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[Launchpad Bug Tracker <1477842@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

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

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https://bugs.launchpad.net/bugs/1477842

Title:
  BUG: unable to handle kernel NULL pointer dereference

Status in linux package in Ubuntu:
  Expired

Bug description:
  Here is the kernel crashed log:

  [255440.341468] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
  [255440.341524] IP: [<ffffffff810775e8>] __next_timer_interrupt+0xd8/0x170
  [255440.341556] PGD 466cfc067 PUD 468420067 PMD 0 
  [255440.341581] Oops: 0000 [#1] SMP 
  [255440.341598] Modules linked in: netconsole configfs iptable_filter iptable_nat nf_nat_ipv4 xt_addrtype ip_tables x_tables nf_nat bridge stp llc aufs veth openvswitch vxlan ip_tunnel gre libcrc32c nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ast ttm mei_me drm_kms_helper mei drm sysimgblt sysfillrect gpio_ich syscopyarea shpchp sb_edac joydev edac_core wmi mac_hid lpc_ich ipmi_si bonding lp parport ses enclosure hid_generic usbhid hid igb dca isci i2c_algo_bit mpt2sas libsas ptp ahci libahci scsi_transport_sas raid_class pps_core
  [255440.341880] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G        W     3.13.0-57-generic #95~precise1-Ubuntu
  [255440.341908] Hardware name: Inspur NF5270M3/NF5270M3, BIOS CHEETAH_2.1.6 02/24/2014
  [255440.341932] task: ffff880869a3b000 ti: ffff880469ed8000 task.ti: ffff880469ed8000
  [255440.341956] RIP: 0010:[<ffffffff810775e8>]  [<ffffffff810775e8>] __next_timer_interrupt+0xd8/0x170
  [255440.341987] RSP: 0018:ffff880469ed9d68  EFLAGS: 00010082
  [255440.342005] RAX: 0000000000000000 RBX: 000000000103ccee RCX: 0000000000000000
  [255440.342028] RDX: 0000000000000000 RSI: ffff880869b59308 RDI: 000000000000002e
  [255440.342049] RBP: ffff880469ed9d98 R08: 0000000000000001 R09: 000000000000002e
  [255440.342070] R10: ffff880869b59028 R11: 0000000000000000 R12: 0000000000000040
  [255440.342092] R13: 0000000143ccedfb R14: ffff880869b58000 R15: 0000000007e7081e
  [255440.342114] FS:  0000000000000000(0000) GS:ffff88087fc00000(0000) knlGS:0000000000000000
  [255440.342137] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [255440.342157] CR2: 0000000000000018 CR3: 0000000036946000 CR4: 00000000001407e0
  [255440.342178] Stack:
  [255440.342187]  ffff880869b59028 ffff880869b59428 ffff880869b59828 ffff880869b59c28
  [255440.342221]  0000000103ccedfc 0000000103ccedfc ffff880469ed9de8 ffffffff8107a272
  [255440.342884]  ffff880469ed9e08 ffffffff8101359a ffff880469ed9de8 ffff8802757f4ce8
  [255440.343525] Call Trace:
  [255440.344159]  [<ffffffff8107a272>] get_next_timer_interrupt+0xa2/0x130
  [255440.344796]  [<ffffffff8101359a>] ? __switch_to+0xea/0x4e0
  [255440.345419]  [<ffffffff810dcccd>] tick_nohz_stop_sched_tick+0x1fd/0x360
  [255440.346070]  [<ffffffff810a365e>] ? post_schedule_idle+0xe/0x10
  [255440.346710]  [<ffffffff810dceba>] __tick_nohz_idle_enter+0x8a/0xc0
  [255440.347357]  [<ffffffff810dd13d>] tick_nohz_idle_enter+0x3d/0x70
  [255440.348003]  [<ffffffff810c4056>] cpu_idle_loop+0x36/0x270
  [255440.348654]  [<ffffffff810d9c62>] ? clockevents_register_device+0xe2/0x140
  [255440.349306]  [<ffffffff810c42fb>] cpu_startup_entry+0x6b/0x70
  [255440.349955]  [<ffffffff8104485d>] start_secondary+0xcd/0xd0
  [255440.350598] Code: 7d e8 48 89 55 e0 41 89 d9 41 83 e1 3f 44 89 cf 0f 1f 00 48 63 f7 48 c1 e6 04 4c 01 d6 48 8b 16 48 39 f2 74 25 66 0f 1f 44 00 00 <f6> 42 18 01 75 11 48 8b 4a 10 41 b8 01 00 00 00 48 39 c1 48 0f 
  [255440.352114] RIP  [<ffffffff810775e8>] __next_timer_interrupt+0xd8/0x170
  [255440.352811]  RSP <ffff880469ed9d68>
  [255440.353499] CR2: 0000000000000018

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.13.0-57-generic 3.13.0-57.95~precise1
  ProcVersionSignature: Ubuntu 3.13.0-57.95~precise1-generic 3.13.11-ckt21
  Uname: Linux 3.13.0-57-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Fri Jul 24 13:49:19 2015
  InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-lts-trusty
  UpgradeStatus: No upgrade log present (probably fresh install)

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