[Bug 1759836] Re: systemd-udevd consumes 100% of CPU

Lumar lmspamkill at yahoo.it
Sat May 19 02:30:00 UTC 2018 

The bug is present on my system.
It was temporarily solved with workaround from https://dev.solus-project.com/T5224, but I don't use Bluetooth and so don't know if it is now working.

* Infos from uname
Linux 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:15:38 UTC 2018 i686 i686 i686 GNU/Linux
Ubuntu 4.15.0-20.21-generic 4.15.17

* From dmidecode
System Information
	Manufacturer: Dell Inc.
	Product Name: Vostro 3700
	Version: A10

Base Board Information
	Manufacturer: Dell Inc.
	Product Name: 07VWR8
	Version: A10
	Features:
		Board is a hosting board
		Board is replaceable
	Type: Motherboard

OEM Strings
	String 1: Dell System
	String 2: 5[0003]
	String 3: 13[PP41L]

BIOS Information
	Vendor: Dell Inc.
	Version: A10
	Release Date: 10/25/2010
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 2048 kB
	Characteristics:
		MCA is supported
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		ESCD support is available
		Boot from CD is supported
		Selectable boot is supported
		BIOS ROM is socketed
		EDD is supported
		5.25"/1.2 MB floppy services are supported (int 13h)
		3.5"/720 kB floppy services are supported (int 13h)
		3.5"/2.88 MB floppy services are supported (int 13h)
		Print screen service is supported (int 5h)
		8042 keyboard services are supported (int 9h)
		Serial services are supported (int 14h)
		Printer services are supported (int 17h)
		CGA/mono video services are supported (int 10h)
		ACPI is supported
		USB legacy is supported
		ATAPI Zip drive boot is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
	BIOS Revision: 1.254
	Firmware Revision: 1.254

* From /sys/kernel/debug/usb/devices
T:  Bus=01 Lev=03 Prnt=03 Port=02 Cnt=03 Dev#=  7 Spd=12   MxCh= 0
D:  Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=413c ProdID=8160 Rev= 1.73
S:  Manufacturer=Dell Computer Corp
S:  Product=Dell Wireless 365 Bluetooth Module
C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  32 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  32 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  64 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  64 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  64 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  64 Ivl=1ms
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E:  Ad=84(I) Atr=02(Bulk) MxPS=  32 Ivl=0ms
E:  Ad=04(O) Atr=02(Bulk) MxPS=  32 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=00 Driver=(none)

* From udevadm
UDEV  [947.284638] unbind   /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0 (usb)
KERNEL[947.289860] bind     /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0 (usb)
KERNEL[947.290052] unbind   /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0 (usb)

* From journalctl
mag 18 17:07:42 upowerd[10489]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0
mag 18 17:07:42 systemd-udevd[323]: Process 'hid2hci --method=dell  --devpath=/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0' failed with exit code 1.
mag 18 17:07:42 upowerd[10489]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0

* From systemd-udevd
'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0'(err) 'error: switching device '/sys//devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0' failed.'

* From /proc/modules
btusb 40960 0 - Live 0xf8ae7000
btrtl 16384 1 btusb, Live 0xf8957000
btbcm 16384 1 btusb, Live 0xf88ea000
btintel 16384 1 btusb, Live 0xf88c4000
bluetooth 466944 31 rfcomm,bnep,btusb,btrtl,btbcm,btintel, Live 0xf8f77000
ecdh_generic 28672 1 bluetooth, Live 0xf88ef000

* From /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/product
BCM2046B1

* From /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/uevent
MAJOR=189
MINOR=2
DEVNAME=bus/usb/001/003
DEVTYPE=usb_device
DRIVER=usb
PRODUCT=a5c/4500/100
TYPE=9/0/0
BUSNUM=001
DEVNUM=003

* From /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/version
 2.00

* From /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/uevent
MAJOR=189
MINOR=5
DEVNAME=bus/usb/001/006
DEVTYPE=usb_device
DRIVER=usb
PRODUCT=413c/8162/100
TYPE=0/0/0
BUSNUM=001
DEVNUM=006

* From /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0/uevent
DEVTYPE=usb_interface
PRODUCT=413c/8162/100
TYPE=0/0/0
INTERFACE=3/1/2
MODALIAS=usb:v413Cp8162d0100dc00dsc00dp00ic03isc01ip02in00

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https://bugs.launchpad.net/bugs/1759836

Title:
  systemd-udevd consumes 100% of CPU

Status in Bluez Utilities:
  Unknown
Status in linux:
  Unknown
Status in bluez package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  The systemd-udevd proccess consumes 100% of a thread everytime, but
  i'm not noticing any difference in my computer.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: systemd 237-3ubuntu6
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu2
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Mar 29 08:52:54 2018
  InstallationDate: Installed on 2018-03-05 (23 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180304)
  MachineType: Dell Inc. Inspiron N5010
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic root=UUID=3c29e292-f1ae-45e1-a0ed-a82524278ce1 ro quiet splash vt.handoff=1
  SourcePackage: systemd
  SystemdDelta:
   [EXTENDED]   /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
   [EXTENDED]   /lib/systemd/system/user at .service → /lib/systemd/system/user at .service.d/timeout.conf

   2 overridden configuration files found.
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/25/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A12
  dmi.board.name: 08R0GW
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A12
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A12
  dmi.modalias: dmi:bvnDellInc.:bvrA12:bd01/25/2011:svnDellInc.:pnInspironN5010:pvrA12:rvnDellInc.:rn08R0GW:rvrA12:cvnDellInc.:ct8:cvrA12:
  dmi.product.name: Inspiron N5010
  dmi.product.version: A12
  dmi.sys.vendor: Dell Inc.

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