[Intel D525MWV] rcu_sched self-detected stall on CPU

[Alexey Vazhnov]

Motherboard D525MWV with Intel Atom D525 worked fine in Ubuntu server 12.04, but when I installed Ubuntu server 14.04, random processes crashed several times a day with this message.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.47
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-24-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: i386
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Sun May 25 12:40:15 2014
HibernationDevice: RESUME=UUID=c746311d-afe7-409e-89db-96f7df430979
InstallationDate: Installed on 2014-05-17 (7 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/zsh
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=11d4cb14-db70-4f96-b841-742d20fa24c0 ro nmi_watchdog=0
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-24-generic N/A
 linux-backports-modules-3.13.0-24-generic N/A
 linux-firmware 1.127.2
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/26/2013
dmi.bios.vendor: Intel Corp.
dmi.bios.version: MWPNT10N.86A.0132.2013.0726.1534
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: D525MWV
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE93081-400
dmi.chassis.type: 2
dmi.modalias: dmi:bvnIntelCorp.:bvrMWPNT10N.86A.0132.2013.0726.1534:bd07/26/2013:svn:pn:pvr:rvnIntelCorporation:rnD525MWV:rvrAAE93081-400:cvn:ct2:cvr:

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Vazhnov Alexey, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available (3.15-rc6) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-3.15-rc6

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Alexey Vazhnov (vazhnov)]

With kernel 3.15-rc6 my system can't booted, stalled after connecting swap without reporting errors. Not responded to Ctrl+Alt+Del and Alt+SysRq+r+e+i+s+u+b.
With kernel 3.14.4 system worked fine 21+ hours.

[penalvch (penalvch)]

Vazhnov Alexey, when using the kernel provided by default in Ubuntu, would it work fine for 21+ hours?

[Alexey Vazhnov (vazhnov)]

No, with default kernel 3.13.0-24 system crashed several times a day.

[penalvch (penalvch)]

Vazhnov Alexey, the next step is to fully reverse commit bisect in order to identify the fix commit. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?

[Alexey Vazhnov (vazhnov)]

With kernel 3.14.4 uptime is 33 days, works without this bug.
I shall trying to make "reverse bisect", sorry for delay.

[Aleksey Vazhnov (aleksey-vazhnov)]

3.13.0-27 and newer kernels from standard repository works without problem. Bug may be closed, thanks!

[Launchpad Janitor (janitor)]

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