linux-kernel - [PATCH net-next] selftests: netconsole: ensure required log level is set on netcons

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Message-Id: <20251121-netcons-basic-loglevel-v1-1-577f8586159c@gmail.com>
Date: Fri, 21 Nov 2025 15:00:22 +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: ensure required log level
 is set on netcons_basic

This commit ensures that the required log level is set at the start of
the test iteration.

Part of the cleanup performed at the end of each test iteration resets
the log level (do_cleanup in lib_netcons.sh) to the values defined at the
time test script started. This may cause further test iterations to fail
if the default values are not sufficient.

Signed-off-by: Andre Carvalho <asantostc@...il.com>
---
 tools/testing/selftests/drivers/net/netcons_basic.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/netcons_basic.sh b/tools/testing/selftests/drivers/net/netcons_basic.sh
index a3446b569976..2022f3061738 100755
--- a/tools/testing/selftests/drivers/net/netcons_basic.sh
+++ b/tools/testing/selftests/drivers/net/netcons_basic.sh
@@ -28,8 +28,6 @@ OUTPUT_FILE="/tmp/${TARGET}"

 # Check for basic system dependency and exit if not found
 check_for_dependencies
-# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5)
-echo "6 5" > /proc/sys/kernel/printk
 # Remove the namespace, interfaces and netconsole target on exit
 trap cleanup EXIT

@@ -39,6 +37,9 @@ do
 	for IP_VERSION in "ipv6" "ipv4"
 	do
 		echo "Running with target mode: ${FORMAT} (${IP_VERSION})"
+		# Set current loglevel to KERN_INFO(6), and default to
+		# KERN_NOTICE(5)
+		echo "6 5" > /proc/sys/kernel/printk
 		# Create one namespace and two interfaces
 		set_network "${IP_VERSION}"
 		# Create a dynamic target for netconsole

---
base-commit: e2c20036a8879476c88002730d8a27f4e3c32d4b
change-id: 20251121-netcons-basic-loglevel-69e2715c1029

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