[Bug 567805] [NEW] Lucid: system freezes under heavy network+disk - mainline kernel 2.6.34-rc5 works

[Daniel Dickinson]

Public bug reported:

With kernel 2.6.32-21.32 I consistently get system freezes while
restoring data from a remote tape backup using amanda.  The tape drive
is on a server, and I access it from the affected workstation using
amrecover.

The restore causes heavy network (max for 100Mbit network which is what
I have) and disk (which is a linux software RAID5 array on three SATA-II
hard drives connected to a Silicon Image fakeRAID controller (not using
the fakeRAID).

After about 30 minutes of this, the system reports different kernel
related crashes.  CPU is not maxed on either CPU until the crash (i.e.
during the normal part of the restore the CPU is 30-40% on both CPU, but
when the system crashes one CPU is stuck at 100%)

Using the mainline kernel 2.6.34-0206034rc5 there is no problem.

Which kernel is the final Lucid release going to use?

Also I had no problems on Karmic Koala.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-21-generic 2.6.32-21.32
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  daniel     2212 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xfc000000 irq 20'
   Mixer name	: 'Realtek ALC883'
   Components	: 'HDA:10ec0883,1458c601,00100002'
   Controls      : 40
   Simple ctrls  : 22
Date: Wed Apr 21 06:14:31 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=f1947840-cfe8-45c4-98b1-ff75dc756947
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. M61PME-S2P
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-21-generic root=/dev/mapper/hostname-root ro quiet splash
ProcEnviron:
 LANG=en_CA.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 
SourcePackage: linux
dmi.bios.date: 12/30/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: M61PME-S2P
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd12/30/2008:svnGigabyteTechnologyCo.,Ltd.:pnM61PME-S2P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnM61PME-S2P:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: M61PME-S2P
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid needs-upstream-testing regression-potential

-- 
Lucid: system freezes under heavy network+disk - mainline kernel 2.6.34-rc5 works
https://bugs.launchpad.net/bugs/567805
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