Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <f927bec5-1078-dcb9-6f3e-a64d304efd5b@huawei.com>
Date:   Wed, 13 Apr 2022 22:42:47 +0800
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101
 Thunderbird/91.2.1
Subject: Re: [PATCH -next 0/2] fix nfsv4 bugs of opening with O_ACCMODE flag
To:     Lyu Tao <tao.lyu@epfl.ch>,
        Trond Myklebust <trond.myklebust@hammerspace.com>,
        "anna@kernel.org" <anna@kernel.org>,
        "bjschuma@netapp.com" <bjschuma@netapp.com>
CC:     "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "liuyongqiang13@huawei.com" <liuyongqiang13@huawei.com>,
        "yi.zhang@huawei.com" <yi.zhang@huawei.com>,
        "zhangxiaoxu5@huawei.com" <zhangxiaoxu5@huawei.com>
References: <20220329113208.2466000-1-chenxiaosong2@huawei.com>
 <68b65889-3b2c-fb72-a0a8-d0afc15a03e0@huawei.com>
 <e0c2d7ec62b447cabddbc8a9274be955@epfl.ch>
 <0b6546f7-8a04-9d6e-50c3-483c8a1a6591@huawei.com>
 <d73a51a2-6b63-b536-61e6-3d18563f027d@huawei.com>
 <3ee78045f18b4932b1651de776ee73c4@epfl.ch>
From:   "chenxiaosong (A)" <chenxiaosong2@huawei.com>
In-Reply-To: <3ee78045f18b4932b1651de776ee73c4@epfl.ch>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Content-Transfer-Encoding: 8bit
Precedence: bulk


在 2022/4/13 22:16, Lyu Tao 写道:
> Got it. Thanks!
> 
> 
> By the way, is this bug related to commit ac795161c936? Or have you 
> tested NFS using your PoC on the version only with commit ab0fc21bc710 
> (without commit ac795161c936).
> 
> 
> Best,
> 
> Tao
> 

I am also confused ac795161c936 ("NFSv4: Handle case where the lookup of 
a directory fails"), this bug reported by you is not related it, I don't 
know why Trond create this patch.