[lkp-robot] [platform/x86] bff589be59: kmsg.dell_wmi:Cannot_read_Dell_descriptor_buffer

[kernel test robot]

FYI, we noticed the following commit:

commit: bff589be59c50924a9715951160578e570cba5c6 ("platform/x86: dell-wmi: Convert to the WMI bus infrastructure")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -m 420M

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


[    7.102869] usbhid: USB HID core driver
[    7.104086] dell_wmi: Cannot read Dell descriptor buffer - 1
[    7.104088] acer_wmi: Acer Laptop ACPI-WMI Extras
[    7.104097] acer_wmi: No or unsupported WMI interface, unable to load



To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong
#!/bin/sh

export_top_env()
{
	export suite='boot'
	export testcase='boot'
	export timeout='10m'
	export job_origin='/lkp/lkp/src/jobs/boot.yaml'
	export queue='bisect'
	export testbox='vm-lkp-nhm-dp1-openwrt-ia32-4'
	export tbox_group='vm-lkp-nhm-dp1-openwrt-ia32'
	export branch='linus/master'
	export commit='bff589be59c50924a9715951160578e570cba5c6'
	export kconfig='x86_64-nfsroot'
	export submit_id='596aafb30b9a931af7e8ffa1'
	export job_file='/lkp/scheduled/vm-lkp-nhm-dp1-openwrt-ia32-4/boot-1-openwrt-i386-2016-03-16.cgz-bff589be59c50924a9715951160578e570cba5c6-20170716-72439-120txhp-0.yaml'
	export id='fac0bb4dbf48ec7df35e4ad4d85535a177303e1b'
	export model='qemu-system-x86_64 -enable-kvm'
	export nr_vm=10
	export nr_cpu=1
	export memory='420M'
	export rootfs='openwrt-i386-2016-03-16.cgz'
	export need_kconfig='CONFIG_KVM_GUEST=y'
	export compiler='gcc-6'
	export enqueue_time='2017-07-16 08:13:39 +0800'
	export _id='596aafb30b9a931af7e8ffa1'
	export _rt='/result/boot/1/vm-lkp-nhm-dp1-openwrt-ia32/openwrt-i386-2016-03-16.cgz/x86_64-nfsroot/gcc-6/bff589be59c50924a9715951160578e570cba5c6'
	export user='lkp'
	export result_root='/result/boot/1/vm-lkp-nhm-dp1-openwrt-ia32/openwrt-i386-2016-03-16.cgz/x86_64-nfsroot/gcc-6/bff589be59c50924a9715951160578e570cba5c6/0'
	export LKP_SERVER='inn'
	export max_uptime=600
	export initrd='/osimage/openwrt/openwrt-i386-2016-03-16.cgz'
	export bootloader_append='root=/dev/ram0
user=lkp
job=/lkp/scheduled/vm-lkp-nhm-dp1-openwrt-ia32-4/boot-1-openwrt-i386-2016-03-16.cgz-bff589be59c50924a9715951160578e570cba5c6-20170716-72439-120txhp-0.yaml
ARCH=x86_64
kconfig=x86_64-nfsroot
branch=linus/master
commit=bff589be59c50924a9715951160578e570cba5c6
BOOT_IMAGE=/pkg/linux/x86_64-nfsroot/gcc-6/bff589be59c50924a9715951160578e570cba5c6/vmlinuz-4.12.0-rc1-00039-gbff589b
max_uptime=600
RESULT_ROOT=/result/boot/1/vm-lkp-nhm-dp1-openwrt-ia32/openwrt-i386-2016-03-16.cgz/x86_64-nfsroot/gcc-6/bff589be59c50924a9715951160578e570cba5c6/0
LKP_SERVER=inn
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
earlyprintk=ttyS0,115200
console=ttyS0,115200
console=tty0
vga=normal
rw'
	export lkp_initrd='/lkp/lkp/lkp-i386.cgz'
	export modules_initrd='/pkg/linux/x86_64-nfsroot/gcc-6/bff589be59c50924a9715951160578e570cba5c6/modules.cgz'
	export site='inn'
	export LKP_CGI_PORT=80
	export LKP_CIFS_PORT=139
	export kernel='/pkg/linux/x86_64-nfsroot/gcc-6/bff589be59c50924a9715951160578e570cba5c6/vmlinuz-4.12.0-rc1-00039-gbff589b'
	export dequeue_time='2017-07-16 08:18:40 +0800'
	export job_initrd='/lkp/scheduled/vm-lkp-nhm-dp1-openwrt-ia32-4/boot-1-openwrt-i386-2016-03-16.cgz-bff589be59c50924a9715951160578e570cba5c6-20170716-72439-120txhp-0.cgz'

	[ -n "$LKP_SRC" ] ||
	export LKP_SRC=/lkp/${user:-lkp}/src
}

run_job()
{
	echo $$ > $TMP/run-job.pid

	. $LKP_SRC/lib/http.sh
	. $LKP_SRC/lib/job.sh
	. $LKP_SRC/lib/env.sh

	export_top_env

	run_monitor $LKP_SRC/monitors/one-shot/wrapper boot-slabinfo
	run_monitor $LKP_SRC/monitors/one-shot/wrapper boot-meminfo
	run_monitor $LKP_SRC/monitors/one-shot/wrapper memmap
	run_monitor $LKP_SRC/monitors/wrapper kmsg
	run_monitor $LKP_SRC/monitors/wrapper oom-killer
	run_monitor $LKP_SRC/monitors/plain/watchdog
	run_monitor $LKP_SRC/monitors/wrapper nfs-hang

	run_test $LKP_SRC/tests/wrapper sleep 1
}

extract_stats()
{
	$LKP_SRC/stats/wrapper boot-slabinfo
	$LKP_SRC/stats/wrapper boot-meminfo
	$LKP_SRC/stats/wrapper memmap
	$LKP_SRC/stats/wrapper boot-memory
	$LKP_SRC/stats/wrapper boot-time
	$LKP_SRC/stats/wrapper kernel-size
	$LKP_SRC/stats/wrapper kmsg

	$LKP_SRC/stats/wrapper time sleep.time
	$LKP_SRC/stats/wrapper time
	$LKP_SRC/stats/wrapper dmesg
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper stderr
	$LKP_SRC/stats/wrapper last_state
}

"$@"

Attachment: dmesg.xz
Description: Binary data