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[Mikael Hjelm <1114673@xxxxxxxxxxxxxxxxxx>]

This bug is not confined to cifs mounts in fstab. 
I can get a kernel crash if i mount it manually but too soon after boot. I have a rather fast boot since i am running on an ssd and lubuntu so i think there might be some timing. issue, either network isn't properly up or some other process is doing something fishy. 
To me it also sometimes occur if the connection to the smaba server is interrupted somehow. We had a maintenance of the VPN tunnel between two sites and that killed the mounts with fatal results.

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https://bugs.launchpad.net/bugs/1114673

Title:
  mount.cifs occasionally causes GPF error/kernel panic when mounting at
  boot [crypto_larval_kill+0x2b/0x90]

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  Seeing the same as in bug #1070256

  Linux phil-server 3.2.0-37-generic #58-Ubuntu SMP Thu Jan 24 15:28:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
  Description:    Ubuntu 12.04.2 LTS
  Release:        12.04
  Ubuntu 3.2.0-37.58-generic 3.2.35

  Following kernel update via apt-get dist-upgrade specifially this
  time, and in all other recent events of any apt-get upgrade, I am
  seeing the following (I cannot confirm it is only upgrades, but this
  tends to be the only point of any reboot).

  On boot, my CIFS mounts are not mounted and all fail.
  2x point to CIFS shares on one machine, one with anan access, one with login credentials
  1x points to a CIFS share with annon access
  All CIFS shares are Samba which I cannot provide specifics on as they are on a factory locked NAS

