** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Yakkety)
Status: New => Triaged
** Changed in: linux (Ubuntu Yakkety)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1671753
Title:
"NMI watchdog: BUG: soft lockup" and "page allocation stalls" errors
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Yakkety:
Triaged
Bug description:
My computer running Ubuntu Yakkety with 32 bit 4.8.0-41-generic kernel
often locks up. Error messages like this appear in syslog:
Mar 10 09:49:22 ReThinkCentre kernel: [47896.075600] NMI watchdog:
BUG: soft lockup - CPU#0 stuck for 23s! [kswapd0:38]
In later mainline kernels (4.10.0, or maybe even 4.9.0), the error
message changes to this:
Mar 4 22:07:04 ReThinkCentre kernel: [ 2815.183424] kthreadd: page
allocation stalls for 11600ms, order:1,
mode:0x17000c0(GFP_KERNEL_ACCOUNT|__GFP_NOTRACK)
I believe the root cause is the same behind the two kinds of error
messages, the latter being more specific. One kernel version never
shows these messages mixed, they either log "NMI watchdog" or "page
allocation stalls", there is no kernel version which logs both.
With kernel bisection, I found that the following commit solves the
problem in the mainline kernel:
71ab6cfe88dcf9f6e6a65eb85cf2bda20a257682 mm, vmscan: consider eligible
zones in get_scan_count
However, this patch doesn't easily apply to 4.8.0. I tried to backport
it with git cherry-pick, but it run into conflicts.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-41-generic 4.8.0-41.44
ProcVersionSignature: Ubuntu 4.8.0-41.44-generic 4.8.17
Uname: Linux 4.8.0-41-generic i686
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: kutya 18471 F.... pulseaudio
Date: Fri Mar 10 09:53:23 2017
HibernationDevice: RESUME=UUID=e0ebed7b-f012-4399-a6d9-584b8c64950b
InstallationDate: Installed on 2014-08-16 (936 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
MachineType: Hewlett-Packard HP Compaq dc5800 Small Form Factor
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=hu_HU.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-41-generic
root=/dev/mapper/centrevg-rootlv ro rootflags=subvol=@ rootdelay=300
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.8.0-41-generic N/A
linux-backports-modules-4.8.0-41-generic N/A
linux-firmware 1.161.1
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to yakkety on 2017-01-22 (47 days ago)
dmi.bios.date: 02/13/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786F2 v01.55
dmi.board.asset.tag: CZC8428PV6
dmi.board.name: 2820h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC8428PV6
dmi.chassis.type: 4
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvr786F2v01.55:bd02/13/2009:svnHewlett-Packard:pnHPCompaqdc5800SmallFormFactor:pvr:rvnHewlett-Packard:rn2820h:rvr:cvnHewlett-Packard:ct4:cvr:
dmi.product.name: HP Compaq dc5800 Small Form Factor
dmi.sys.vendor: Hewlett-Packard
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