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 6AB67C433EF for ; Tue, 10 May 2022 22:50:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236976AbiEJWui (ORCPT ); Tue, 10 May 2022 18:50:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237370AbiEJWu0 (ORCPT ); Tue, 10 May 2022 18:50:26 -0400 Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 65B4524EA0C for ; Tue, 10 May 2022 15:50:22 -0700 (PDT) Received: by mail-pf1-x42f.google.com with SMTP id x52so377986pfu.11 for ; Tue, 10 May 2022 15:50:22 -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=LQpLllgONrrjRjbzd5pzMpCmxzKfwBycUBev+97SkuU=; b=z21WwdqiIt7hG8RyC6XRgynBysMtLb4WUdBq3R4mmAUOSwun5PMZQV8A2j2dARpDOT lTWlb2Q289lKNj9oFMH0leEp9HAZhnc5PB6nP7hBYlQXjuW4WWPesoYdraA+4V1cmudM JF9pRhLXnLDbWBmT23bGm95w+YUBPdsOj6HR+L26np4nwSk/TSVATtQjZwXua5OSHTKe E6QtZ1Kxqa03O4vR1utHDoIooL1Ybic431X/sxQ4I/RMNae5TtJSFyLoac/lb89gRQ0T XcDSk6R5x6PR4MlsAHjnvkfqanFlo3rlsbFEjf52HzO4yUiY3cVlbsSP5gMqEA5vFdEJ UyeA== 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=LQpLllgONrrjRjbzd5pzMpCmxzKfwBycUBev+97SkuU=; b=lPnyO30vQCcmREmlYGXtrKG5dTDbschA0nciguYALc8H39j9D8Sc3T0I7DE8OP4AFI DE090a5WnRjYPJ9vu+ZZk+DXDiMOhccuK75rJ3SvIahlZsTUCzX/4RYW89C95gA4kgW/ bqmhKVEF2z2eneb0oZUsnzMxixexwEKELE0Qxng8QrGXFlYUBh0FrgW2KnW8vVuKU62U ZUUqif0r/FcIF4WggeCIF5ZEb4Zxqj2swIWl7lDv0u1AphScEWgIwkQcV/EI1K4q7rWJ SRztVKzso+lgUHC0Kha0+ENbuf9PcQKHLa/eR5JiJsXiJbABPmHfzgVRCCaHUHoHnYZM FGdg== X-Gm-Message-State: AOAM53026fwEpqi5hUVA1bPxxwVvpTOxetv8QCoUIORQAnTllJQ7P22U m6hkL5hL1d5EAI55y1MAfjVCoLe0PQXukw== X-Google-Smtp-Source: ABdhPJwki9DMZm5zvN7+V4rQQ7syaEnadJxZTu4l9mmW5NhMxkDW4LiJFBV8Wl+u9JHhr/3ILqfxGA== X-Received: by 2002:a05:6a00:1991:b0:50e:697:53f9 with SMTP id d17-20020a056a00199100b0050e069753f9mr22516734pfl.22.1652223021711; Tue, 10 May 2022 15:50:21 -0700 (PDT) Received: from [192.168.254.17] ([50.39.160.154]) by smtp.gmail.com with ESMTPSA id x12-20020a62860c000000b0050dc762818fsm74576pfd.105.2022.05.10.15.50.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 May 2022 15:50:21 -0700 (PDT) Message-ID: <7c5a9967-b5b6-50f3-2492-cbcdffa24080@linaro.org> Date: Tue, 10 May 2022 15:50:20 -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 Hi Jeon, On 4/21/22 22:54, Namjae Jeon wrote: >> Call Trace: >> __dump_stack lib/dump_stack.c:77 [inline] >> dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118 >> print_address_description+0x81/0x3c0 mm/kasan/report.c:233 >> __kasan_report mm/kasan/report.c:419 [inline] >> kasan_report+0x1a4/0x1f0 mm/kasan/report.c:436 >> __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 >> exfat_clear_bitmap+0x147/0x490 fs/exfat/balloc.c:174 >> exfat_free_cluster+0x25a/0x4a0 fs/exfat/fatent.c:181 >> __exfat_truncate+0x99e/0xe00 fs/exfat/file.c:217 >> exfat_truncate+0x11b/0x4f0 fs/exfat/file.c:243 >> exfat_setattr+0xa03/0xd40 fs/exfat/file.c:339 >> notify_change+0xb76/0xe10 fs/attr.c:336 >> do_truncate+0x1ea/0x2d0 fs/open.c:65 > Could you please share how to reproduce this ? Sorry, I missed this. The reproducer [1] can be found on the syzbot report website [2] [1] https://syzkaller.appspot.com/text?tag=ReproC&x=1353dfdf700000 [2] https://syzkaller.appspot.com/bug?id=50381fc73821ecae743b8cf24b4c9a04776f767c -- Thanks, Tadeusz