netdev - Re: [PATCH net-next] avoid to hang up on sending since sysctl configuration overflow.

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Message-Id: <20130128.231623.1606743073399806303.davem@davemloft.net>
Date:	Mon, 28 Jan 2013 23:16:23 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	raise.sail@...il.com
Cc:	netdev@...r.kernel.org, eric.dumazet@...il.com,
	panweiping3@...il.com, bingtian.ly@...bao.com
Subject: Re: [PATCH net-next] avoid to hang up on sending since sysctl
 configuration overflow.

From: Li Yu <raise.sail@...il.com>
Date: Thu, 24 Jan 2013 14:35:28 +0800

> From: bingtian.ly@...bao.com
> 
>     I found if we write large than 4GB value to some sysctl variables,
> the sending syscall will hang up forever, because of these variables
> are 32 bits, such large value bring them overflow to 0 or negative.
> 
>     This patch try to fix overflow or prevent from zero value setup
> of below sysctl variables:
> 
> net.core.wmem_default
> net.core.rmem_default
> 
> net.core.rmem_max
> net.core.wmem_max
> 
> net.ipv4.udp_rmem_min
> net.ipv4.udp_wmem_min
> 
> net.ipv4.tcp_wmem
> net.ipv4.tcp_rmem
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> Signed-off-by: Li Yu <raise.sail@...il.com>

Applied, thanks.
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