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=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 7565AC3A5A0 for ; Mon, 19 Aug 2019 14:58:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47F2020843 for ; Mon, 19 Aug 2019 14:58:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566226693; bh=30KXwFIbBf11OqNG82++ljRpNTjhb/YlByVeH2DvVjY=; h=Subject:To:Cc:References:From:Date:In-Reply-To:List-ID:From; b=LtryvlS5ma/qh7qd9JjwQ0sSi5Y4ZY9bHRsUhwWUWnEpPdaB8YRmgUrshJLr9HtqK G8S1oQkGFgHFQCAfH5Px9C8EI6/qtBC77A/ZqX7iqNlj5xynSqGtV3CBAk1Ey6Xo/g wpBPCMR7YyNntrhtE/S00A0aK3qaFXj6TYewrwZY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727606AbfHSO6J (ORCPT ); Mon, 19 Aug 2019 10:58:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:46924 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725536AbfHSO6J (ORCPT ); Mon, 19 Aug 2019 10:58:09 -0400 Received: from [192.168.0.101] (unknown [180.111.132.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5F9E12082A; Mon, 19 Aug 2019 14:58:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566226688; bh=30KXwFIbBf11OqNG82++ljRpNTjhb/YlByVeH2DvVjY=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=e5cgjRL4TTBuhsXHXIIXE72dDJYCh1Conr5rBZPraLrYdJ7VKbKaG9gghWkaTL60a p6UYq+npZCh4Ng4iSSFyOWV6aMHyJALe8FKZDTo7/2+fB12WMZ67Flyv/4TnIaI7/r y7fXeIvuwEB7dkT9G9Ma+/UMVs/NQHKmX9QR+PAA= Subject: Re: [PATCH 6/6] staging: erofs: avoid endless loop of invalid lookback distance 0 To: Gao Xiang , Chao Yu , Greg Kroah-Hartman , devel@driverdev.osuosl.org, linux-fsdevel@vger.kernel.org Cc: LKML , linux-erofs@lists.ozlabs.org, Miao Xie , weidu.du@huawei.com, Fang Wei , stable@vger.kernel.org References: <20190819080218.GA42231@138> <20190819103426.87579-1-gaoxiang25@huawei.com> <20190819103426.87579-7-gaoxiang25@huawei.com> From: Chao Yu Message-ID: Date: Mon, 19 Aug 2019 22:58:04 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20190819103426.87579-7-gaoxiang25@huawei.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 2019-8-19 18:34, Gao Xiang wrote: > As reported by erofs-utils fuzzer, Lookback distance should > be a positive number, so it should be actually looked back > rather than spinning. > > Fixes: 02827e1796b3 ("staging: erofs: add erofs_map_blocks_iter") > Cc: # 4.19+ > Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Thanks,