There is a new twist to this: The effect can be remedied by using a
shorter USB extension cable. So it is obvious that the crashes result
from bad communication or bad reaction of the device due to insufficent
power.
Question is: Is a misbehaveing USB device like something like bad
hardware, that may trigger crashes, or do we see USB devices as
unreliable devices we need to handle.
The crash happend once while unplugging the WLAN stick while data was
transfered. This is a clue that the same state may be provoked by
unplugging of the device in an inconvenient moment, which is of course
totally legal and should NOT crash the system.
Should we go on here or should I file a new bug with a new description
of the crashs's cause?
** Changed in: linux (Ubuntu)
Status: Expired => Incomplete
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https://bugs.launchpad.net/bugs/1419341
Title:
Kernel crashes in rt2x00queue_get_entry+0x24
Status in linux package in Ubuntu:
Incomplete
Bug description:
When using an Logilink USB WiFi stick reported as Ralink Technology,
Corp. RT5372 Wireless Adapter, I ancounter frequent disconnects
despite good wifi signal, and repeated kernel crashes at
rt2x00queue_get_entry+0x24.
The crash may happen from time to time, but can be provoked by heavy
wifi traffic.
Maybe it is a problem with the drivers state management, because dmesg
shows resets or replugs of the device if temporary disconnect happens.
So I think the device may reset due to other problems (eg. flaky usb
power), and the driver doesn't handle it well in all states. Maybe the
above function is called with the device already disconnecting.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.46
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: nf 1858 F.... pulseaudio
/dev/snd/controlC0: nf 1858 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Feb 7 21:42:32 2015
InstallationDate: Installed on 2014-12-03 (66 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 10BE0002MD
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed
root=UUID=206fe64f-468c-48d5-913a-d0880e24a53d ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-24-generic N/A
linux-backports-modules-3.13.0-24-generic N/A
linux-firmware 1.127
RfKill:
4: phy4: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/23/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: FBKT54AUS
dmi.board.name: SHARKBAY
dmi.board.vendor: LENOVO
dmi.board.version: 0B98401 PRO
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnLENOVO:bvrFBKT54AUS:bd10/23/2013:svnLENOVO:pn10BE0002MD:pvrThinkCentreM83:rvnLENOVO:rnSHARKBAY:rvr0B98401PRO:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: 10BE0002MD
dmi.product.version: ThinkCentre M83
dmi.sys.vendor: LENOVO
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