linux-kernel - [nl80211] 5c5e52d1bb: hwsim.he80_pwr

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Date:   Mon, 2 Mar 2020 09:24:05 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     John Crispin <john@...ozen.org>
Cc:     Johannes Berg <johannes.berg@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...ts.01.org
Subject: [nl80211] 5c5e52d1bb: hwsim.he80_pwr_constraint.fail

FYI, we noticed the following commit (built with gcc-7):

commit: 5c5e52d1bb962510fecdc1ebecdde89694d1b223 ("nl80211: add handling for BSS color")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: hwsim
with following parameters:

	group: hwsim-21



on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

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 <rong.a.chen@...el.com>


2020-02-23 01:18:05 	./run-tests.py he80_pwr_constraint 
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 he80_pwr_constraint 1/1
Test: HE with 80 MHz channel width and local power constraint
Starting AP wlan3
Connect STA wlan0 to AP
Failed to trigger scan: FAIL-BUSY

Traceback (most recent call last):
  File "./run-tests.py", line 521, in main
    t(dev, apdev)
  File "/lkp/benchmarks/hwsim/tests/hwsim/test_he.py", line 925, in test_he80_pwr_constraint
    dev[0].flush_scan_cache()
  File "/lkp/benchmarks/hwsim/tests/hwsim/wpasupplicant.py", line 1168, in flush_scan_cache
    self.scan(freq=2422, only_new=True)
  File "/lkp/benchmarks/hwsim/tests/hwsim/wpasupplicant.py", line 1140, in scan
    raise Exception("Failed to trigger scan: " + str(res))
Exception: Failed to trigger scan: FAIL-BUSY

FAIL he80_pwr_constraint 6.598609 2020-02-23 01:18:16.208671
passed 0 test case(s)
skipped 0 test case(s)
failed tests: he80_pwr_constraint


To reproduce:

        # build kernel
	cd linux
	cp config-5.5.0-rc4-00721-g5c5e52d1bb962 .config
	make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
Rong Chen


View attachment "config-5.5.0-rc4-00721-g5c5e52d1bb962" of type "text/plain" (202572 bytes)

View attachment "job-script" of type "text/plain" (4884 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (226996 bytes)

View attachment "hwsim" of type "text/plain" (59117 bytes)