From 0d59a01bc461bbab4017ff449b8401151ef44cf6 Mon Sep 17 00:00:00 2001
From: Adam Litke <agl@us.ibm.com>
Date: Tue, 30 Jan 2007 14:35:39 -0800
Subject: [PATCH] [PATCH] Don't allow the stack to grow into hugetlb reserved
 regions

When expanding the stack, we don't currently check if the VMA will cross
into an area of the address space that is reserved for hugetlb pages.
Subsequent faults on the expanded portion of such a VMA will confuse the
low-level MMU code, resulting in an OOPS.  Check for this.

Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
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