file splice in pool causes network timeout which freezes both systems

[Jim Kyle]

I first noticed this about three weeks ago while scrolling through a large PDF file via rdesktop; finally located error messages in kern.log today. Symptom is sudden loss of network connection. Both systems involved must be shut down, allowed to cool for several minutes, then re-booted, to restore network actions. The kern.log entry indicates timeout during file-splice action but I have not found more detail than that.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-60-generic 3.2.0-60.91
ProcVersionSignature: Ubuntu 3.2.0-60.91-generic 3.2.55
Uname: Linux 3.2.0-60-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: NVidia [HDA NVidia], device 0: ALC888 Analog [ALC888 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jk 3220 F.... pulseaudio
 /dev/snd/pcmC0D0c: jk 3220 F...m pulseaudio
 /dev/snd/pcmC0D0p: jk 3220 F...m pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xfe028000 irq 23'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,103c2a6c,00100202'
   Controls : 37
   Simple ctrls : 20
Date: Fri Apr 18 11:53:57 2014
HibernationDevice: RESUME=UUID=c2a60540-1b77-4cbb-b952-68b623a6998f
InstallationMedia: Xubuntu 10.04 "Lucid Lynx" - Release i386 (20100429)
IwConfig:
 lo no wireless extensions.

 eth1 no wireless extensions.

 eth0 no wireless extensions.
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
MachineType: Compaq-Presario NP185AA-ABA CQ5110F
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-60-generic root=UUID=d4c8bd87-238d-4b1a-b144-2bb17547d7d6 ro
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-60-generic N/A
 linux-backports-modules-3.2.0-60-generic N/A
 linux-firmware 1.79.11
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2013-06-04 (318 days ago)
dmi.bios.date: 03/20/2009
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 5.38
dmi.board.name: NARRA5
dmi.board.vendor: PEGATRON CORPORATION
dmi.board.version: 5.00
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr5.38:bd03/20/2009:svnCompaq-Presario:pnNP185AA-ABACQ5110F:pvr:rvnPEGATRONCORPORATION:rnNARRA5:rvr5.00:cvnHewlett-Packard:ct3:cvrChassisVersion:
dmi.product.name: NP185AA-ABA CQ5110F
dmi.sys.vendor: Compaq-Presario

[Brad Figg (brad-figg)]

This change was made by a bot.

[Jim Kyle (jim-jimkyle)]

For what it's worth, the same thing happens in Linux 3.2.0-59-generic i686; I don't have any older kernels still in place on either system to see if it goes farther back than that.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.15 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'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v3.15-rc2-trusty/

[Jim Kyle (jim-jimkyle)]

On 04/21/2014 11:26 AM, Joseph Salisbury wrote:
> Would it be possible for you to test the latest upstream kernel? Refer
> to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
> v3.15 kernel[0].

Unfortunately, no; my main machine failed to start on power-up yesterday
and I'm running on the only backup machine I have.

I did note in a previous comment that the same thing happens on the
previous kernel, which was available on this backup machine.

> If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
> Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

For the same reason, I'm unable to add a tag to the report until I can
get the main machine powered up again, since all my Launchpad
credentials are stored on it. Can you add the appropriate tag for me,
please?

Thank you.

--
Jim Kyle

[Launchpad Janitor (janitor)]

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