Greeting,

FYI, we noticed the following commit (built with gcc-11):

commit: b6177d3240a4f58fe547891010ad77a45bc1c9ab ("rtnetlink: return EINVAL when request cannot succeed")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: hwsim
version: hwsim-x86_64-717e5d7-1_20220411
with following parameters:

	test: group-02
	ucode: 0x21



on test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz with 16G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):




If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@intel.com>

2022-04-23 23:58:40 ./run-tests.py ap_vlan_wpa2_radius_mixed
DEV: wlan0: 02:00:00:00:00:00
DEV: wlan1: 02:00:00:00:01:00
DEV: wlan2: 02:00:00:00:02:00
APDEV: wlan3
APDEV: wlan4
START ap_vlan_wpa2_radius_mixed 1/1
Test: AP VLAN with WPA2-Enterprise and tagged+untagged VLANs
Starting AP wlan3
Connect STA wlan0 to AP
Command "add" is unknown, try "ip link help".
wlan0.1: ERROR while getting interface flags: No such device
Test connectivity in untagged VLAN 2
Test connectivity in tagged VLAN 1
wlan0.1: ERROR while getting interface flags: No such device
Command "del" is unknown, try "ip link help".
Failed to enable data test functionality
Traceback (most recent call last):
  File "./run-tests.py", line 533, in main
    t(dev, apdev)
  File "/lkp/benchmarks/hwsim/tests/hwsim/test_ap_vlan.py", line 731, in test_ap_vlan_wpa2_radius_mixed
    ifname2="brvlan1")
  File "/lkp/benchmarks/hwsim/tests/hwsim/hwsim_utils.py", line 99, in run_connectivity_test
    config_data_test(dev1, dev2, dev1group, dev2group, ifname1, ifname2)
  File "/lkp/benchmarks/hwsim/tests/hwsim/hwsim_utils.py", line 23, in config_data_test
    raise Exception("Failed to enable data test functionality")
Exception: Failed to enable data test functionality
FAIL ap_vlan_wpa2_radius_mixed 0.546002 2022-04-23 23:58:40.995700
passed 0 test case(s)
skipped 0 test case(s)
failed tests: ap_vlan_wpa2_radius_mixed



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



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