sched_domain_topology space was allocated by the size
ARRAY_SIZE(default_topology) + sched_domains_numa_levels,
suppose CONFIG_SCHED_SMT, CONFIG_SCHED_MC were y,
"static struct sched_domain_topology_level default_topology[] = {
{ sd_init_SIBLING, cpu_smt_mask, },
{ sd_init_MC, cpu_coregroup_mask, },
{ sd_init_CPU, cpu_cpu_mask, },
{ NULL, },
};"
then, ARRAY_SIZE(default_topology) equals to 4,
default_topology's NULL entry was accounted,
but, the following allocation for other sched_domains_numa_levels
entries was startd at 3(for default_topology[3].init is NULL),
so, 1 entry was forgot.
Signed-off-by: liguang <lig.f...@cn.fujitsu.com>
---
kernel/sched/core.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 257002c..83f947e 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6241,7 +6241,7 @@ static void sched_init_numa(void)
}
}
- tl = kzalloc((ARRAY_SIZE(default_topology) + level) *
+ tl = kzalloc((ARRAY_SIZE(default_topology) + level - 1 ) *
sizeof(struct sched_domain_topology_level), GFP_KERNEL);
if (!tl)
return;
--
1.7.2.5
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