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[Vladimir Andreev <volodya@xxxxxxxxxxxx>]

I understood that this crash was related to efivarfs auto mount in
kernel 3.9. Kernel 3.10 and 3.11 doesn't do it automatically, that leads
to successful boot. But manual attempt to mount efivarfs in these
versions of kernel also leads to system crash.

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https://bugs.launchpad.net/bugs/1203098

Title:
  BUG: unable to handle kernel paging request at 000000008e34dd1c; RIP:
  0010:[<000000008e34dd1c>] [<000000008e34dd1c>] 0x8e34dd1b

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I have Intel server based on S5500BC motherboard. After upgrading from
  3.2.0 kernel to any higher version I have system crash during boot.

  WORKAROUND: Add 'noefi' as kernel parameter.

  Begin: Running /scripts/init-bottom ... done.
  [ 38.213167] BUG: unable to handle kernel paging request at 000000008e34dd1c
  [ 38.296766] IP: [<000000008e34dd1c>] 0x8e34dd1b
  [ 38.351108] PGD 2600e0067 PUD 0
  [ 38.389939] Oops: 0010 [#1] SMP
  [ 38.428772] Modules linked in: raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx hid_generic raid1 e1000e raid0 ptp usbhid multipath ahci libahci hid pps_core linear
  [ 38.646663] CPU 5
  [ 38.668628] Pid: 469, comm: mount Not tainted 3.9.0-030900-generic #201304291257 Intel Corporation S5500BC/S5500BC
  [ 38.794781] RIP: 0010:[<000000008e34dd1c>] [<000000008e34dd1c>] 0x8e34dd1b
  [ 38.878262] RSP: 0018:ffff8802631f9bd8 EFLAGS: 00010086
  [ 38.941860] RAX: ffff88008f5a7218 RBX: ffff88026367b408 RCX: ffff88026367b008
  [ 39.027316] RDX: ffff88026367b408 RSI: ffff8802631f9d30 RDI: ffff88026367b008
  [ 39.112773] RBP: ffff88026367b828 R08: ffff88026367b828 R09: ffff8802631f9d30
  [ 39.198230] R10: 0000000000000000 R11: ffffffff81845560 R12: ffff880266bf4690
  [ 39.283686] R13: ffffffff81f6b158 R14: ffff88026367b408 R15: ffff88026367b008
  [ 39.369141] FS: 00007f34a59fa800(0000) GS:ffff8802672a0000(0000) knlGS:0000000000000000
  [ 39.466046] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [ 39.534851] CR2: 000000008e34dd1c CR3: 0000000260094000 CR4: 00000000000007e0
  [ 39.620307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  [ 39.705762] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  [ 39.791219] Process mount (pid: 469, threadinfo ffff8802631f8000, task ffff88025fdc9750)
  [ 39.888122] Stack:
  [ 39.912165] ffff88008e3697a3 ffffea00097e24c0 ffff880266c02700 0000000000000000
  [ 40.001161] ffff88026383de47 0000000000000000 ffff8802631f9cb0 ffffffff81a74b7d
  [ 40.090154] ffff8802631f9c78 ffff8802631f9c30 ffff88008e369768 ffff88026367b008
  [ 40.179150] Call Trace:
  [ 40.208408] [<ffffffff810559eb>] ? efi_call5+0x4b/0x80
  [ 40.270966] [<ffffffff811b5e84>] ? __d_alloc+0x34/0x180
  [ 40.334562] [<ffffffff811b5eaf>] ? __d_alloc+0x5f/0x180
  [ 40.398162] [<ffffffff81054e5f>] ? virt_efi_get_variable+0x2f/0x40
  [ 40.473213] [<ffffffff815a99bb>] ? efivarfs_fill_super+0x1eb/0x2f0
  [ 40.548260] [<ffffffff815a97d0>] ? efivarfs_lookup+0x50/0x50
  [ 40.617064] [<ffffffff811a2145>] ? mount_single+0xb5/0xe0
  [ 40.682744] [<ffffffff815a9418>] ? efivarfs_mount+0x18/0x20
  [ 40.750507] [<ffffffff811a2343>] ? mount_fs+0x43/0x1b0
  [ 40.813066] [<ffffffff811bbd43>] ? find_filesystem+0x63/0x80
  [ 40.881869] [<ffffffff811bcf16>] ? vfs_kern_mount+0x76/0x120
  [ 40.950672] [<ffffffff811be354>] ? do_new_mount+0xa4/0x1f0
  [ 41.017393] [<ffffffff811bfb56>] ? do_mount+0x1e6/0x220
  [ 41.080994] [<ffffffff811bfc20>] ? sys_mount+0x90/0xe0
  [ 41.143552] [<ffffffff8170d4dd>] ? system_call_fastpath+0x1a/0x1f
  [ 41.217556] Code: Bad RIP value.
  [ 41.257432] RIP [<000000008e34dd1c>] 0x8e34dd1b
  [ 41.312810] RSP <ffff8802631f9bd8>
  [ 41.354552] CR2: 000000008e34dd1c
  [ 41.394212] ---[ end trace 3864a6ce97098ad5 ]---
  [ 41.468067] Adding 9757564k swap on /dev/md1. Priority:-1 extents:1 across:9757564k
  [ 41.598047] EXT4-fs (md0): re-mounted. Opts: errors=remount-ro
  [ 41.863427] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
  [ 42.054903] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-49-generic 3.2.0-49.75
  ProcVersionSignature: Ubuntu 3.2.0-49.75-generic 3.2.46
  Uname: Linux 3.2.0-49-generic x86_64
  AlsaDevices:
   total 0
   crw-rw---T 1 root audio 116,  1 Jul 19 10:01 seq
   crw-rw---T 1 root audio 116, 33 Jul 19 10:01 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.0.1-0ubuntu17.3
  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: [Errno 2] No such file or directory
  Date: Fri Jul 19 19:59:20 2013
  HibernationDevice: RESUME=UUID=ae05a2f7-1352-4fa6-bb69-2eef41db0282
  InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
  IwConfig:
   lo        no wireless extensions.

