netdev - Re: [PATCH net] vxlan: eliminate cached dst leak

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Date:   Thu, 1 Jun 2017 15:07:08 -0400 (EDT)
From:   Lance Richardson <lrichard@...hat.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, pabeni@...hat.com
Subject: Re: [PATCH net] vxlan: eliminate cached dst leak

> From: "David Miller" <davem@...emloft.net>
> To: lrichard@...hat.com
> Cc: netdev@...r.kernel.org, pabeni@...hat.com
> Sent: Thursday, 1 June, 2017 2:46:48 PM
> Subject: Re: [PATCH net] vxlan: eliminate cached dst leak
> 
> From: Lance Richardson <lrichard@...hat.com>
> Date: Mon, 29 May 2017 13:25:57 -0400
> 
> > After commit 0c1d70af924b ("net: use dst_cache for vxlan device"),
> > cached dst entries could be leaked when more than one remote was
> > present for a given vxlan_fdb entry, causing subsequent netns
> > operations to block indefinitely and "unregister_netdevice: waiting
> > for lo to become free." messages to appear in the kernel log.
> > 
> > Fix by properly releasing cached dst and freeing resources in this
> > case.
> > 
> > Fixes: commit 0c1d70af924b ("net: use dst_cache for vxlan device")
> 
> In the future please do not put that "commit " string there, it's not
> needed.

Oops, sorry about that, I know I've made that mistake before (both times
because a checkpatch.pl warning in the body made me think I needed to
change the Fixes: tag as well).  Now I'm tempted to roll a checkpatch.pl
improvement...

> 
> > Signed-off-by: Lance Richardson <lrichard@...hat.com>
> 
> Applied and queued up for -stable, thank you.
>