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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBA3AC433F5 for ; Thu, 31 Mar 2022 11:24:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235135AbiCaL0L (ORCPT ); Thu, 31 Mar 2022 07:26:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235123AbiCaL0J (ORCPT ); Thu, 31 Mar 2022 07:26:09 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7AA8CE01D for ; Thu, 31 Mar 2022 04:24:22 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id g9-20020a17090ace8900b001c7cce3c0aeso2230822pju.2 for ; Thu, 31 Mar 2022 04:24:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=i57N+tGNg9+lxUlQKsWwq5Omt6VcQdu96X0KROKr1/k=; b=KtqlA9fX/tJSJ02dmocwpAP424iX3FqSF65XaMLx81Uaubal027nAO76/jDh9EelCQ CXOr5jfPzHhERNgPvaSFHrrdb813KKHX3/GeQQiP/Wjh+ANE3dD7DLqxWMdDW7zmZaLi WTK21c7ESmN2y5EmUTLI3rNGuBTER4hMGiqfajejPzkmaBL35k1zsfe7+j2qFDAPzQ1S Vaxonxny+3ueKDkJNqaZQOPFEYg9BNFUK8QwH28NxXJh3V29BkJvUs732E8+zEciHZBX VU4oVld459kWWj3uQZr+YhGMPBlX4xY5VKA8PnBZ6VFVqV74+A8r4eBBEqh30GsYJk7r 4fbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=i57N+tGNg9+lxUlQKsWwq5Omt6VcQdu96X0KROKr1/k=; b=ixRAJImCLGmxkdxelkadzopoutrHH9F2VyLBDt6GcKb/5pPVkeMxPiFLwzQ86WyXQ9 Fsa+u9TNJSF4FZnwuR12hYvlzQLj7EtjwH36mkaPsWVOrxDr4zWCsQXCHYUIMeA0Ajt5 wLAgRO+JpCqWsT6bSLqQZ1alGiZDFRVznupQd4T51W/EKizUzTfLN/UZhpHBJorZAiYM GR89i8QYYfLGs4YIm9EUy3volmVMYyabSqhyd9ha3NAxBekNH5G7zuqIJiS2Lf63R0DB 1rGyXBdr5XAjLZZeuTXUGnRUiwWbtB3G4GqTAnaV7F/HVoi+/JMFTyk34yax0uSKqdXR N0pg== X-Gm-Message-State: AOAM532r4W1hHE6jL5tc9IktZocsw02R3NS642ZucnQzOmRthvpIvQ2S FOuy7xcYMxKRIvAbL7qXYiI= X-Google-Smtp-Source: ABdhPJztcnIK6iFTn+TcQVq5JU0xh1tEw3pqrLYDdKQiAGOlzjy4M214ICBNWrIIxeKGLQSIpQ3CBQ== X-Received: by 2002:a17:902:a404:b0:14b:1100:aebc with SMTP id p4-20020a170902a40400b0014b1100aebcmr41196969plq.133.1648725861768; Thu, 31 Mar 2022 04:24:21 -0700 (PDT) Received: from raspberrypi ([49.166.114.232]) by smtp.gmail.com with ESMTPSA id nv11-20020a17090b1b4b00b001c71b0bf18bsm9998073pjb.11.2022.03.31.04.24.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Mar 2022 04:24:21 -0700 (PDT) Date: Thu, 31 Mar 2022 12:24:16 +0100 From: Austin Kim To: linux@armlinux.org.uk, arnd@arndb.de Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, austin.kim@lge.com, p4ranlee@gmail.com Subject: [PATCH v2] arm: kdump: add invalid input check for 'crashkernel=0' Message-ID: <20220331112416.GA1002@raspberrypi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Austin Kim Add invalid input check expression when 'crashkernel=0' is specified running kdump. Signed-off-by: Austin Kim --- arch/arm/kernel/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 039feb7cd590..1e8a50a97edf 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -1004,7 +1004,8 @@ static void __init reserve_crashkernel(void) total_mem = get_total_mem(); ret = parse_crashkernel(boot_command_line, total_mem, &crash_size, &crash_base); - if (ret) + /* invalid value specified or crashkernel=0 */ + if (ret || !crash_size) return; if (crash_base <= 0) { -- 2.20.1