linux-kernel - [PATCH] maple_tree: Use correct variable type in sizeof

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Message-Id: <20230410091431.74961-1-zhangpeng.00@bytedance.com>
Date:   Mon, 10 Apr 2023 17:14:31 +0800
From:   Peng Zhang <zhangpeng.00@...edance.com>
To:     Liam.Howlett@...cle.com
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org,
        Peng Zhang <zhangpeng.00@...edance.com>,
        David Binderman <dcb314@...mail.com>
Subject: [PATCH] maple_tree: Use correct variable type in sizeof

The original code is:
	memset(pivs + tmp, 0, sizeof(unsigned long *) * (max_p - tmp));

The type of variable pointed to by pivs is unsigned long, but the type
used in sizeof is a pointer type. Change it to unsigned long.

Suggested-by: David Binderman <dcb314@...mail.com>
Signed-off-by: Peng Zhang <zhangpeng.00@...edance.com>
---
 lib/maple_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 88c44f6d6cee..b06fc5f19b31 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -3255,7 +3255,7 @@ static inline void mas_destroy_rebalance(struct ma_state *mas, unsigned char end
 
 		if (tmp < max_p)
 			memset(pivs + tmp, 0,
-			       sizeof(unsigned long *) * (max_p - tmp));
+			       sizeof(unsigned long) * (max_p - tmp));
 
 		if (tmp < mt_slots[mt])
 			memset(slots + tmp, 0, sizeof(void *) * (max_s - tmp));
-- 
2.20.1