Commit fd9b86d3 authored by libin's avatar libin Committed by Ingo Molnar

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: default avatarLibin <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.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent a1cbcaa9
...@@ -4933,7 +4933,7 @@ static void sd_free_ctl_entry(struct ctl_table **tablep) ...@@ -4933,7 +4933,7 @@ static void sd_free_ctl_entry(struct ctl_table **tablep)
} }
static int min_load_idx = 0; 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 static void
set_table_entry(struct ctl_table *entry, set_table_entry(struct ctl_table *entry,
......
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