From: "Ma, WenwuX" <wenwux.ma@intel.com>
To: Luca Boccassi <bluca@debian.org>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>,
"Xia, Chenbo" <chenbo.xia@intel.com>,
dpdk stable <stable@dpdk.org>, "Hu, Jiayu" <jiayu.hu@intel.com>,
"Wang, Yinan" <yinan.wang@intel.com>,
"He, Xingguang" <xingguang.he@intel.com>
Subject: RE: [PATCH] net/vhost: fix null pointer dereference
Date: Mon, 8 Aug 2022 01:00:57 +0000 [thread overview]
Message-ID: <MN0PR11MB611027DEE6AA66AE9BD2D70AEB639@MN0PR11MB6110.namprd11.prod.outlook.com> (raw)
In-Reply-To: <38da7a720c298be79038c0a1de17477bbe177160.camel@debian.org>
> -----Original Message-----
> From: Luca Boccassi <bluca@debian.org>
> Sent: 2022年8月5日 23:09
> To: Ma, WenwuX <wenwux.ma@intel.com>
> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>; Xia, Chenbo
> <chenbo.xia@intel.com>; dpdk stable <stable@dpdk.org>; Hu, Jiayu
> <jiayu.hu@intel.com>; Wang, Yinan <yinan.wang@intel.com>; He, Xingguang
> <xingguang.he@intel.com>
> Subject: Re: [PATCH] net/vhost: fix null pointer dereference
>
> On Fri, 2022-08-05 at 10:12 +0000, Ma, WenwuX wrote:
> >
> > > -----Original Message-----
> > > From: Luca Boccassi <luca.boccassi@gmail.com>
> > > Sent: 2022年8月5日 18:04
> > > To: Ma, WenwuX <wenwux.ma@intel.com>
> > > Cc: Maxime Coquelin <maxime.coquelin@redhat.com>; Xia, Chenbo
> > > <chenbo.xia@intel.com>; dpdk stable <stable@dpdk.org>; Hu, Jiayu
> > > <jiayu.hu@intel.com>; Wang, Yinan <yinan.wang@intel.com>; He,
> > > Xingguang <xingguang.he@intel.com>
> > > Subject: Re: [PATCH] net/vhost: fix null pointer dereference
> > >
> > > On Fri, 5 Aug 2022 at 03:22, Wenwu Ma <wenwux.ma@intel.com> wrote:
> > > >
> > > > Because the async member of the vhost_virtqueue struct can be
> > > > freed in controlpath, so it should be protected by spinlock in
> > > > datapath, or, it may cause null pointer dereference in the
> > > > following vhost_poll_enqueue_completed().
> > > >
> > > > Fixes: b737fd613969 ("vhost: add unsafe async API to clear
> > > > packets")
> > > >
> > > > Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
> > > > ---
> > > > lib/vhost/virtio_net.c | 12 +++++++++---
> > > > 1 file changed, 9 insertions(+), 3 deletions(-)
> > >
> > > Hi,
> > >
> > > Is this for a stable branch? If so, which one? Please use
> > > --subject-prefix next time to clearly identify it.
> > >
> > Sorry, it is 21.11
>
> Does this issue affect only 21.11? Or main as well?
>
Only 21.11
> --
> Kind regards,
> Luca Boccassi
next prev parent reply other threads:[~2022-08-08 1:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-05 2:21 Wenwu Ma
2022-08-05 10:03 ` Luca Boccassi
2022-08-05 10:12 ` Ma, WenwuX
2022-08-05 15:09 ` Luca Boccassi
2022-08-08 1:00 ` Ma, WenwuX [this message]
2022-08-08 13:02 ` Luca Boccassi
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