C22028; Thu, 22 Nov 2018 10:27:42 +0000 (UTC) Received: from mail-edgeKA27.fraunhofer.de (mail-edgeka27.fraunhofer.de [153.96.1.27]) by lists.denx.de (Postfix) with ESMTPS id A8FC7C21F18 for ; Thu, 22 Nov 2018 10:27:37 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2EVAAAO4PJb/xwBYJliGgEBAQEBAgEBAQEHAgEBAQGBVAIBAQEBCwGCA4FWOYxvix2LFJApDYRsAoNuIjcGDQEDAQECAQECAgJpHAyFPgYnUhBRITYGDgWDIYFqAxQBqEkzh3YNghkJAYdQhCuBVz+GeYJ1hQ4Cn0EuBwKBEYEJBItegyALGIlYhyWOQYlVgVwjgVUzGiSDO4InF4NDilo+ATIBjlsBAQ X-IPAS-Result: A2EVAAAO4PJb/xwBYJliGgEBAQEBAgEBAQEHAgEBAQGBVAIBAQEBCwGCA4FWOYxvix2LFJApDYRsAoNuIjcGDQEDAQECAQECAgJpHAyFPgYnUhBRITYGDgWDIYFqAxQBqEkzh3YNghkJAYdQhCuBVz+GeYJ1hQ4Cn0EuBwKBEYEJBItegyALGIlYhyWOQYlVgVwjgVUzGiSDO4InF4NDilo+ATIBjlsBAQ X-IronPort-AV: E=Sophos;i="5.56,253,1539640800"; d="scan'208";a="12041304" Received: from mail-mtaka28.fraunhofer.de ([153.96.1.28]) by mail-edgeKA27.fraunhofer.de with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Nov 2018 11:27:38 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0ClAADN3/JbfRBhWMBiHAEBAQQBAQcEAQGBVAQBAQsBgzghOYxvljGQKQ2EbAKEDzcGDQEDAQECAQECFAEBFjojDIU9AwMnUhBRITYGDgWDIYFqAxWoSDOHdg2CGQkBh1CGAj+GeYJ1hQ4Cn0EuBwKBEYEJBItegyALGIlYhyWOQYlVgVwhgVYzGiSDO4InF4NDilo+AzABjlsBAQ X-IronPort-AV: E=Sophos;i="5.56,253,1539640800"; d="scan'208";a="19171999" Received: from fgdemucivp01ltm.xch.fraunhofer.de (HELO FGDEMUCIMP11EXC.ads.fraunhofer.de) ([192.88.97.16]) by mail-mtaKA28.fraunhofer.de with ESMTP/TLS/AES256-SHA; 22 Nov 2018 11:27:38 +0100 Received: from muc-nb-035.aisec.fraunhofer.de (10.80.233.50) by FGDEMUCIMP11EXC.ads.fraunhofer.de (10.80.232.42) with Microsoft SMTP Server (TLS) id 14.3.408.0; Thu, 22 Nov 2018 11:27:36 +0100 From: Lukas Auer To: Date: Thu, 22 Nov 2018 11:26:21 +0100 Message-ID: <20181122102637.17361-13-lukas.auer@aisec.fraunhofer.de> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20181122102637.17361-1-lukas.auer@aisec.fraunhofer.de> References: <20181122102637.17361-1-lukas.auer@aisec.fraunhofer.de> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-11.0.0.4179-8.200.1013-24238.005 X-TM-AS-Result: No--8.064600-8.000000-31 X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No Cc: Greentime Hu Subject: [U-Boot] [PATCH v4 12/28] riscv: treat undefined exception codes as reserved X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" Undefined exception codes currently lead to an out-of-bounds array access. Prevent this by treating undefined exception codes as "reserved". Signed-off-by: Lukas Auer Reviewed-by: Bin Meng Reviewed-by: Rick Chen --- Changes in v4: None Changes in v3: None Changes in v2: None arch/riscv/lib/interrupts.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c index 6a12818c2b..d0d8de500e 100644 --- a/arch/riscv/lib/interrupts.c +++ b/arch/riscv/lib/interrupts.c @@ -81,6 +81,10 @@ static void _exit_trap(ulong code, ulong epc, struct pt_regs *regs) "Store/AMO page fault", }; - printf("exception code: %ld , %s , epc %lx , ra %lx\n", - code, exception_code[code], epc, regs->ra); + if (code < ARRAY_SIZE(exception_code)) { + printf("exception code: %ld , %s , epc %lx , ra %lx\n", + code, exception_code[code], epc, regs->ra); + } else { + printf("Reserved\n"); + } }