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Date: Mon, 18 Nov 2024 18:35:14 -0800
From: Jakub Kicinski <kuba@kernel.org>
To: Breno Leitao <leitao@debian.org>
Cc: Andrew Lunn <andrew+netdev@lunn.ch>, "David S. Miller"
 <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Paolo Abeni
 <pabeni@redhat.com>, Simon Horman <horms@kernel.org>, Jonathan Corbet
 <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>, netdev@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
 linux-kselftest@vger.kernel.org, max@kutsevol.com, thepacketgeek@gmail.com,
 vlad.wing@gmail.com, davej@codemonkey.org.uk
Subject: Re: [PATCH net-next 4/4] netconsole: selftest: Validate CPU number
 auto-population in userdata
Message-ID: <20241118183514.112db8b9@kernel.org>
In-Reply-To: <20241113-netcon_cpu-v1-4-d187bf7c0321@debian.org>
References: <20241113-netcon_cpu-v1-0-d187bf7c0321@debian.org>
	<20241113-netcon_cpu-v1-4-d187bf7c0321@debian.org>
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On Wed, 13 Nov 2024 07:10:55 -0800 Breno Leitao wrote:
> +	if ! grep -q "cpu=[0-9]\+" "${TMPFILENAME}"; then
> +		echo "FAIL: 'cpu=' not found in ${TMPFILENAME}" >&2
> +		cat "${TMPFILENAME}" >&2
> +		exit "${ksft_fail}"
> +	fi

Could we try to do something like pick a 'random' CPU ID from sysfs,
taskset the write / echo, and match that the incoming message has the
expected CPU ID, not just any?