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Date: Tue, 9 Sep 2025 15:33:46 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com,
 andrew+netdev@lunn.ch, horms@kernel.org, shuah@kernel.org,
 linux-kselftest@vger.kernel.org, David Ahern <dsahern@kernel.org>
Subject: Re: [PATCH net-next v2] selftests: net: replace sleeps in
 fcnal-test with waits
Message-ID: <20250909153346.4fa8c369@kernel.org>
In-Reply-To: <20250908200949.270433-1-kuba@kernel.org>
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On Mon,  8 Sep 2025 13:09:49 -0700 Jakub Kicinski wrote:
>  kill_procs()
>  {
>  	killall nettest ping ping6 >/dev/null 2>&1
> -	sleep 1
> +	slowwait 2 sh -c 'test -z "$(pgrep '"'^(nettest|ping|ping6)$'"')"'
>  }

This makes some ping tests fail.

https://netdev-3.bots.linux.dev/vmksft-net/results/289602/129-fcnal-other-sh/stdout
https://netdev-3.bots.linux.dev/vmksft-net/results/289602/128-fcnal-ipv6-sh/stdout

I only tested with debug kernels, but the non-debug get upset.
I'll resend just the wait_local_port_listen changes. If the change
gets more complex it's probably good to separate them out in the first
place.