From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Gunthorpe <jgg@ziepe.ca>
Subject: Re: [PATCH v2 hmm 01/11] mm/hmm: fix use after free with struct hmm
 in the mmu notifiers
Date: Sat, 8 Jun 2019 08:33:05 -0300
Message-ID: <20190608113305.GA12419@ziepe.ca>
References: <20190606184438.31646-1-jgg@ziepe.ca>
 <20190606184438.31646-2-jgg@ziepe.ca>
 <20190608084948.GA32185@infradead.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Received: from mail-qt1-x843.google.com (mail-qt1-x843.google.com
 [IPv6:2607:f8b0:4864:20::843])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 17E018920A
 for <dri-devel@lists.freedesktop.org>; Sat,  8 Jun 2019 11:33:08 +0000 (UTC)
Received: by mail-qt1-x843.google.com with SMTP id u12so5406201qth.3
 for <dri-devel@lists.freedesktop.org>; Sat, 08 Jun 2019 04:33:08 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <20190608084948.GA32185@infradead.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>, Ralph Campbell <rcampbell@nvidia.com>, linux-rdma@vger.kernel.org, John Hubbard <jhubbard@nvidia.com>, Felix.Kuehling@amd.com, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Jerome Glisse <jglisse@redhat.com>, amd-gfx@lists.freedesktop.org
List-Id: dri-devel@lists.freedesktop.org
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