From: Luca Boccassi <bluca@debian.org>
To: Tiwei Bie <tiwei.bie@intel.com>,
Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: stable@dpdk.org, Zhike Wang <wangzk320@163.com>
Subject: Re: [dpdk-stable] [16.11 LTS PATCH v2] vhost: fix vring requests validation broken if no FD
Date: Fri, 15 Nov 2019 14:04:47 +0000 [thread overview]
Message-ID: <36d63ecbf14bcd2b32f5ab116a9c97ee4e56a62c.camel@debian.org> (raw)
In-Reply-To: <20191115122408.GA1432@___>
On Fri, 2019-11-15 at 20:24 +0800, Tiwei Bie wrote:
> On Fri, Nov 15, 2019 at 11:36:15AM +0100, Maxime Coquelin wrote:
> > From: Zhike Wang <
> > wangzk320@163.com
> > >
> >
> > When VHOST_USER_VRING_NOFD_MASK is set, the fd_num is 0,
> > so validate_msg_fds() will return error. In this case,
> > the negotiation of vring message between vhost user front end and
> > back end would fail, and as a result, vhost user link could NOT be
> > up.
> >
> > How to reproduce:
> > 1.Run dpdk testpmd insides VM, which locates at host with ovs+dpdk.
> > 2.Notice that inside ovs there are endless logs regarding failure
> > to
> > handle VHOST_USER_SET_VRING_CALL, and link of vm could NOT be up.
> >
> > Fixes: 1bf11cfb7c7c ("vhost: fix possible denial of service by
> > leaking FDs")
> > Cc:
> > stable@dpdk.org
> >
> >
> > Signed-off-by: Zhike Wang <
> > wangzk320@163.com
> > >
> > Reviewed-by: Maxime Coquelin <
> > maxime.coquelin@redhat.com
> > >
> > ---
> > lib/librte_vhost/vhost_user.c | 13 ++++++++++---
> > 1 file changed, 10 insertions(+), 3 deletions(-)
>
> Reviewed-by: Tiwei Bie <
> tiwei.bie@intel.com
> >
>
> Thanks!
> Tiwei
Thanks, applied
--
Kind regards,
Luca Boccassi
prev parent reply other threads:[~2019-11-15 14:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-15 10:36 Maxime Coquelin
2019-11-15 12:24 ` Tiwei Bie
2019-11-15 14:04 ` Luca Boccassi [this message]
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