[Bug 716811] Re: [SandyBridge] kernel BUG at /build/buildd/linux-2.6.38/fs/nfsd/nfs4state.c:3132!

Fri Nov 18 12:10:25 UTC 2011

** Changed in: nfs-utils (Ubuntu)
       Status: New => Invalid

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Title:
  [SandyBridge] kernel BUG at
  /build/buildd/linux-2.6.38/fs/nfsd/nfs4state.c:3132!

Status in “linux” package in Ubuntu:
  Fix Released
Status in “nfs-utils” package in Ubuntu:
  Invalid

Bug description:
  Updated to 2.6.38-2-generic-pae from .38-1 this morning on this
  SandyBridge system with an ATI graphics card running the opensource
  -ati driver.  I've seen this BUG twice now.  Not sure what triggers
  it.

  At the time this happened, I was typing up a reply to a bug report in
  firefox, when suddenly the display stuttered.  I had just finished
  typing "Xorg.0.log from" except what showed in the text area was
  "Xorg.0.loggggggggggggggggggggg"; then suddenly it switched to a
  console where the kernel BUG listed below was displayed.  The music
  player also stopped (was playing an internet radio station.)  I tapped
  a few keys and tried vt switching but no go, there seemed to be no
  response.  But then a few moments later I tried again and could switch
  back to vt7 and file this report.  I clicked play on the music player
  and it went back to playing music.

  This box was freshly installed a couple days ago.  I installed and set
  up an NFS server on it last night, and it seemed to work ok.  This
  morning I tried to wake the monitors from power saving, but they never
  came back.  I ssh'd in but didn't see anything unusual at the time
  other than being on .38-1, however now reviewing my /var/log/kern.log
  I see it had failed with this same BUG at 8am so guessing it might
  have been the same problem.  Since I was on .38-1 I decided to upgrade
  to .38-2 before reporting it.  Not long after rebooting onto that
  kernel I saw this BUG again, exactly as I described above, except that
  the music player did not stop (I was playing music files from an nfs
  share).  I rebooted again, and now after about 6 hrs of uptime have
  experienced it again.

  I notice it is mentioning nfs4 in the error, however afaik I'm just
  using nfs3 (I don't need any of the nfs4 features).

  One thing that's odd, since returning to vt7 I can't find the console
  where the BUG error had been printed out.  I took a photo but it's
  basically just this:

