Comment 0 for bug 1767738

I have a powered external usb harddrive
https://www.bestbuy.ca/en-ca/product/western-digital-wd-my-book-4tb-2-5-usb-3-0-external-hard-drive-wdbbgb0040hbk-nesn-wdbbgb0040hbk-nesn/10482142.aspx

which i'm trying to mount.

connecting it shows in dmesg that it's picking up on a usb device.

after some time, it reports that a bunch of kernel tasks hung with some callstacks

I first encountered this bug on a raspberry pi by running an upgrade (i can't remember the original version but it use to work)

I then figured that i should check if the problem is also on my ubuntu machine running 16.04.
it did

i then upgraded to 17.10 and the problem was still there.

i then tested on 18.04 and the problem is still there.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-20-generic 4.15.0-20.21
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 28 20:27:26 2018
InstallationDate: Installed on 2015-08-06 (996 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-signed
UpgradeStatus: Upgraded to bionic on 2018-04-28 (0 days ago)