netdev - Re: [PATCH] net: tuntap: Fix tun_net_fix

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: <20110601092524.GA6737@redhat.com>
Date:	Wed, 1 Jun 2011 12:25:24 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Michał Mirosław <mirq-linux@...e.qmqm.pl>
Cc:	netdev@...r.kernel.org, Herbert Xu <herbert@...dor.hengli.com.au>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Shan Wei <shanwei@...fujitsu.com>
Subject: Re: [PATCH] net: tuntap: Fix tun_net_fix_features()

On Tue, May 17, 2011 at 10:19:54AM +0200, Michał Mirosław wrote:
> tun->set_features are meant to limit not force the features.
> 
> Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>

Not sure when I'll find the time to test this but
just looking at the code, the patch makes sense
to me. So:

Acked-by: Michael S. Tsirkin <mst@...hat.com>

We probably want this in -stable too?

> ---
>  drivers/net/tun.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index 74e9405..f77c6d0 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -458,7 +458,7 @@ static u32 tun_net_fix_features(struct net_device *dev, u32 features)
>  {
>  	struct tun_struct *tun = netdev_priv(dev);
>  
> -	return (features & tun->set_features) | (features & ~TUN_USER_FEATURES);
> +	return features & (tun->set_features | ~TUN_USER_FEATURES);
>  }
>  
>  static const struct net_device_ops tun_netdev_ops = {
> -- 
> 1.7.2.5
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html