netdev - [PATCH net-next] selftests: netconsole: remove log noise due to socat exit

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Message-Id: <20251129-netcons-socat-noise-v1-1-605a0cea8fca@gmail.com>
Date: Sat, 29 Nov 2025 12:24:19 +0000
From: Andre Carvalho <asantostc@...il.com>
To: Breno Leitao <leitao@...ian.org>, Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Andre Carvalho <asantostc@...il.com>
Subject: [PATCH net-next] selftests: netconsole: remove log noise due to
 socat exit

This removes some noise that can be distracting while looking at
selftests by redirecting socat stderr to /dev/null.

Before this commit, netcons_basic would output:

Running with target mode: basic (ipv6)
2025/11/29 12:08:03 socat[259] W exiting on signal 15
2025/11/29 12:08:03 socat[271] W exiting on signal 15
basic : ipv6 : Test passed
Running with target mode: basic (ipv4)
2025/11/29 12:08:05 socat[329] W exiting on signal 15
2025/11/29 12:08:05 socat[322] W exiting on signal 15
basic : ipv4 : Test passed
Running with target mode: extended (ipv6)
2025/11/29 12:08:08 socat[386] W exiting on signal 15
2025/11/29 12:08:08 socat[386] W exiting on signal 15
2025/11/29 12:08:08 socat[380] W exiting on signal 15
extended : ipv6 : Test passed
Running with target mode: extended (ipv4)
2025/11/29 12:08:10 socat[440] W exiting on signal 15
2025/11/29 12:08:10 socat[435] W exiting on signal 15
2025/11/29 12:08:10 socat[435] W exiting on signal 15
extended : ipv4 : Test passed

After these changes, output looks like:

Running with target mode: basic (ipv6)
basic : ipv6 : Test passed
Running with target mode: basic (ipv4)
basic : ipv4 : Test passed
Running with target mode: extended (ipv6)
extended : ipv6 : Test passed
Running with target mode: extended (ipv4)
extended : ipv4 : Test passed

Signed-off-by: Andre Carvalho <asantostc@...il.com>
---
 tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
index 87f89fd92f8c..ae8abff4be40 100644
--- a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
+++ b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
@@ -249,7 +249,7 @@ function listen_port_and_save_to() {
 
 	# Just wait for 2 seconds
 	timeout 2 ip netns exec "${NAMESPACE}" \
-		socat "${SOCAT_MODE}":"${PORT}",fork "${OUTPUT}"
+		socat "${SOCAT_MODE}":"${PORT}",fork "${OUTPUT}" 2> /dev/null
 }
 
 # Only validate that the message arrived properly

---
base-commit: ff736a286116d462a4067ba258fa351bc0b4ed80
change-id: 20251129-netcons-socat-noise-00e7ccf29560

Best regards,
-- 
Andre Carvalho <asantostc@...il.com>