linux-kernel - Re: Programs die when max_map

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Date:	Thu, 26 Nov 2009 19:48:46 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	xiyou.wangcong@...il.com
Cc:	jengelh@...ozas.de, linux-kernel@...r.kernel.org
Subject: Re: Programs die when max_map_count is too large

> IMO, the problem is 'sysctl_max_map_count' is actually signed int,
> while when writing to it, the value is treated as unsigned.

The problem is the loop in simple_strtoul(), some people were so afraid
to touch so they even came up with strict_* variants.

> A better fix which I could imagine is to fix sysctl to understand
> signed int's.

	-	int map_count;
	+	unsigned int map_count;

This is incomplete at least.
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