patches for DPDK stable branches
 help / color / Atom feed
From: David Marchand <david.marchand@redhat.com>
To: "Burakov, Anatoly" <anatoly.burakov@intel.com>
Cc: wangyunjian <wangyunjian@huawei.com>,
	Luca Boccassi <bluca@debian.org>,
	 Kevin Traynor <ktraynor@redhat.com>, dev <dev@dpdk.org>,
	 Hemant Agrawal <hemant.agrawal@nxp.com>,
	Sachin Saxena <sachin.saxena@nxp.com>,
	"Lilijun (Jerry)" <jerry.lilijun@huawei.com>,
	xudingke <xudingke@huawei.com>,  dpdk stable <stable@dpdk.org>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH 1/2] vfio: fix check for vfio_group_fd
Date: Fri, 22 May 2020 09:36:48 +0200
Message-ID: <CAJFAV8zxCp6ABvJdTyHHw+io8_OGL44dCLzkSYnDcL8Gj2hw0Q@mail.gmail.com> (raw)
In-Reply-To: <f1d7e035-dbb5-000e-3cb2-0b6d9148fcfe@intel.com>

On Thu, May 21, 2020 at 2:54 PM Burakov, Anatoly
<anatoly.burakov@intel.com> wrote:
>
> On 19-May-20 8:43 AM, David Marchand wrote:
> > On Tue, May 19, 2020 at 5:42 AM wangyunjian <wangyunjian@huawei.com> wrote:
> >>
> >> From: Yunjian Wang <wangyunjian@huawei.com>
> >>
> >> The issue is that a file descriptor at 0 is a valid one. Currently
> >> the file not found, the return value will be set to 0. As a result,
> >> it is impossible to distinguish between a correct descriptor and a
> >> failed return value. Fix it to return -ENOENT instead of 0.
> >>
> >> Fixes: b758423bc4fe ("vfio: fix race condition with sysfs")
> >> Fixes: ff0b67d1c868 ("vfio: DMA mappinge")
> >> Cc: stable@dpdk.org
> >
> > This patch reverts the (marked for stable) fix b758423bc4fe ("vfio:
> > fix race condition with sysfs") and comes with a different fix.
> >
> > - Kevin, Luca, I would put this b758423bc4fe backport on hold.
> >
> > - Anatoly, I don't want to put 20.05 at risk.
> > My simple question for 20.05 is, should we revert b758423bc4fe?
>
> No, let's not revert anything.
>
> As far as i can tell, this patch is a more complete fix, but it
> essentially does the same thing, just in a different (and better) way.
> Still, i haven't reviewed it in detail.
>
> >
> > - This patchset will go to 20.08 as I don't feel confident in taking it now.
> >
>
> Yes, let's leave it for 20.08.

Thanks for the analysis Anatoly.


-- 
David Marchand


  reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-19  3:42 wangyunjian
2020-05-19  7:43 ` David Marchand
2020-05-21 12:53   ` Burakov, Anatoly
2020-05-22  7:36     ` David Marchand [this message]
2020-05-27 10:45     ` Kevin Traynor
2020-07-29 11:43       ` wangyunjian
2020-09-17 11:44 ` Burakov, Anatoly

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAJFAV8zxCp6ABvJdTyHHw+io8_OGL44dCLzkSYnDcL8Gj2hw0Q@mail.gmail.com \
    --to=david.marchand@redhat.com \
    --cc=anatoly.burakov@intel.com \
    --cc=bluca@debian.org \
    --cc=dev@dpdk.org \
    --cc=hemant.agrawal@nxp.com \
    --cc=jerry.lilijun@huawei.com \
    --cc=ktraynor@redhat.com \
    --cc=sachin.saxena@nxp.com \
    --cc=stable@dpdk.org \
    --cc=wangyunjian@huawei.com \
    --cc=xudingke@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

patches for DPDK stable branches

Archives are clonable:
	git clone --mirror http://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ http://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable


Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/ public-inbox