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 X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70E0AC433F5 for ; Mon, 13 Sep 2021 07:24:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5344360FF2 for ; Mon, 13 Sep 2021 07:24:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237601AbhIMH0N (ORCPT ); Mon, 13 Sep 2021 03:26:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60504 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237535AbhIMH0L (ORCPT ); Mon, 13 Sep 2021 03:26:11 -0400 Received: from mail-pg1-x536.google.com (mail-pg1-x536.google.com [IPv6:2607:f8b0:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4A8CC061574 for ; Mon, 13 Sep 2021 00:24:56 -0700 (PDT) Received: by mail-pg1-x536.google.com with SMTP id h3so8619311pgb.7 for ; Mon, 13 Sep 2021 00:24:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rne45CFHVF3Ed+57mqPI4S8t0BZnsiIJa5Mce5cnMFs=; b=I0LVTvJN3u3LWC1FrrPIH1QhzeKn39Yh9Z96gRmixJ15fAXrUJMXNtI+W/YWdVtxeY 9VDd2Kfd3QsQcwl1OAkNh+YARxq3iINnSVB3LK/DRiEnmMWgMPTGQMe1GM7wm2XPRqsE scpbov5JJEzBge1BaTGNUEkbhGxAo99oa5h0z8/drxKk7Le+uE09iL9JhzABQre+oMdF w/L4axgqjsQ7bqsgTuQQQpWDcjrwVkWQwSedgzDnJsuy97Dydbui5aM6zQuY/jG5TsSu 0nnf2JmMW5NbXCzr603ZVH7j4uOg2N/XRIQyS1DUIBl8ze8V58s8EcBJLF3+g/Rwi41Z vstg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rne45CFHVF3Ed+57mqPI4S8t0BZnsiIJa5Mce5cnMFs=; b=8HREVQKVoPJpdL7FH6XZjTVu7lI/9m57Kgz55MGdwIp7dPoyYITqP0PKmzea2lZ843 erZ+qFUucUyiZRjgg6P0vL/bLzT8IKm8RPr1MIR2FWvjUlqybKipOlKVPkN0ieFP0Xzh T8F8G4n3W06Ii7SauwfmqMwshTHz0ajJG6RJhwd5yF+M7LJL/demJ7wh7exsDg/z8n1U dGp0ck47rqOQbblWC9DMJMYwkHhHF+jFjVkotBOPDuJUqM7eaHkout5NCyFT19Z/n2j7 NY1c6G3oxmL1ZMJIUe3Epr792iHfVk5GGdBxKiuisf8mXkB30WRJu2SbOsMWjAOphzBa WYlQ== X-Gm-Message-State: AOAM532vzHorq3FjMqv4WBHQYtY+iifcnJ4mLTmEjEXBLCmZ6OzisIU9 NmxrgbzBFS1VSG5vlbMn4dk= X-Google-Smtp-Source: ABdhPJz3kPSM1iVUOv123Y56zIId76DGu9yYy2/Q5GwwNmIPqpUoV376MCwV7pvmNJQoe5h9wCF0tw== X-Received: by 2002:a62:e302:0:b0:3f2:628b:3103 with SMTP id g2-20020a62e302000000b003f2628b3103mr9843177pfh.39.1631517896240; Mon, 13 Sep 2021 00:24:56 -0700 (PDT) Received: from tj.ccdomain.com ([103.220.76.197]) by smtp.gmail.com with ESMTPSA id u12sm5687365pjx.31.2021.09.13.00.24.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Sep 2021 00:24:55 -0700 (PDT) From: Yue Hu To: xiang@kernel.org, chao@kernel.org Cc: linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org, huyue2@yulong.com, zhangwen@yulong.com, zbestahu@163.com Subject: [PATCH] erofs: fix compacted_{4b_initial, 2b} when compacted_4b_initial > totalidx Date: Mon, 13 Sep 2021 15:24:05 +0800 Message-Id: <20210913072405.1128-1-zbestahu@gmail.com> X-Mailer: git-send-email 2.29.2.windows.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yue Hu mkfs.erofs will treat compacted_4b_initial & compacted_2b as 0 if compacted_4b_initial > totalidx, kernel should be aligned with it accordingly. Signed-off-by: Yue Hu --- fs/erofs/zmap.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c index 9fb98d8..4f941b6 100644 --- a/fs/erofs/zmap.c +++ b/fs/erofs/zmap.c @@ -369,7 +369,10 @@ static int compacted_load_cluster_from_disk(struct z_erofs_maprecorder *m, if (compacted_4b_initial == 32 / 4) compacted_4b_initial = 0; - if (vi->z_advise & Z_EROFS_ADVISE_COMPACTED_2B) + if (compacted_4b_initial > totalidx) { + compacted_4b_initial = 0; + compacted_2b = 0; + } else if (vi->z_advise & Z_EROFS_ADVISE_COMPACTED_2B) compacted_2b = rounddown(totalidx - compacted_4b_initial, 16); else compacted_2b = 0; -- 1.9.1