lkml.org 
[lkml]   [2019]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V2 0/4] Prevent vhost kthread from hogging CPU
On Fri, May 17, 2019 at 12:29:48AM -0400, Jason Wang wrote:
> 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
>
> _______________________________________________
> Virtualization mailing list
> Virtualization@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/virtualization

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2019-05-17 11:11    [W:0.089 / U:30.232 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site