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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

nocturo, as per http://www.supermicro.com/support/resources/results.aspx
an update is available for your BIOS (R2.1b). If you update to this
during your maintenance window, does it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Thank you for your understanding.

** Tags added: bios-outdated-2.1b needs-upstream-testing regression-
potential

** Summary changed:

- NFS raw_spin_lock hung task
+ [Super Micro X8DTT] NFS raw_spin_lock hung task

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

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https://bugs.launchpad.net/bugs/1060425

Title:
  [Super Micro X8DTT] NFS raw_spin_lock hung task

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I've been flooded with NFS spin locks, with following mount options:
  192.168.200.1:/mnt/storage      /home   nfs     defaults,intr,rsize=4096,wsize=4096,noatime,nodiratime,actimeo=5      0       0

  without attribute caching the system is unusable so I can't provide
  whether it happens with noac.

  [644748.895239] Call Trace:
  [644748.895253]  [<ffffffff8165a4fe>] ? _raw_spin_lock+0xe/0x20
  [644748.895267]  [<ffffffff816585ef>] schedule+0x3f/0x60
  [644748.895278]  [<ffffffff816593f7>] __mutex_lock_slowpath+0xd7/0x150
  [644748.895290]  [<ffffffff8165900a>] mutex_lock+0x2a/0x50
  [644748.895303]  [<ffffffff81184c76>] do_lookup+0x1d6/0x310
  [644748.895316]  [<ffffffff8116333c>] ? kmem_cache_alloc_trace+0x10c/0x140
  [644748.895327]  [<ffffffff81185dc0>] do_last+0xe0/0x730
  [644748.895339]  [<ffffffff811877b1>] path_openat+0xd1/0x3f0
  [644748.895350]  [<ffffffff811830f5>] ? putname+0x35/0x50
  [644748.895360]  [<ffffffff81187b53>] ? user_path_at_empty+0x63/0xa0
  [644748.895386]  [<ffffffffa02747db>] ? nfs_attribute_cache_expired+0x1b/0x70 [nfs]
  [644748.895398]  [<ffffffff81187bf2>] do_filp_open+0x42/0xa0
  [644748.895411]  [<ffffffff81319321>] ? strncpy_from_user+0x31/0x40
  [644748.895422]  [<ffffffff81182f3a>] ? do_getname+0x10a/0x180
  [644748.895434]  [<ffffffff8165a4fe>] ? _raw_spin_lock+0xe/0x20
  [644748.895447]  [<ffffffff81194eb7>] ? alloc_fd+0xf7/0x150
  [644748.895459]  [<ffffffff8117722d>] do_sys_open+0xed/0x220
  [644748.895469]  [<ffffffff81177380>] sys_open+0x20/0x30
  [644748.895480]  [<ffffffff81662b02>] system_call_fastpath+0x16/0x1b

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-31-generic 3.2.0-31.50
  ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
  Uname: Linux 3.2.0-31-generic x86_64
  AlsaDevices:
   total 0
   crw-rw---T 1 root audio 116,  1 Sep 25 10:15 seq
   crw-rw---T 1 root audio 116, 33 Sep 25 10:15 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/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.
  Date: Tue Oct  2 21:57:30 2012
  HibernationDevice: RESUME=UUID=e7aefc01-9dc5-49ca-be7a-cdbc74dee48e
  InstallationMedia: Ubuntu-Server 10.04.3 LTS "Lucid Lynx" - Release amd64 (20110719.2)
  IwConfig:
   lo        no wireless extensions.
   
   eth1      no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: Supermicro X8DTT
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-31-generic root=/dev/mapper/hostname-root ro quiet
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-31-generic N/A
   linux-backports-modules-3.2.0-31-generic  N/A
   linux-firmware                            1.79.1
  RfKill: Error: [Errno 2] No such file or directory
  SourcePackage: linux
  UpgradeStatus: Upgraded to precise on 2012-09-24 (8 days ago)
  dmi.bios.date: 02/11/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080016
  dmi.board.asset.tag: 1234567890
  dmi.board.name: X8DTT
  dmi.board.vendor: Supermicro
  dmi.board.version: 2.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 17
  dmi.chassis.vendor: Supermicro
  dmi.chassis.version: 1234567890
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080016:bd02/11/2011:svnSupermicro:pnX8DTT:pvr1234567890:rvnSupermicro:rnX8DTT:rvr2.0:cvnSupermicro:ct17:cvr1234567890:
  dmi.product.name: X8DTT
  dmi.product.version: 1234567890
  dmi.sys.vendor: Supermicro

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