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From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com,
	virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: pbonzini@redhat.com, stefanha@redhat.com
Subject: [PATCH V2 0/4] Prevent vhost kthread from hogging CPU
Date: Fri, 17 May 2019 00:29:48 -0400	[thread overview]
Message-ID: <1558067392-11740-1-git-send-email-jasowang@redhat.com> (raw)

Hi:

This series try to prevent 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.

Changs from V1:
- fix user-ater-free in vosck patch

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


             reply	other threads:[~2019-05-17  4:30 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-17  4:29 Jason Wang [this message]
2019-05-17  4:29 ` [PATCH V2 1/4] vhost: introduce vhost_exceeds_weight() Jason Wang
2019-05-17  4:29 ` [PATCH V2 2/4] vhost_net: fix possible infinite loop Jason Wang
2019-05-17  4:29 ` [PATCH V2 3/4] vhost: vsock: add weight support Jason Wang
2019-05-17  4:29 ` [PATCH V2 4/4] vhost: scsi: " Jason Wang
2019-05-17  9:10 ` [PATCH V2 0/4] Prevent vhost kthread from hogging CPU Stefan Hajnoczi
2019-05-18 20:27 ` David Miller
2019-05-23 17:22   ` Michael S. Tsirkin
2019-05-20 12:52 ` Michael S. Tsirkin
2019-05-23  2:37   ` Jason Wang

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