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=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 0B19CC606BD for ; Mon, 8 Jul 2019 16:37:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D036B217D4 for ; Mon, 8 Jul 2019 16:37:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562603853; bh=opYu2XkI3tRmE6/60hQ0j4L5QYeD4t6qcBLs8sVGjuE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=SDBd8Im+OcQCuLDXxMJkOhGJXbZ7NtlB37WVo7RNPGgNHY8J699mZIEYog7j6r8Ga C8SF7mn1DjdXeJKU1Qp0jjHwEKJZfib51hNIrNM2ps1zuKRS8MZCUbaCSz7YipZ1oa z8gpBGcEyK2+UrEqfHs0naKUwoCkFzp7XkcaZ6Ks= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729188AbfGHQhc (ORCPT ); Mon, 8 Jul 2019 12:37:32 -0400 Received: from mail-qk1-f196.google.com ([209.85.222.196]:43388 "EHLO mail-qk1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725807AbfGHQhc (ORCPT ); Mon, 8 Jul 2019 12:37:32 -0400 Received: by mail-qk1-f196.google.com with SMTP id m14so13765730qka.10 for ; Mon, 08 Jul 2019 09:37:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=d77j269b8ii4jGD4hk2Ust+/CV3shrzBdzDbm/56554=; b=uYCSLFLo5IWrRj9BTn09XZfD5mBsOBwhtDYOHefm16fOEt9+8bUk3UTtmHF2I5Ujlm CA4sFrts+vEyrL0L7u7u7nP7lrP0F6+L1hn6v6V4jepzWMgJDi4zhowOQOvnwNqC0Fs6 iVHx9LjyEvX6DNm1ZJKBwhRLJ6KCFa8U5PyVqOPMJyxKxCYUshYLiCfFQqVj6p4vvw2o F4i7nr/glAa1/zAzP/ZuB+enz3ixQ56845Z7vsY77ziD9hFk1qLCJILZTxt2dN75FCig oH6HnTje0x4pfjDxOZokrIs4UI7dy549syh5xokqYnCAwjYtGwh9fsNK++ababrCILWD mB8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=d77j269b8ii4jGD4hk2Ust+/CV3shrzBdzDbm/56554=; b=lf7km//Yycd4nCx72Qt+bsrHGa3oWIw6yd59hbwjBx9e2PC/mJIZIkDYeXxN6arK8b MTCbWkYghH9C4FZ9/arxiRjT+78ZUcBsA0ngWzMyTaRPdhnd7FgYD+Lz+pSrnGxenhrI 1tjX+LtwvHinxg//EHJVd+18bn6rnKAJ4G10X2kYpmSFzcDSzlTc57JlJswQ1tjrHuEg mQ6nVPuSL1RSh+Mv3/hKVL65+0JykXR5G6ekWEmx+AYMUqmBR+s5L6Mp6uRhQvRKSZpR MV+QCYxnKGCx3H57tdGyLx/NbPcv6xsvr+3m2qMiUuCCQInydsN92jbFU4k2vu1Ee444 ED3g== X-Gm-Message-State: APjAAAVXxB9zaW4RNKchn7P3sBfcOVAYx+kOrvvN6Bk3YiIL2Ew0b2Ao 8s+knuFKmMcAfFZAC5heX3A= X-Google-Smtp-Source: APXvYqyg6ZU38Ki/RRPgH24okSlx6akBtZnsqHskOvYhkaNo+9/Cad7dv/wCSe6v2WEcze0uXlCjbw== X-Received: by 2002:a37:f516:: with SMTP id l22mr13870793qkk.123.1562603851050; Mon, 08 Jul 2019 09:37:31 -0700 (PDT) Received: from localhost ([2620:10d:c091:500::2:fa50]) by smtp.gmail.com with ESMTPSA id p59sm2249911qtd.75.2019.07.08.09.37.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Jul 2019 09:37:29 -0700 (PDT) Date: Mon, 8 Jul 2019 09:37:28 -0700 From: Tejun Heo To: Peng Wang Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] kernfs: fix potential null pointer dereference Message-ID: <20190708163728.GC657710@devbig004.ftw2.facebook.com> References: <20190708151611.13242-1-rocking@whu.edu.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190708151611.13242-1-rocking@whu.edu.cn> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 08, 2019 at 11:16:11PM +0800, Peng Wang wrote: > Get root safely after kn is ensureed to be not null. > > Signed-off-by: Peng Wang Acked-by: Tejun Heo Thanks. -- tejun