From: libin <huawei.libin@huawei.com>
Date: Mon, 8 Apr 2013 06:39:12 +0000 (+0800)
Subject: sched/debug: Fix sd->*_idx limit range avoiding overflow
X-Git-Tag: v3.2.46~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac93bc6a8ab8b760423ca0c4d42311f0d1f5cfcd;p=pandora-kernel.git

sched/debug: Fix sd->*_idx limit range avoiding overflow

commit fd9b86d37a600488dbd80fe60cca46b822bff1cd upstream.

Commit 201c373e8e ("sched/debug: Limit sd->*_idx range on
sysctl") was an incomplete bug fix.

This patch fixes sd->*_idx limit range to [0 ~ CPU_LOAD_IDX_MAX-1]
avoiding array overflow caused by setting sd->*_idx to CPU_LOAD_IDX_MAX
on sysctl.

Signed-off-by: Libin <huawei.libin@huawei.com>
Cc: <jiang.liu@huawei.com>
Cc: <guohanjun@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/51626610.2040607@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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