linux-kernel - Re: [PATCH] netconsole: Append kernel version to message

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Message-ID: <20230703124427.228f7a9e@kernel.org>
Date:   Mon, 3 Jul 2023 12:44:27 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     leitao@...ian.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, sergey.senozhatsky@...il.com,
        pmladek@...e.com, tj@...nel.or,
        Dave Jones <davej@...emonkey.org.uk>,
        netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: Re: [PATCH] netconsole: Append kernel version to message

On Mon,  3 Jul 2023 08:41:54 -0700 leitao@...ian.org wrote:
> +	uname = init_utsname()->release;
> +
> +	newmsg = kasprintf(GFP_KERNEL, "%s;%s", uname, msg);
> +	if (!newmsg)
> +		/* In case of ENOMEM, just ignore this entry */
> +		return;
> +	newlen = strlen(uname) + len + 1;
> +
> +	send_ext_msg_udp(nt, newmsg, newlen);
> +
> +	kfree(newmsg);

You can avoid the memory allocation by putting this code into
send_ext_msg_udp(), I reckon? There's already a buffer there.
-- 
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