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[Luis Henriques <luis.henriques@xxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1215513 ***
    https://bugs.launchpad.net/bugs/1215513

** This bug is no longer a duplicate of bug 1217189
   Buffer I/O error on device zram0 (possibly causing complete machine lockup)
** This bug has been marked a duplicate of bug 1215513
   System locks up, requires hard reset

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https://bugs.launchpad.net/bugs/1223273

Title:
  zram-related errors ("Buffer I/O error", "scheduling while atomic")
  and complete lockup..

Status in “linux” package in Ubuntu:
  New

Bug description:
  I'm seeing errors such as these:

  Sep  9 08:41:26 xubuntu kernel: [   20.641594] Buffer I/O error on device zram0, logical block 256349
  Sep  9 08:41:26 xubuntu kernel: [   20.641599] Buffer I/O error on device zram0, logical block 256349
  Sep  9 08:41:26 xubuntu kernel: [   20.642234] Buffer I/O error on device zram0, logical block 256349
  Sep  9 08:41:26 xubuntu kernel: [   20.642241] Buffer I/O error on device zram0, logical block 256349
  Sep  9 08:41:26 xubuntu kernel: [   20.642245] Buffer I/O error on device zram0, logical block 256349

  and these in my syslog:

  Sep  9 15:47:29 xubuntu kernel: [25592.050279] BUG: scheduling while atomic: colord/1741/0x00000001
  Sep  9 15:47:29 xubuntu kernel: [25592.050283] Modules linked in: arc4 rt2800usb rt2800lib rt2x00usb rt2x00lib mac80211 cfg80211 usblp ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt option usb_wwan usbserial pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) dm_crypt mceusb clip atm rfcomm parport_pc bnep ppdev bluetooth binfmt_misc nls_utf8 isofs tda1004x saa7134_dvb videobuf_dvb dvb_core saa7134_alsa rc_hauppauge ir_kbd_i2c tda827x snd_usb_audio uvcvideo snd_usbmidi_lib snd_hda_codec_realtek joydev tda8290 snd_hda_intel snd_hda_codec snd_hwdep tuner snd_pcm dcdbas snd_seq_midi snd_rawmidi snd_seq_midi_event ir_lirc_codec lirc_dev snd_seq ir_mce_kbd_decoder ir_sony_decoder ir_jvc_decoder saa7134 ir_rc6_decoder ir_rc5_decoder snd_timer snd_seq_device ir_nec_decoder psmouse rc_core videobuf_dma_sg videobuf_core v4l2_common serio_raw videodev tveeprom snd soundcore snd_page_alloc mac_hid nvram lp parport hid_microsoft hid_logitech_dj usbhid hid floppy i915 drm_kms_helper drm usb_storage e1000e i2c_al
  Sep  9 15:47:29 xubuntu kernel: go_bit video zram(C)

  The machine also periodically freezes, not responding to mouse or
  keyboard or remote ssh (but it does to ping.)

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-53-generic-pae 3.2.0-53.81
  ProcVersionSignature: Ubuntu 3.2.0-52.78-generic-pae 3.2.48
  Uname: Linux 3.2.0-52-generic-pae i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  steved     3250 F.... pulseaudio
   /dev/snd/controlC1:  steved     3250 F.... pulseaudio
   /dev/snd/controlC0:  steved     3250 F.... pulseaudio
   /dev/snd/pcmC0D0p:   steved     3250 F...m pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfdff4000 irq 43'
     Mixer name	: 'Realtek ALC888'
     Components	: 'HDA:10ec0888,1028020d,00100001'
     Controls      : 41
     Simple ctrls  : 23
  Card1.Amixer.info:
   Card hw:1 'U0x46d0x825'/'USB Device 0x46d:0x825 at usb-0000:00:1a.7-6.2, high speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB046d:0825'
     Controls      : 2
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'Mic',0
     Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
     Capture channels: Mono
     Limits: Capture 0 - 6144
     Mono: Capture 6144 [100%] [30.00dB] [on]
  Card2.Amixer.info:
   Card hw:2 'SAA7134'/'saa7133[0] at 0xfddff000 irq 21'
     Mixer name	: 'SAA7134 Mixer'
     Components	: ''
     Controls      : 6
     Simple ctrls  : 3
  Date: Tue Sep 10 11:03:12 2013
  HibernationDevice: RESUME=UUID=89d4ff92-8b3f-4425-840e-1393d3e4b7c1
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120822.4)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: Dell Inc. Inspiron 530
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-52-generic-pae root=/dev/mapper/lvg2-precise ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-52-generic-pae N/A
   linux-backports-modules-3.2.0-52-generic-pae  N/A
   linux-firmware                                1.79.6
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/20/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.0.15
  dmi.board.name: 0K216C
  dmi.board.vendor: Dell Inc.
  dmi.board.version: ���
  dmi.chassis.type: 3
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: OEM
  dmi.modalias: dmi:bvnDellInc.:bvr1.0.15:bd06/20/2008:svnDellInc.:pnInspiron530:pvr:rvnDellInc.:rn0K216C:rvr:cvnDellInc.:ct3:cvrOEM:
  dmi.product.name: Inspiron 530
  dmi.sys.vendor: Dell Inc.

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