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Subject[PATCH] sched/uclamp: potential dereference of null pointer
Date
The return value of kzalloc() needs to be checked.
To avoid use of null pointer in case of the failure of alloc.

Fixes: 391e43da797a ("sched: Move all scheduler bits into kernel/sched/")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
kernel/sched/core.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index e5858999b54d..988a4a372e14 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -8125,6 +8125,8 @@ void __init sched_init(void)
#endif
if (ptr) {
ptr = (unsigned long)kzalloc(ptr, GFP_NOWAIT);
+ if (!ptr)
+ return;

#ifdef CONFIG_FAIR_GROUP_SCHED
root_task_group.se = (struct sched_entity **)ptr;
--
2.25.1
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