netdev - Re: [PATCH net-next] vrf: use dev_replace

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <24911380-995a-ece0-41ab-42f6ad6972ff@gmail.com>
Date:   Tue, 7 Dec 2021 09:04:43 -0700
From:   David Ahern <dsahern@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        David Ahern <dsahern@...nel.org>
Subject: Re: [PATCH net-next] vrf: use dev_replace_track() for better tracking

On 12/6/21 10:56 PM, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> vrf_rt6_release() and vrf_rtable_release() changes dst->dev
> 
> Instead of
> 
> dev_hold(ndev);
> dev_put(odev);
> 
> We should use
> 
> dev_replace_track(odev, ndev, &dst->dev_tracker, GFP_KERNEL);
> 
> If we do not transfer dst->dev_tracker to the new device,
> we will get warnings from ref_tracker_dir_exit() when odev
> is finally dismantled.
> 
> Fixes: 9038c320001d ("net: dst: add net device refcount tracking to dst_entry")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---
>  drivers/net/vrf.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 


Reviewed-by: David Ahern <dsahern@...nel.org>