linux-kernel - [PATCH net 0/4] Prevent vhost kthread from hogging CPU

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Message-Id: <1557992862-27320-1-git-send-email-jasowang@redhat.com>
Date:   Thu, 16 May 2019 03:47:38 -0400
From:   Jason Wang <jasowang@...hat.com>
To:     mst@...hat.com, jasowang@...hat.com,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     pbonzini@...hat.com, stefanha@...hat.com
Subject: [PATCH net 0/4] Prevent vhost kthread from hogging CPU

Hi:

This series try to prvernt a guest triggerable CPU hogging through
vhost kthread. This is done by introducing and checking the weight
after each requrest. The patch has been tested with reproducer of
vsock and virtio-net. Only compile test is done for vhost-scsi.

Please review.

This addresses CVE-2019-3900.

Jason Wang (4):
  vhost: introduce vhost_exceeds_weight()
  vhost_net: fix possible infinite loop
  vhost: vsock: add weight support
  vhost: scsi: add weight support

 drivers/vhost/net.c   | 41 ++++++++++++++---------------------------
 drivers/vhost/scsi.c  | 21 ++++++++++++++-------
 drivers/vhost/vhost.c | 20 +++++++++++++++++++-
 drivers/vhost/vhost.h |  5 ++++-
 drivers/vhost/vsock.c | 28 +++++++++++++++++++++-------
 5 files changed, 72 insertions(+), 43 deletions(-)

-- 
1.8.3.1