  [22144.624356] ------------[ cut here ]------------
  [22144.624884] kernel BUG at /build/buildd/linux-2.6.38/fs/nfsd/nfs4state.c:3132!
  [22144.625703] invalid opcode: 0000 [#1] SMP
  [22144.626185] last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map
  [22144.627073] Modules linked in: binfmt_misc parport_pc ppdev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer radeon ttm snd_seq_device drm_kms_helper lp drm snd soundcore joydev serio_raw xhci_hcd snd_page_alloc nfsd exportfs nfs lockd fscache nfs_acl i2c_algo_bit auth_rpcgss parport sunrpc usbhid r8169 hid ahci libahci floppy
  [22144.631845]
  [22144.632008] Pid: 1113, comm: nfsd Not tainted 2.6.38-2-generic-pae #29-Ubuntu P67A-UD4/P67A-UD4
  [22144.632995] EIP: 0060:[<f8e1bc37>] EFLAGS: 00010246 CPU: 0
  [22144.633625] EIP is at nfs4_preprocess_stateid_op+0x327/0x3a0 [nfsd]
  [22144.634333] EAX: 00000000 EBX: ec32d398 ECX: eed4295c EDX: f754ad80
  [22144.635041] ESI: 00000000 EDI: f8e31cc1 EBP: ed991eb0 ESP: ed991e88
  [22144.635750]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  [22144.636360] Process nfsd (pid: 1113, ti=ed990000 task=f6cd9940 task.ti=ed990000)
  [22144.637196] Stack:
  [22144.637418]  f8dffe36 ed991ecc f8e16441 ffffffff c5b7275c eed4293c 00000010 eed4293c
  [22144.638382]  f25ef820 f7410000 ed991ecc f8e0c675 eed4295c eed42800 f25ef800 eed42800
  [22144.639347]  eed42934 ed991f0c f8e0cdc9 f8e11520 ed991ee8 c107f1c5 f7410000 00000002
  [22144.640311] Call Trace:
  [22144.640589]  [<f8dffe36>] ? fh_verify+0x136/0x260 [nfsd]
  [22144.641196]  [<f8e16441>] ? nfsd4_encode_operation+0x61/0x180 [nfsd]
  [22144.641922]  [<f8e0c675>] nfsd4_read+0x45/0xc0 [nfsd]
  [22144.642497]  [<f8e0cdc9>] nfsd4_proc_compound+0x369/0x420 [nfsd]
  [22144.643180]  [<f8e11520>] ? nfsd4_decode_compound+0x240/0x330 [nfsd]
  [22144.643902]  [<c107f1c5>] ? groups_free+0x45/0x50
  [22144.644437]  [<f8e0c630>] ? nfsd4_read+0x0/0xc0 [nfsd]
  [22144.645021]  [<f8dfc913>] nfsd_dispatch+0xd3/0x210 [nfsd]
  [22144.645643]  [<f8d2b559>] svc_process_common+0x2c9/0x5c0 [sunrpc]
  [22144.646342]  [<f8d3758d>] ? svc_xprt_received+0x2d/0x40 [sunrpc]
  [22144.647030]  [<f8d38479>] ? svc_recv+0x479/0x730 [sunrpc]
  [22144.647648]  [<f8d2b92c>] svc_process+0xdc/0x140 [sunrpc]
  [22144.648260]  [<c1525dc0>] ? down_read+0x10/0x20
  [22144.648774]  [<f8dfc0f0>] nfsd+0xb0/0x140 [nfsd]
  [22144.649296]  [<c1041e6e>] ? complete+0x4e/0x60
  [22144.649800]  [<f8dfc040>] ? nfsd+0x0/0x140 [nfsd]
  [22144.650332]  [<c1076484>] kthread+0x74/0x80
  [22144.704641]  [<c1076410>] ? kthread+0x0/0x80
  [22144.759083]  [<c100b13e>] kernel_thread_helper+0x6/0x10
  [22144.811794] Code: fd ff ff 0f 83 2f ff ff ff eb 8d 31 f6 8d b4 26 00 00 00 00 e9 bc fd ff ff 8b 42 24 31 f6 8b 4d 08 85 c0 89 01 0f 85 aa fd ff ff <0f> 0b 8b 57 24 8b 42 20 85 c0 74 37 8b 55 08 89 02 e9 94 fd ff
  [22144.867810] EIP: [<f8e1bc37>] nfs4_preprocess_stateid_op+0x327/0x3a0 [nfsd] SS:ESP 0068:ed991e88
  [22145.219739] ---[ end trace 42f5b713d5ecc48b ]---
  [22231.170388] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-2-generic-pae 2.6.38-2.29
  Regression: Yes
  Reproducible: No
  ProcVersionSignature: Ubuntu 2.6.38-2.29-generic-pae 2.6.38-rc3
  Uname: Linux 2.6.38-2-generic-pae i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  bryce      2141 F.... pulseaudio
   /dev/snd/pcmC0D0p:   bryce      2141 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xfbff8000 irq 60'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,1458a022,00100302'
     Controls      : 32
     Simple ctrls  : 18
  Card1.Amixer.info:
   Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbbfc000 irq 61'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100100'
     Controls      : 4
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Thu Feb 10 16:48:41 2011
  Frequency: Once a day.
  HibernationDevice: RESUME=UUID=7c6eccc7-e8d3-4a5b-9ede-1888deff2e36
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. P67A-UD4
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=C
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-2-generic-pae root=UUID=2b238928-f3f1-4074-b551-2cceff54c6a4 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-2-generic-pae N/A
   linux-backports-modules-2.6.38-2-generic-pae N/A
   linux-firmware 1.46
  RfKill:

  SourcePackage: linux
  dmi.bios.date: 11/25/2010
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F4
  dmi.board.name: P67A-UD4
  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.:bvrF4:bd11/25/2010:svnGigabyteTechnologyCo.,Ltd.:pnP67A-UD4:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP67A-UD4:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: P67A-UD4
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

  [Workaround]
  Specify in /etc/defaults/nfs-kernel-server:

  # Number of servers to start up
  RPCNFSDCOUNT='8 --no-nfs-version 4'

  (From http://andy.delcambre.com/2007/06/25/disabling-nfsv4-on-
  ubuntu.html)

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