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

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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>
This commit is contained in:
libin 2013-04-08 14:39:12 +08:00 committed by Ingo Molnar
parent a1cbcaa9ea
commit fd9b86d37a
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/core.c
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@ -4933,7 +4933,7 @@ static void sd_free_ctl_entry(struct ctl_table **tablep)
}
static int min_load_idx = 0;
static int max_load_idx = CPU_LOAD_IDX_MAX;
static int max_load_idx = CPU_LOAD_IDX_MAX-1;
static void
set_table_entry(struct ctl_table *entry,