  Jan 31 11:34:12 phil-server kernel: [   14.665041] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
  Jan 31 11:34:14 phil-server kernel: [   16.368487] CIFS: Unknown mount option codepage
  Jan 31 11:34:14 phil-server kernel: [   16.368492] CIFS: Unknown mount option unicode
  Jan 31 11:34:14 phil-server kernel: [   16.378538] CIFS: Unknown mount option codepage
  Jan 31 11:34:14 phil-server kernel: [   16.378542] CIFS: Unknown mount option unicode
  Jan 31 11:34:14 phil-server kernel: [   16.379324] CIFS VFS: default security mechanism requested.  The default security mechanism will be upgraded from ntlm to ntlmv2 in kernel release 3.3
  Jan 31 11:34:14 phil-server kernel: [   16.384315] CIFS: Unknown mount option codepage
  Jan 31 11:34:14 phil-server kernel: [   16.384319] CIFS: Unknown mount option unicode
  Jan 31 11:34:14 phil-server kernel: [   16.385850] init: failsafe main process (742) killed by TERM signal
  Jan 31 11:34:14 phil-server kernel: [   16.541394] general protection fault: 0000 [#1] SMP
  Jan 31 11:34:14 phil-server kernel: [   16.541442] CPU 0
  Jan 31 11:34:14 phil-server kernel: [   16.541457] Modules linked in: des_generic md4 nls_utf8 cifs ext2 snd_hda_codec_analog snd_hda_intel snd_hda_codec dcdbas snd_hwdep snd_pcm ppdev mei(C) i915 drm_kms_helper drm psmouse lp i2c_algo_bit serio_raw video snd_timer snd soundcore snd_page_alloc mac_hid parport_pc parport e1000e
  Jan 31 11:34:14 phil-server kernel: [   16.541729]
  Jan 31 11:34:14 phil-server kernel: [   16.541743] Pid: 924, comm: mount.cifs Tainted: G         C   3.2.0-36-generic #57-Ubuntu Dell Inc. OptiPlex 755                 /0PU052
  Jan 31 11:34:14 phil-server kernel: [   16.541811] RIP: 0010:[<ffffffff812de70f>]  [<ffffffff812de70f>] crypto_larval_kill+0x2f/0x90
  Jan 31 11:34:14 phil-server kernel: [   16.541860] RSP: 0018:ffff88003b33d988  EFLAGS: 00010292
  Jan 31 11:34:14 phil-server kernel: [   16.541889] RAX: dead000000200200 RBX: ffff88003b8fb800 RCX: 000000000000156a
  Jan 31 11:34:14 phil-server kernel: [   16.541923] RDX: ffff88003b8f9c00 RSI: 00000000000166a0 RDI: ffffffff81c63b40
  Jan 31 11:34:14 phil-server kernel: [   16.541957] RBP: ffff88003b33d998 R08: ffffea0000ee3e00 R09: ffffffff812deca0
  Jan 31 11:34:14 phil-server kernel: [   16.541990] R10: dead000000200200 R11: 0000000000000001 R12: ffff88003ad81e00
  Jan 31 11:34:14 phil-server kernel: [   16.542022] R13: 0000000000000004 R14: ffffffffa024a0de R15: ffff88003afcae00
  Jan 31 11:34:14 phil-server kernel: [   16.542057] FS:  00007fc20103e700(0000) GS:ffff88003e200000(0000) knlGS:0000000000000000
  Jan 31 11:34:14 phil-server kernel: [   16.542105] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  Jan 31 11:34:14 phil-server kernel: [   16.542133] CR2: 00007f1e6a409000 CR3: 000000003b229000 CR4: 00000000000006f0
  Jan 31 11:34:14 phil-server kernel: [   16.542166] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  Jan 31 11:34:14 phil-server kernel: [   16.543625] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Jan 31 11:34:14 phil-server kernel: [   16.544983] Process mount.cifs (pid: 924, threadinfo ffff88003b33c000, task ffff88003afcae00)
  Jan 31 11:34:14 phil-server kernel: [   16.545363] Stack:
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  ffff88003b8fb800 ffff88003ad81e00 ffff88003b33d9b8 ffffffff812def6b
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  ffff88003adb4df6 000000000000008f ffff88003b33da08 ffffffff812df001
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  0000000000000000 0000000000000000 0000000000000000 ffff88003adb4df6
  Jan 31 11:34:14 phil-server kernel: [   16.545363] Call Trace:
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff812def6b>] crypto_alg_mod_lookup+0x6b/0x90
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff812df001>] crypto_alloc_base+0x41/0xb0
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa02310f9>] smbhash+0x49/0x130 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa023120d>] E_P24+0x2d/0x80 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa02316b7>] SMBNTencrypt+0xb7/0xe0 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa0235b4a>] setup_ntlm_response+0x8a/0x200 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa0238e6f>] CIFS_SessSetup+0x49f/0xde0 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa022fd4a>] ? cifs_buf_release+0x1a/0x30 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa022197f>] cifs_setup_session+0x6f/0x1e0 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa0221e03>] cifs_get_smb_ses+0x313/0x4a0 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa0222039>] cifs_mount+0xa9/0x5f0 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa020f961>] ? cifs_do_mount+0x91/0x280 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffffa020f985>] cifs_do_mount+0xb5/0x280 [cifs]
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff8117cf83>] mount_fs+0x43/0x1b0
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff811978fa>] vfs_kern_mount+0x6a/0xc0
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff81198e04>] do_kern_mount+0x54/0x110
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff8119a964>] do_mount+0x1a4/0x260
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff8119ae40>] sys_mount+0x90/0xe0
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  [<ffffffff81665a02>] system_call_fastpath+0x16/0x1b
  Jan 31 11:34:14 phil-server kernel: [   16.545363] Code: 53 48 83 ec 08 66 66 66 66 90 48 89 fb 48 c7 c7 40 3b c6 81 e8 a3 df 37 00 48 8b 13 48 8b 43 08 48 c7 c7 40 3b c6 81 48 89 42 08 <48> 89 10 48 b8 00 01 10 00 00 00 ad de 48 ba 00 02 20 00 00 00
  Jan 31 11:34:14 phil-server kernel: [   16.545363] RIP  [<ffffffff812de70f>] crypto_larval_kill+0x2f/0x90
  Jan 31 11:34:14 phil-server kernel: [   16.545363]  RSP <ffff88003b33d988>
  Jan 31 11:34:14 phil-server kernel: [   16.581332] ---[ end trace 5cee33813b791082 ]---
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.0.1-0ubuntu17.1
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info: Error: [Errno 2] No such file or directory
  Card0.Amixer.values: Error: [Errno 2] No such file or directory
  CurrentDmesg:
   [ 1018.822877] ACPI Warning: Incorrect checksum in table [TCPA] - 0x00, should be 0x87 (20110623/tbutils-314)
   [ 1018.823032] ACPI Warning: Incorrect checksum in table [TCPA] - 0x00, should be 0x87 (20110623/tbutils-314)
   [ 1029.391508] ACPI Warning: Incorrect checksum in table [TCPA] - 0x00, should be 0x87 (20110623/tbutils-314)
   [ 1029.391667] ACPI Warning: Incorrect checksum in table [TCPA] - 0x00, should be 0x87 (20110623/tbutils-314)
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=32ef8b44-2ff2-49cb-95d4-1d6c088b49bd
  InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: Dell Inc. OptiPlex 755
  MarkForUpload: True
  Package: linux (not installed)
  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=/vmlinuz-3.2.0-37-generic root=/dev/mapper/username--server-root ro
  ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-37-generic N/A
   linux-backports-modules-3.2.0-37-generic  N/A
   linux-firmware                            1.79.1
  RfKill: Error: [Errno 2] No such file or directory
  StagingDrivers: mei
  Tags:  precise staging
  Uname: Linux 3.2.0-37-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 08/04/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.name: 0PU052
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 15
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd08/04/2008:svnDellInc.:pnOptiPlex755:pvr:rvnDellInc.:rn0PU052:rvr:cvnDellInc.:ct15:cvr:
  dmi.product.name: OptiPlex 755
  dmi.sys.vendor: Dell Inc.

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