netdev - Re: [v3.3-rc1 regression] TCP: too many of orphaned sockets

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Message-ID: <4F22B499.6080308@parallels.com>
Date:	Fri, 27 Jan 2012 18:28:41 +0400
From:	Glauber Costa <glommer@...allels.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	<netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [v3.3-rc1 regression] TCP: too many of orphaned sockets

On 01/27/2012 06:22 PM, Ingo Molnar wrote:
>
> * Ingo Molnar<mingo@...e.hu>  wrote:
>
>> ok, i've bisected it, and the bad commit is:
>>
>> 3dc43e3e4d0b52197d3205214fe8f162f9e0c334 is the first bad commit
>> commit 3dc43e3e4d0b52197d3205214fe8f162f9e0c334
>> Author: Glauber Costa<glommer@...allels.com>
>> Date:   Sun Dec 11 21:47:05 2011 +0000
>>
>>      per-netns ipv4 sysctl_tcp_mem
>
> Might be related to this detail in the .config:
>
>   # CONFIG_PROC_SYSCTL is not set
>
> So former tcp_init() code does not get run?
>
> Thanks,
>
> 	Ingo
Yeah, the problem is that the sysctl variables are used internally
even though CONFIG_PROC_SYSCTL is not set. This patch makes the
initialization happen in the per-netns sysctl initializer, so it will 
have bogus values with your config.

Let me send you a test patch shortly.
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