Commit fd9b86d3 authored Apr 08, 2013 by libin Committed by Ingo Molnar Apr 08, 2013

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



Commit 201c373e ("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>

parent a1cbcaa9

kernel/sched/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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,

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