linux-kernel - Re: [PATCH] netns: fix net_alloc

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Message-Id: <20120126.133722.1476758144256840158.davem@davemloft.net>
Date:	Thu, 26 Jan 2012 13:37:22 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	sjur.brandeland@...ricsson.com, levinsasha928@...il.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	davej@...hat.com, sjurbren@...il.com, ebiederm@...ssion.com,
	xemul@...nvz.org
Subject: Re: [PATCH] netns: fix net_alloc_generic()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 26 Jan 2012 11:41:38 +0100

> [PATCH] netns: fix net_alloc_generic()
> 
> When a new net namespace is created, we should attach to it a "struct
> net_generic" with enough slots (even empty), or we can hit the following
> BUG_ON() :
> 
...
> net_alloc_generic() should take into account the maximum index into the
> ptr array, as a subsystem might use net_generic() anytime.
> 
> This also reduces number of reallocations in net_assign_generic()
> 
> Reported-by: Sasha Levin <levinsasha928@...il.com>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied and queued up for -stable, thanks.
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