From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?q?Adalbert=20Laz=C4=83r?= <alazar@bitdefender.com>
Subject: [PATCH v2] vsock/virtio: fix kernel panic from
	virtio_transport_reset_no_sock
Date: Wed,  6 Mar 2019 12:13:53 +0200
Message-ID: <20190306101353.9938-1-alazar__46327.4709576339$1555717276$gmane$org@bitdefender.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <virtualization-bounces@lists.linux-foundation.org>
List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/virtualization>,
	<mailto:virtualization-request@lists.linux-foundation.org?subject=unsubscribe>
List-Archive: <http://lists.linuxfoundation.org/pipermail/virtualization/>
List-Post: <mailto:virtualization@lists.linux-foundation.org>
List-Help: <mailto:virtualization-request@lists.linux-foundation.org?subject=help>
List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/virtualization>,
	<mailto:virtualization-request@lists.linux-foundation.org?subject=subscribe>
Sender: virtualization-bounces@lists.linux-foundation.org
Errors-To: virtualization-bounces@lists.linux-foundation.org
To: Stefan Hajnoczi <stefanha@redhat.com>, "David S . Miller" <davem@davemloft.net>, Stefano Garzarella <sgarzare@redhat.com>
Cc: kvm@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, =?UTF-8?q?Adalbert=20Laz=C4=83r?= <alazar@bitdefender.com>, Alexandru Herghelegiu <aherghelegiu@bitdefender.com>
List-Id: virtualization@lists.linuxfoundation.org
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=