Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp757997ybb; Wed, 8 Apr 2020 09:18:16 -0700 (PDT) X-Google-Smtp-Source: APiQypL2hxK57nWplG8A+EtcrHaJ1sZ3CJHaHBmrHcjxSShE4ch830MCsHYIJAherVTCOaYCBuiC X-Received: by 2002:a9d:6ad2:: with SMTP id m18mr6647498otq.28.1586362696757; Wed, 08 Apr 2020 09:18:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1586362696; cv=none; d=google.com; s=arc-20160816; b=UWbvvNOchHRGcCLQxKsrWhuvt2iPSJ5G2i9fy1zlU6HSV26KvHORLY7rpRqt6OCPJ8 XDpwu47jJKCBBeXZRwFPmuCiCjnWKBmTZx54wwPnP5Mif8UrAkxxmZbktsJCtZEkvDgR Sf2wLWuP215CgRd/SJdqFuQhfrmbO9CWPklRb/plokwpp71CWyLXi+M/DWeaYFILA78O oJy2jhUePISNe72OAC4s3C1ky5nDcoStdk1rwcPpNpPLzHC5GI8dR7eG7ake2LK2gmH0 dF3bSA1OVAIISJempJTl8eEkLY3oqmoCkk1zRQp5wYpz0s6aNacBRnDmZ2euSSyPQKfj 0HBw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=zfS9gBkZK1lwoGz/dZuqTLB47lxBb3FVqgkYPAxmytk=; b=XZ8yLDdHNRrB82nndVgs5no4JWLGTIvRo04Th2EvChPLPgGZUPA3sa6Zsq3Ke0SfvN iv0ZABQIuuC0UCC5BrJ5qwZV0lQPRDCvR32p8UH7hvrJq1fLHnY4HIvEhUZ7yKKaQYtq o/iL3apxVeW220Aiao6T9UEbBQ0Sntmx2hC5VM66So8TWQPrRVIINW0e//kPDuCkyH7I 9U7KemL4fLT8ldd2d9U7fesY9+fvIl51cWt2qURW7+6HvjDJJfmAR7z0jqO6XqHfB8h6 gKHaAhWNvJkmSaa2LGi6iuo6MgNYS/1Rukyped25BCS/0BvyZs8l19F9k7UHY/uCguof iSaw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h10si255678otk.323.2020.04.08.09.17.53; Wed, 08 Apr 2020 09:18:16 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728071AbgDHNte (ORCPT + 99 others); Wed, 8 Apr 2020 09:49:34 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:60260 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727505AbgDHNte (ORCPT ); Wed, 8 Apr 2020 09:49:34 -0400 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jMB4a-00E49z-DG; Wed, 08 Apr 2020 13:48:56 +0000 Date: Wed, 8 Apr 2020 14:48:56 +0100 From: Al Viro To: Yun Levi Cc: "David S. Miller" , Jakub Kicinski , Guillaume Nault , Nicolas Dichtel , Eric Dumazet , Li RongQing , Thomas Gleixner , Johannes Berg , David Howells , daniel@iogearbox.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH] netns: dangling pointer on netns bind mount point. Message-ID: <20200408134856.GB23230@ZenIV.linux.org.uk> References: <20200407023512.GA25005@ubuntu> <20200407030504.GX23230@ZenIV.linux.org.uk> <20200407031318.GY23230@ZenIV.linux.org.uk> <20200407040354.GZ23230@ZenIV.linux.org.uk> <20200407182609.GA23230@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 08, 2020 at 02:59:17PM +0900, Yun Levi wrote: > Thank you for great comments. Thanks to you I understand what i missed. > > I try to generate problem on mainline But, as you explained that > situation isn't happen, > > Maybe my other things which I made generate some problem (freeing > network namespace..) > > Thanks for great answering and sharing. > > If I meet the situation, at that time I'll share. Thank you very much! > > P.S. If I have a question, Could I ask via e-mail like this? Sure, no problem...