From 4045f1c3d68ef4b589ae2587e6ff66ce8017daf2 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 17 Jun 2026 13:43:23 +0300 Subject: [PATCH] selftests: vlan_bridge_binding: Fix flaky operational state check check_operstate() busy waits for up to one second for the operational state to change to the expected state. This is not enough since carrier loss events can be delayed by the kernel for up to one second (see __linkwatch_run_queue()), leading to sporadic failures. Fix by increasing the busy wait period to two seconds. Fixes: dca12e9ab760 ("selftests: net: Add a VLAN bridge binding selftest") Reported-by: Jakub Kicinski Closes: https://lore.kernel.org/netdev/20260616092733.3a31be4d@kernel.org/ Signed-off-by: Ido Schimmel Reviewed-by: Nikolay Aleksandrov Reviewed-by: Petr Machata Link: https://patch.msgid.link/20260617104323.1069457-1-idosch@nvidia.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/vlan_bridge_binding.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/vlan_bridge_binding.sh b/tools/testing/selftests/net/vlan_bridge_binding.sh index e8c02c64e03a..d04caa14202d 100755 --- a/tools/testing/selftests/net/vlan_bridge_binding.sh +++ b/tools/testing/selftests/net/vlan_bridge_binding.sh @@ -64,7 +64,7 @@ check_operstate() local expect=$1; shift local operstate - operstate=$(busywait 1000 \ + operstate=$(busywait 2000 \ operstate_is "$dev" "$expect") check_err $? "Got operstate of $operstate, expected $expect" }