Received: by 2002:a25:868d:0:0:0:0:0 with SMTP id z13csp97791ybk; Tue, 12 May 2020 16:33:59 -0700 (PDT) X-Google-Smtp-Source: APiQypIaXQF3yzJXgI3TULX40U+t4OXkJ1QUT4pG5KA1k9OR04AVgA1dmyhM1E7obkknRpTqOTq+ X-Received: by 2002:aa7:c402:: with SMTP id j2mr18244359edq.284.1589326439352; Tue, 12 May 2020 16:33:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1589326439; cv=none; d=google.com; s=arc-20160816; b=a7RIy/qE76alfnx0wiLWpM+giezhtNU8a+zD2/uibf3x4R2v9QNfqyk39Nvy7kHdQ6 7Yvu/d7gWTscmZX6WLaDJY0TsyiDG8JHy/GAQjAka6r5Z9a4p3Xw6tIxEeZiCKfU+iXP CfXtahNNJBtCKNGSSdzAUQZdtZZCJw36AjaE7CSu5yzg5DGtiUehG6L9Gqbis/5IoquK CcRplCQmB6amWm1OovIxSP1wr3fOpnMLjMTqst/jRntt0ePTamfsO3yhalP2dP7btA2q 11CEYPs78io5fI/WT+GXh1lpz0rrVY9GlGXU9jpkcO041j1QCAq4x57ICysJ/Gvz/Hmm caNA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:content-transfer-encoding :mime-version:subject:cc:to:references:in-reply-to:from:organization :dkim-signature; bh=IqdlvKpMoIpWtbvNPmb2zhCeciUUo4G6qYPFhXtCsiU=; b=KxwDgaLBVxgpjiN04tufhIvFuoAYqCr81T6fBrarCQD104+bKMEmdw0Ph4cCnaimFF YU+vrXTlb2S1UWMBgD+8aQW9XFRt5Qse9LZmcBUlYZdmm1XpgH/iwOX1sVZgUAn5Odv7 nS0fu/AuFaovX7teVo0/a6LWp1AqAmc/hAKn5HipdX+Pu6clWst59vFHd3Oi5D1jJHZw 4X72A7wNpNktrTehJ8TF00cCoynuvU6jmmTasfXhZ3/XB10QLY54U1JaN7kBpN9nVenp DL6L5ScAlyxouhCbNAyny6jUeiSVU9GnouqzQ7Kln6jfmpfTqLj/oe7QRP9JZC+Eh5wy plBA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=VXtwTr8e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id n21si5101506eja.402.2020.05.12.16.33.36; Tue, 12 May 2020 16:33:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=VXtwTr8e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731598AbgELXaB (ORCPT + 99 others); Tue, 12 May 2020 19:30:01 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:25592 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725938AbgELXaB (ORCPT ); Tue, 12 May 2020 19:30:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1589326200; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IqdlvKpMoIpWtbvNPmb2zhCeciUUo4G6qYPFhXtCsiU=; b=VXtwTr8ewAvyIP8+DHoZz54OZB6Pd8XtaWqpf14VDA1TYf0ixJ8CJZLDmxGnF6oNM2BcOY WrqWA727sLvUdhPbVSrGlHU+ge4P72lNVOATKTgJ5V/Dj8ReohtHtIw3s7SVtx8gsrbMxb k6YBYp1Kvzo7L4R5Dbhxs/MDlEXHE2Y= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-468-SvcAXEulM1S1hoMbITGG9A-1; Tue, 12 May 2020 19:29:56 -0400 X-MC-Unique: SvcAXEulM1S1hoMbITGG9A-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4483A1841920; Tue, 12 May 2020 23:29:55 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-112-59.rdu2.redhat.com [10.10.112.59]) by smtp.corp.redhat.com (Postfix) with ESMTP id 853A15C1B5; Tue, 12 May 2020 23:29:53 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <31941725-BEB0-4839-945A-4952C2B5ADC7@lca.pw> References: <31941725-BEB0-4839-945A-4952C2B5ADC7@lca.pw> To: Qian Cai Cc: dhowells@redhat.com, Alexander Viro , linux-fsdevel@vger.kernel.org, LKML , Linux-Next Mailing List , Stephen Rothwell Subject: Re: Null-ptr-deref due to "vfs, fsinfo: Add an RCU safe per-ns mount list" MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Wed, 13 May 2020 00:29:52 +0100 Message-ID: <2961585.1589326192@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Qian Cai wrote: > Reverted the linux-next commit ee8ad8190cb1 (=E2=80=9Cvfs, fsinfo: Add an= RCU safe per-ns mount list=E2=80=9D) fixed the null-ptr-deref. Okay, I'm dropping this commit for now. David