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  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Sun, 29 Mar 2015 12:59:43 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	nicolas.dichtel@...nd.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net] netns: don't clear nsid too early on removal

From: Nicolas Dichtel <nicolas.dichtel@...nd.com>
Date: Thu, 26 Mar 2015 17:56:38 +0100

> With the current code, ids are removed too early.
> Suppose you have an ipip interface that stands in the netns foo and its link
> part in the netns bar (so the netns bar has an nsid into the netns foo).
> Now, you remove the netns bar:
>  - the bar nsid into the netns foo is removed
>  - the netns exit method of ipip is called, thus our ipip iface is removed:
>    => a netlink message is sent in the netns foo to advertise this deletion
>    => this netlink message requests an nsid for bar, thus a new nsid is
>       allocated for bar and never removed.
> 
> We must remove nsids when we are sure that nobody will refer to netns currently
> cleaned.
> 
> Fixes: 0c7aecd4bde4 ("netns: add rtnl cmd to add and get peer netns ids")
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>

Applied, thanks.
--
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

Powered by blists - more mailing lists