kernel-packages team mailing list archive

[Dan Muresan <1218278@xxxxxxxxxxxxxxxxxx>]

@timg-tpi: Have you seen bug #1217189, involving machine lock-ups due to
this error, probably triggered after heavy swapping?

Do you have any suggestions as to why regular raring users seem
unaffected by this bug (or at least they're not complaining)?

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https://bugs.launchpad.net/bugs/1218278

Title:
  When creating a swap device using zram I get Buffer I/O errors

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I use zram as swap device, but get Buffer I/O errors when creating a
  swap device.

  1. modprobe zram
  2. echo 2097152000 > /sys/block/zram0/disksize
  3. mkswap /dev/zram0

  tail /varlog/syslog

  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.003716] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.005792] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.007918] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.009930] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.011965] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.012917] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.013793] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.014680] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.015542] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.016395] Buffer I/O error on device zram0, logical block 511999

  cat /proc/version_signature
  Ubuntu 3.8.0-29.42-generic 3.8.13.
  ---
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D3', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  DistroRelease: Ubuntu 13.04
  MachineType: Hewlett-Packard HP Compaq 8100 Elite CMT PC
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: ro initrd=initrd.img nbdroot=10.7.28.49:9577 nbdswap=10.7.28.49:9573 clientid=lin BOOT_IMAGE=vmlinuz
  ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RfKill:

  Tags:  raring
  Uname: Linux 3.8.0-29-generic x86_64
  UpgradeStatus: Upgraded to raring on 2013-07-09 (51 days ago)
  UserGroups: admin sudo
  WifiSyslog:

  dmi.bios.date: 12/16/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 786H1 v01.02
  dmi.board.asset.tag: 11618
  dmi.board.name: 304Bh
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: 11618
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr786H1v01.02:bd12/16/2009:svnHewlett-Packard:pnHPCompaq8100EliteCMTPC:pvr:rvnHewlett-Packard:rn304Bh:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.product.name: HP Compaq 8100 Elite CMT PC
  dmi.sys.vendor: Hewlett-Packard

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