Re: [PATCH] maple_tree: Use correct variable type in sizeof

[Gang Li <ligang.bdlg@bytedance.com>]

On 2023/4/10 17:14, Peng Zhang wrote:
> 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.
> 

Maybe add a fix tag?

Fixes: 54a611b60590 ("Maple Tree: add new data structure")

> Suggested-by: David Binderman <dcb314@hotmail.com>
> Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.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));