netdev - Re: [PATCH net-next] ntp: fix size argument for kcalloc

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Date: Thu, 4 Jul 2024 07:36:24 +0200
From: Louis Peens <louis.peens@...igine.com>
To: Chen Ni <nichen@...as.ac.cn>
Cc: kuba@...nel.org, davem@...emloft.net, edumazet@...gle.com,
	pabeni@...hat.com, horms@...nel.org, yinjun.zhang@...igine.com,
	johannes.berg@...el.com, ryno.swart@...igine.com,
	ziyang.chen@...igine.com, linma@....edu.cn,
	niklas.soderlund@...igine.com, oss-drivers@...igine.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] ntp: fix size argument for kcalloc

Wed, Jul 03, 2024 at 10:56:25AM +0800, Chen Ni wrote:
> The size argument to kcalloc should be the size of desired structure,
> not the pointer to it.
> 
> Fixes: 6402528b7a0b ("nfp: xsk: add AF_XDP zero-copy Rx and Tx support")
> Signed-off-by: Chen Ni <nichen@...as.ac.cn>
> ---
>  drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> index 182ba0a8b095..768f22cd3d02 100644
> --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> @@ -2539,7 +2539,7 @@ nfp_net_alloc(struct pci_dev *pdev, const struct nfp_dev_info *dev_info,
>  				  nn->dp.num_r_vecs, num_online_cpus());
>  	nn->max_r_vecs = nn->dp.num_r_vecs;
>  
> -	nn->dp.xsk_pools = kcalloc(nn->max_r_vecs, sizeof(nn->dp.xsk_pools),
> +	nn->dp.xsk_pools = kcalloc(nn->max_r_vecs, sizeof(*nn->dp.xsk_pools),
>  				   GFP_KERNEL);
>  	if (!nn->dp.xsk_pools) {
>  		err = -ENOMEM;
> -- 
Looks good to me, thanks.

Signed-off-by: Louis Peens <louis.peens@...igine.com>