Greeting, FYI, we noticed the following commit (built with gcc-11): commit: 8e274732115f63c1d09136284431b3555bd5cc56 ("printk: extend console_lock for per-console locking") 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-14 ucode: 0xec on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz with 32G 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 2022-04-29 08:33:09 ./run-tests.py ap_ft_pmf_bip_gmac_256 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_ft_pmf_bip_gmac_256 1/1 Test: WPA2-PSK-FT AP with PMF/BIP-GMAC-256 Starting AP wlan3 Starting AP wlan4 Connect to first AP Connect STA wlan0 to AP Roam to the second AP Roam back to the first AP Roaming association rejected Traceback (most recent call last): File "./run-tests.py", line 533, in main t(dev, apdev) File "/lkp/benchmarks/hwsim/tests/hwsim/test_ap_ft.py", line 557, in test_ap_ft_pmf_bip_gmac_256 run_ap_ft_pmf_bip(dev, apdev, "BIP-GMAC-256") File "/lkp/benchmarks/hwsim/tests/hwsim/test_ap_ft.py", line 580, in run_ap_ft_pmf_bip group_mgmt=cipher) File "/lkp/benchmarks/hwsim/tests/hwsim/test_ap_ft.py", line 273, in run_roams dev.roam(ap1['bssid']) File "/lkp/benchmarks/hwsim/tests/hwsim/wpasupplicant.py", line 1235, in roam raise Exception("Roaming association rejected") Exception: Roaming association rejected FAIL ap_ft_pmf_bip_gmac_256 2.034816 2022-04-29 08:33:11.848836 passed 0 test case(s) skipped 0 test case(s) failed tests: ap_ft_pmf_bip_gmac_256 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. -- 0-DAY CI Kernel Test Service https://01.org/lkp