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 4522EC433F5 for ; Tue, 10 May 2022 22:52:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237382AbiEJWwV (ORCPT ); Tue, 10 May 2022 18:52:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232301AbiEJWwS (ORCPT ); Tue, 10 May 2022 18:52:18 -0400 Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52EA36C0C5 for ; Tue, 10 May 2022 15:52:17 -0700 (PDT) Received: by mail-pf1-x433.google.com with SMTP id bo5so411893pfb.4 for ; Tue, 10 May 2022 15:52:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=4xY5bF9UYm6MAVtzgNfATpmkNYNH44rnKMWoXQzjxrI=; b=FItJqMaNmWv33SShK+ZO3am8AWGCUIO6YZHO6V6G0rTg06JmT35pvYET0rD5wPSRKz PgAkOYcRvOg9plTi0Fpz6xMt09s+1bmZfMjbmpygVANoPcqVB3lrBOHQIGZKzyRQC2cz DERZv562zIwz3Y/CWl4EbJM59XeNRgMvRXdDxJ6wv3iRRZ0LV6Sxz60uF4f3G6yS4Jn+ w45yjweNbsXo+XV4w/ghyJ+0ddsElP9+zEKMZyU97FyjBDsuZNWSuv+JBECRCBsFfFUP KnAri+dIhCAJdvlBSpRF1utp2WaUQN1LqnKN/58bGKpNR11aN2B1+2gLa7jOQ5itTpzd XzXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=4xY5bF9UYm6MAVtzgNfATpmkNYNH44rnKMWoXQzjxrI=; b=vNCduuXQNn0Nc8LT7BZKIzm1qP2dASXHSxL/dK6W26ROCThxMmcvDFaKv5N1OrHgNx NzXJrRKPAUy89GWOZgHe7IA4f7HRANqX0Mz6RnMF9jwsOpG2PW7Ps82YohbICVBN6nhS 8QVelSiXpL4mpb7/cR2rSW12IGdrsfLerDL7xR3fKImlUGUfmzbkFtHY4Mylr1c8u4wM kzfju5G/VKC8Bkqf6SfX6LBLaZ35RSJuy301GJvsrtcbqadxucMtYVIschmXAkehm1sM tfXO66vvvK0xQBX1t+vtmLcdcjcTVkYi9yLYqgwT/6ddTDHKco15fiALcMdJ+4Mzb3Ty WdbA== X-Gm-Message-State: AOAM532mu4TC7O/ufcgZ8rtEclutXpOqwRgmTVly8DmBJ5tXPt3XUwSr +bn9FP5d89BDeBDZq0FsRF7VTA== X-Google-Smtp-Source: ABdhPJxBD7xz21Is5XyKacXGuURKZ97TVB0rCPcvgYeeGxXp0XTbwkIq3b31s//zgRAl/JwRiH+h9Q== X-Received: by 2002:a05:6a00:1251:b0:50d:f2c2:7f4e with SMTP id u17-20020a056a00125100b0050df2c27f4emr22492045pfi.72.1652223136854; Tue, 10 May 2022 15:52:16 -0700 (PDT) Received: from [192.168.254.17] ([50.39.160.154]) by smtp.gmail.com with ESMTPSA id p2-20020a1709027ec200b0015e8d4eb229sm149967plb.115.2022.05.10.15.52.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 May 2022 15:52:16 -0700 (PDT) Message-ID: Date: Tue, 10 May 2022 15:52:15 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH] exfat: check if cluster num is valid Content-Language: en-US To: Namjae Jeon Cc: Sungjong Seo , linux-fsdevel@vger.kernel.org, stable@vger.kernel.org, linux-kernel@vger.kernel.org, syzbot+a4087e40b9c13aad7892@syzkaller.appspotmail.com References: <20220418173923.193173-1-tadeusz.struk@linaro.org> From: Tadeusz Struk In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/29/22 20:26, Namjae Jeon wrote: >> Could you please share how to reproduce this ? > Ping, If you apply this patch to your source, there is a problem. You > need to add +1 to EXFAT_DATA_CLUSTER_COUNT(sbi). > and please use is_valid_cluster() to check if cluster is valid instead of it. Ok, I will try a new version with is_valid_cluster() -- Thanks, Tadeusz