From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next v3 1/3] ipv4: support sport, dport and
 ip_proto in RTM_GETROUTE
Date: Wed, 16 May 2018 14:37:14 -0400 (EDT)
Message-ID: <20180516.143714.1321600980314123555.davem@davemloft.net>
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From: Roopa Prabhu <roopa@cumulusnetworks.com>
Date: Tue, 15 May 2018 20:55:06 -0700

> +static int inet_rtm_getroute_reply(struct sk_buff *in_skb, struct nlmsghdr *nlh,
> +				   __be32 dst, __be32 src, struct flowi4 *fl4,
> +				   struct rtable *rt, struct fib_result *res)
> +{
> +	struct net *net = sock_net(in_skb->sk);
> +	struct rtmsg *rtm = nlmsg_data(nlh);
> +	u32 table_id = RT_TABLE_MAIN;
> +	struct sk_buff *skb;
> +	int err = 0;
> +
> +	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
> +	if (!skb)
> +		return -ENOMEM;

If the caller can use GFP_KERNEL, so can this allocation.