*** This bug is a duplicate of bug 1518457 ***
https://bugs.launchpad.net/bugs/1518457
** This bug has been marked a duplicate of bug 1518457
kswapd0 100% CPU usage
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https://bugs.launchpad.net/bugs/689262
Title:
System hang under high load - kswapd
Status in linux package in Ubuntu:
Expired
Bug description:
I get reproducible system hangs within minutes, apparently under high
load. There's no message left in the logs or under X, sound plays
repeatedly the same 1-2 seconds of music, and the computer doesn't
respond anymore (not even to short pressing the power button, which
normally triggers a clean shutdown), but I got the following displayed
in a text console, as I was trying to perform a backup there with
rdiff-backup:
BUG: soft lockup - CPU#0 stuck for 61s! (kswapd0: 26)
Process kswapd0 (pid: 26, ti=f7214000 task=f713bf70 task.ti=f7214000)
Stack:
Call trace:
Code: c1 fa 66 66 90 66 90 89 c8 e8 68 36 b6 ff 90 5b 5d c3 8d 74 26 00 55 89
e5 53 0f 1f 44 00 00 89 d3 e8 90 36 b6 ff 90 89 d8 50 9d <66> 66 66 90 5b 5d c3
8d 74 26 00 55 89 e5 0f 1f 44 00 00 ba ff
The message repeats roughly every minute, just the "Code:" part being
different, but the computer doesn't answer in any way whatsoever. This
is relatively easy reproducible: start music (from Internet radio in
Rhythmbox), load a flash video in Firefox, then switch to a console
and do a "find . -type f -exec cat {} > /dev/null \;" (this makes it
happen immediately - normal usage with Firefox, Rhytmbox, Evolution
and PDF viewing in Evince or loading an OpenOffice Writer document
also make it hang within maybe 10 minutes, without disk-intensive
operations like find or rdiff-backup).
I can reproduce this behavior with both 2.6.35-23 from Ubuntu 10.10
and 2.6.35-24 from proposed-updates. I also tried 2.6.35.9 from
mainline, but the WiFi USB stick doesn't work with that version, and I
could only do "find", which didn't trigger the hang (couldn't really
generate high loads without a network connection). However, by booting
with 2.6.32 (leftover after upgrading from 10.04, I guess), I have an
absolutely stable system: I can't get it to hang, no matter what I do
(not even a single hang, despite testing for almost a week under high
load, including the steps mentioned before).
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-24-generic 2.6.35-24.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: meike 1813 F.... pulseaudio
/dev/snd/controlC1: meike 1813 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'IXP'/'ATI IXP rev 2 with ALC655 at 0xfe029000, irq 17'
Mixer name : 'Realtek ALC655 rev 0'
Components : 'AC97a:414c4760'
Controls : 41
Simple ctrls : 26
Card1.Amixer.info:
Card hw:1 'Device'/'USB VoIP Device at usb-0000:00:13.2-3.2, full speed'
Mixer name : 'USB Mixer'
Components : 'USB05e1:2010'
Controls : 4
Simple ctrls : 2
Date: Sun Dec 12 14:06:52 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=eb6f761a-06fa-459b-bf01-8554b84d0cc1
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-24-generic
root=UUID=d69674a5-188d-445d-a4e8-6e779690f937 ro quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
dmi.bios.date: 02/13/2006
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: RS482-M
dmi.chassis.type: 3
dmi.modalias:
dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd02/13/2006:svn:pn:pvr:rvn:rnRS482-M:rvr:cvn:ct3:cvr:
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