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authorlibin <huawei.libin@huawei.com>2013-04-08 14:39:12 +0800
committerIngo Molnar <mingo@kernel.org>2013-04-08 13:23:03 +0200
commitfd9b86d37a600488dbd80fe60cca46b822bff1cd (patch)
tree4ce6afb8ec12c2d411546a8c70aeeb73c20e8e53 /kernel/sched/core.c
parenta1cbcaa9ea87b87a96b9fc465951dcf36e459ca2 (diff)
downloadlinaro-lsk-fd9b86d37a600488dbd80fe60cca46b822bff1cd.tar.gz
sched/debug: Fix sd->*_idx limit range avoiding overflow
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>
Diffstat (limited to 'kernel/sched/core.c')
-rw-r--r--kernel/sched/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 306943f531a..fa077929e31 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -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,