   eth1      no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Intel Corporation S5500BC
  MarkForUpload: True
  PciMultimedia:

  ProcEnviron:
   LC_CTYPE=en_US.UTF-8
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-49-generic root=UUID=c5530fcd-f58c-4374-b0db-da1f8c3bc4aa ro console=ttyS0 noefi
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-49-generic N/A
   linux-backports-modules-3.2.0-49-generic  N/A
   linux-firmware                            1.79.4
  RfKill: Error: [Errno 2] No such file or directory
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/09/2012
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: S5500.86B.01.00.0061.030920121535
  dmi.board.name: S5500BC
  dmi.board.vendor: Intel Corporation
  dmi.board.version: ..........
  dmi.chassis.type: 17
  dmi.modalias: dmi:bvnIntelCorp.:bvrS5500.86B.01.00.0061.030920121535:bd03/09/2012:svnIntelCorporation:pnS5500BC:pvr....................:rvnIntelCorporation:rnS5500BC:rvr..........:cvn:ct17:cvr:
  dmi.product.name: S5500BC
  dmi.product.version: ....................
  dmi.sys.vendor: Intel Corporation
  ---
  AlsaDevices:
   total 0
   crw-rw---T 1 root audio 116,  1 Jul 19 20:19 seq
   crw-rw---T 1 root audio 116, 33 Jul 19 20:19 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.0.1-0ubuntu17.3
  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: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=ae05a2f7-1352-4fa6-bb69-2eef41db0282
  InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
  IwConfig:
   lo        no wireless extensions.

   eth1      no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Intel Corporation S5500BC
  MarkForUpload: True
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=xterm-256color
   SHELL=/bin/bash
   LANG=ru_RU.UTF-8
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-49-generic root=UUID=c5530fcd-f58c-4374-b0db-da1f8c3bc4aa ro console=ttyS0
  ProcVersionSignature: Ubuntu 3.2.0-49.75-generic 3.2.46
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-49-generic N/A
   linux-backports-modules-3.2.0-49-generic  N/A
   linux-firmware                            1.79.4
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  precise
  Uname: Linux 3.2.0-49-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare storage sudo
  dmi.bios.date: 03/09/2012
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: S5500.86B.01.00.0061.030920121535
  dmi.board.name: S5500BC
  dmi.board.vendor: Intel Corporation
  dmi.board.version: ..........
  dmi.chassis.type: 17
  dmi.modalias: dmi:bvnIntelCorp.:bvrS5500.86B.01.00.0061.030920121535:bd03/09/2012:svnIntelCorporation:pnS5500BC:pvr....................:rvnIntelCorporation:rnS5500BC:rvr..........:cvn:ct17:cvr:
  dmi.product.name: S5500BC
  dmi.product.version: ....................
  dmi.sys.vendor: Intel Corporation

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