From: Eric Dumazet <dada1@cosmosbay.com>
Date: Tue, 13 Dec 2005 06:17:14 +0000 (-0800)
Subject: [PATCH] x86_64: Bug correction in populate_memnodemap()
X-Git-Tag: v2.6.15-rc6~86
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8309cf66fd90ccba9894adde2f3a8d7e1507e4d2;p=pandora-kernel.git

[PATCH] x86_64: Bug correction in populate_memnodemap()

As reported by Keith Mannthey, there are problems in populate_memnodemap()

The bug was that the compute_hash_shift() was returning 31, with incorrect
initialization of memnodemap[]

To correct the bug, we must use (1UL << shift) instead of (1 << shift) to
avoid an integer overflow, and we must check that shift < 64 to avoid an
infinite loop.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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