← Back to team overview

kernel-packages team mailing list archive

[Bug 1217189] Re: Buffer I/O error on device zram0


** Changed in: linux-lts-raring (Ubuntu)
       Status: Confirmed => Fix Released

** Changed in: linux (Ubuntu)
       Status: Confirmed => Fix Released

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

  Buffer I/O error on device zram0

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux-lts-raring” package in Ubuntu:
  Fix Released

Bug description:
  This is on linux-image-generic-lts-raring (which I recently upgraded
  to 3.8.0-29; the problem didn't occur before upgrading AFAIR)

  I see this junk in my dmesg when creating / formatting a zram swap,
  and then periodically. Then at some point after heavy swapping
  incidents, the machine locks up. "Correlation does not imply
  causation, but it does waggle its eyebrows suggestively" and all that.


  zram: module is from the staging directory, the quality is unknown, you have been warned.
  zram: num_devices not specified. Using default: 1
  zram: Creating 1 devices
  Adding 1031648k swap on /dev/zram0.  Priority:100 extents:1 across:1031648k SS
  Buffer I/O error on device zram0, logical block 257912 [repeated 10 times]
  BUG: scheduling while atomic: rsyslogd/1439/0x00000001
  Pid: 1439, comm: rsyslogd Tainted: PF       WC O 3.8.0-29-generic #42~precise1-Ubuntu
  [20931.796635] Pid: 1439, comm: rsyslogd Tainted: PF       WC O 3.8.0-29-generic #42~precise1-Ubuntu
  [20931.796638] Call Trace:
  [20931.796649]  [<c1619449>] __schedule_bug+0x52/0x5e
  [20931.796653]  [<c162c265>] __schedule+0x575/0x5f0
  [20931.796660]  [<f8439e06>] ? zram_make_request+0xe6/0x100 [zram]
  [20931.796666]  [<c111c38d>] ? release_pages+0x18d/0x1c0
  [20931.796669]  [<c162c573>] schedule+0x23/0x60
  [20931.796673]  [<c162d0fd>] rwsem_down_failed_common+0x9d/0xf0
  [20931.796677]  [<c162d162>] rwsem_down_write_failed+0x12/0x20
  [20931.796681]  [<c12f809a>] call_rwsem_down_write_failed+0x6/0x8
  [20931.796685]  [<c162ba44>] ? down_write+0x24/0x30
  [20931.796689]  [<f8439169>] zram_slot_free_notify+0x29/0x50 [zram]
  [20931.796693]  [<f8439140>] ? zram_stat64_inc+0x30/0x30 [zram]
  [20931.796700]  [<c11460bc>] swap_entry_free+0xdc/0x170
  [20931.796703]  [<c162d100>] ? rwsem_down_failed_common+0xa0/0xf0
  [20931.796708]  [<c1146458>] swap_free+0x28/0x40
  [20931.796712]  [<c1134ba0>] do_swap_page+0x390/0x6f0
  [20931.796717]  [<c10180f8>] ? sched_clock+0x8/0x10
  [20931.796721]  [<c11365aa>] handle_pte_fault+0x21a/0x2b0
  [20931.796726]  [<c10451e1>] ? kmap_atomic_prot+0xf1/0x120
  [20931.796730]  [<c113746a>] handle_mm_fault+0x1fa/0x2d0
  [20931.796735]  [<c1630ad0>] __do_page_fault+0x190/0x4f0
  [20931.796740]  [<c12f63bc>] ? sprintf+0x1c/0x20
  [20931.796744]  [<c104c132>] ? print_time.part.4+0x82/0xc0
  [20931.796748]  [<c1630e30>] ? __do_page_fault+0x4f0/0x4f0
  [20931.796752]  [<c1630e3d>] do_page_fault+0xd/0x10
  [20931.796756]  [<c162dc17>] error_code+0x67/0x6c
  [20931.796759]  [<c12f8716>] ? __copy_to_user_ll+0x46/0x70
  [20931.796763]  [<c12f8970>] copy_to_user+0x40/0x60
  [20931.796767]  [<c104e218>] syslog_print+0xc8/0x210
  [20931.796770]  [<c104eae6>] do_syslog+0x206/0x390
  [20931.796775]  [<c106d570>] ? add_wait_queue+0x50/0x50
  [20931.796780]  [<c11c3680>] ? kmsg_poll+0x50/0x50
  [20931.796784]  [<c11c36d0>] kmsg_read+0x50/0x60
  [20931.796788]  [<c11b6584>] proc_reg_read+0x64/0xa0
  [20931.796793]  [<c116469c>] vfs_read+0x8c/0x160
  [20931.796797]  [<c10a898d>] ? sys_futex+0xed/0x130
  [20931.796801]  [<c11b6520>] ? proc_reg_write+0xa0/0xa0
  [20931.796805]  [<c11647b7>] sys_read+0x47/0x80
  [30855.181542] Write-error on swap-device (251:0:131064)
  [43457.030155] Write-error on swap-device (251:0:131064)
  [43705.090381] Buffer I/O error on device zram0, logical block 16383

  Anyway, there's a couple of lkml messages related to this "Buffer I/O
  error on device zram0", please investigate

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.8.0-29-generic 3.8.0-29.42~precise1
  ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic
  Uname: Linux 3.8.0-29-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: i386
  Date: Tue Aug 27 07:33:37 2013
  EcryptfsInUse: Yes
  MarkForUpload: True
   PATH=(custom, no user)
  SourcePackage: linux-lts-raring
  UpgradeStatus: No upgrade log present (probably fresh install)
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.8.0-29-lowlatency.
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: i386
   /dev/snd/controlC0:  muresan   29305 F.... pulseaudio
   /dev/snd/pcmC0D0p:   muresan   29305 F...m pulseaudio
   /dev/snd/controlC1:  muresan   29305 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
   Card hw:0 'Intel'/'HDA Intel at 0xfebfc000 irq 44'
     Mixer name	: 'SigmaTel STAC9205'
     Components	: 'HDA:838476a0,102801f1,00100204 HDA:14f12c06,14f1000f,00100000'
     Controls      : 26
     Simple ctrls  : 12
   Card hw:1 'USB'/'E-MU Systems, Inc. E-MU 0202 | USB at usb-0000:00:1d.0-2, full speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB041e:3f02'
     Controls      : 4
     Simple ctrls  : 2
  DistroRelease: Ubuntu 12.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=88836c66-16ea-407f-8753-3190c09ca82f
   lo        no wireless extensions.
   eth0      no wireless extensions.
  MachineType: Dell Inc. Inspiron 1520
  MarkForUpload: True
  NonfreeKernelModules: nvidia
  Package: linux-lts-raring
   PATH=(custom, no user)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-29-lowlatency root=UUID=a7047dd8-61aa-4cbe-b36d-697a5e7ee64b ro
  ProcVersionSignature: Ubuntu 3.8.0-29.21-lowlatency
   linux-restricted-modules-3.8.0-29-lowlatency N/A
   linux-backports-modules-3.8.0-29-lowlatency  N/A
   linux-firmware                               1.79.6
   0: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no
  StagingDrivers: zram
  Tags:  precise staging
  Uname: Linux 3.8.0-29-lowlatency i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin audio cdrom davfs2 dialout dip floppy fuse lpadmin netdev plugdev powerdev sambashare scanner video
  dmi.bios.date: 02/03/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0UW306
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd02/03/2008:svnDellInc.:pnInspiron1520:pvr:rvnDellInc.:rn0UW306:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Inspiron 1520
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to: