linux-kernel - [PATCH v2] sched/core: Fix size of rq::uclamp initialization

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Message-Id: <1579230412-10476-1-git-send-email-guangleix.li@gmail.com>
Date:   Fri, 17 Jan 2020 11:06:52 +0800
From:   Li Guanglei <guangleix.li@...il.com>
To:     peterz@...radead.org, qais.yousef@....com
Cc:     dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        mgorman@...e.de, linux-kernel@...r.kernel.org,
        guangleix.li@...il.com, guanglei.li@...soc.com
Subject: [PATCH v2] sched/core: Fix size of rq::uclamp initialization

From: Li Guanglei <guanglei.li@...soc.com>

rq::uclamp_rq is an array of struct uclamp_rq, make sure we clear the
whole thing.

Fixes: 69842cba9ace ("sched/uclamp: Add CPU's clamp buckets refcountinga")
Signed-off-by: Li Guanglei <guanglei.li@...soc.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Qais Yousef <qais.yousef@....com>
Link:https://lkml.kernel.org/r/1577259844-12677-1-git-send-email-guangleix.li@gmail.com
---
 kernel/sched/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 44123b4..05f870b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1252,7 +1252,8 @@ static void __init init_uclamp(void)
 	mutex_init(&uclamp_mutex);
 
 	for_each_possible_cpu(cpu) {
-		memset(&cpu_rq(cpu)->uclamp, 0, sizeof(struct uclamp_rq));
+		memset(&cpu_rq(cpu)->uclamp, 0,
+				sizeof(struct uclamp_rq)*UCLAMP_CNT);
 		cpu_rq(cpu)->uclamp_flags = 0;
 	}
 
-- 
2.7.4