Kernel hard lock upon removing mounted SD card

[Kip Warner]

I removed an SD card and my machine hard locked.
---
ApportVersion: 2.17.2-0ubuntu1.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: kip 3703 F.... pulseaudio
 /dev/snd/controlC1: kip 3703 F.... pulseaudio
 /dev/snd/controlC0: kip 3703 F.... pulseaudio
CurrentDesktop: XFCE
DistroRelease: Ubuntu 15.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=e11fa32e-264e-43a3-addb-712319157e80
InstallationDate: Installed on 2015-04-24 (102 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
MachineType: ASUS All Series
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-26-generic root=UUID=c2a5401d-c2eb-48b6-a21b-5f60d92569ab ro quiet splash nomdmonddf nomdmonisw crashkernel=384M-2G:64M,2G-:512M vt.handoff=7
ProcVersionSignature: Ubuntu 3.19.0-26.27-generic 3.19.8-ckt4
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-26-generic N/A
 linux-backports-modules-3.19.0-26-generic N/A
 linux-firmware 1.143.2
Tags: vivid
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
Uname: Linux 3.19.0-26-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm audio cdrom dip fuse lpadmin netdev plugdev sambashare sudo vboxusers
_MarkForUpload: True
dmi.bios.date: 07/11/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1304
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z97-PRO(Wi-Fi ac)
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
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:bvnAmericanMegatrendsInc.:bvr1304:bd07/11/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ97-PRO(Wi-Fiac):rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS

[Kip Warner (kip)]

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[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.2 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc5-unstable/

[Kip Warner (kip)]

Hey Joseph. It's been happening for a while now with at least half a dozen or so kernel upgrades. I waited until now to submit the bug report because it was tricky getting the debug logs.

I'm going to guess and say it's probably something to do with the way card was unmounted, but I can't be sure.

Would you like me to try with the latest upstream kernel anyways?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]