[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
}

"$@"

dmesg.xz
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