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[Viktor Szathmary <viktor@xxxxxxxxxx>]

I'm also experiencing this problem on an EC2 paravirtualized instance.

Based on the kernel changelog, it seems this bug was fixed in 3.13.5:

See https://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.13.5
(search for "Bad page map")

(I have not tested it though)

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https://bugs.launchpad.net/bugs/1308796

Title:
  Bad page map in openjdk-7

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  [ 2808.161850] BUG: Bad page map in process java  pte:00000320 pmd:e8048067
  [ 2808.161860] addr:00007f968a63a000 vm_flags:08000070 anon_vma:          (null) mapping:          (null) index:7f968a63a
  [ 2808.161866] CPU: 0 PID: 18543 Comm: java Tainted: G    B        3.13.0-24-generic #46-Ubuntu
  [ 2808.161868]  ffff8800e7f623c0 ffff8800e8277a98 ffffffff81715a64 00007f968a63a000
  [ 2808.161871]  ffff8800e8277ae0 ffffffff81174183 0000000000000320 00000007f968a63a
  [ 2808.161872]  ffff8800e80481d0 0000000000000320 00007f968a63a000 00007f968a63b000
  [ 2808.161874] Call Trace:
  [ 2808.161881]  [<ffffffff81715a64>] dump_stack+0x45/0x56
  [ 2808.161884]  [<ffffffff81174183>] print_bad_pte+0x1a3/0x250
  [ 2808.161886]  [<ffffffff81175439>] vm_normal_page+0x69/0x80
  [ 2808.161888]  [<ffffffff8117580b>] unmap_page_range+0x3bb/0x7f0
  [ 2808.161890]  [<ffffffff81175cc1>] unmap_single_vma+0x81/0xf0
  [ 2808.161892]  [<ffffffff81176d39>] unmap_vmas+0x49/0x90
  [ 2808.161894]  [<ffffffff8117feec>] exit_mmap+0x9c/0x170
  [ 2808.161898]  [<ffffffff8110fcf3>] ? __delayacct_add_tsk+0x153/0x170
  [ 2808.161901]  [<ffffffff8106482c>] mmput+0x5c/0x120
  [ 2808.161903]  [<ffffffff81069bbc>] do_exit+0x26c/0xa50
  [ 2808.161906]  [<ffffffff810d7591>] ? __unqueue_futex+0x31/0x60
  [ 2808.161907]  [<ffffffff810d83b6>] ? futex_wait+0x126/0x290
  [ 2808.161909]  [<ffffffff8106a41f>] do_group_exit+0x3f/0xa0
  [ 2808.161912]  [<ffffffff8107a050>] get_signal_to_deliver+0x1d0/0x6f0
  [ 2808.161916]  [<ffffffff81013448>] do_signal+0x48/0x960
  [ 2808.161919]  [<ffffffff8101b7d9>] ? sched_clock+0x9/0x10
  [ 2808.161921]  [<ffffffff8109d13d>] ? sched_clock_local+0x1d/0x80
  [ 2808.161924]  [<ffffffff811112fc>] ? acct_account_cputime+0x1c/0x20
  [ 2808.161925]  [<ffffffff8109d76b>] ? account_user_time+0x8b/0xa0
  [ 2808.161927]  [<ffffffff8109dd84>] ? vtime_account_user+0x54/0x60
  [ 2808.161929]  [<ffffffff81013dc9>] do_notify_resume+0x69/0xb0
  [ 2808.161932]  [<ffffffff817266ea>] int_signal+0x12/0x17

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Apr 16 22:18 seq
   crw-rw---- 1 root audio 116, 33 Apr 16 22:18 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  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: 'iw'
  Date: Thu Apr 17 00:06:35 2014
  Ec2AMI: ami-2ef19b1e
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-west-2a
  Ec2InstanceType: m3.medium
  Ec2Kernel: aki-fc8f11cc
  Ec2Ramdisk: unavailable
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lspci: Error: [Errno 2] No such file or directory: 'lspci'
  Lsusb: Error: [Errno 2] No such file or directory: 'lsusb'
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: root=UUID=ecdfe459-e35e-4416-a9c1-9ee71f9f93e7 ro
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             N/A
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Apr 17 17:56 seq
   crw-rw---- 1 root audio 116, 33 Apr 17 17:56 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3
  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
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  DistroRelease: Ubuntu 14.04
  Ec2AMI: ami-2ef19b1e
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-west-2a
  Ec2InstanceType: m3.medium
  Ec2Kernel: aki-fc8f11cc
  Ec2Ramdisk: unavailable
  IwConfig: Error: [Errno 2] No such file or directory
  Lspci: Error: [Errno 2] No such file or directory
  Lsusb: Error: [Errno 2] No such file or directory
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/zsh
  ProcFB:
   
  ProcKernelCmdLine: root=UUID=ecdfe459-e35e-4416-a9c1-9ee71f9f93e7 ro
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty ec2-images
  Uname: Linux 3.13.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  WifiSyslog:
   
  _MarkForUpload: True
  --- 
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  DistroRelease: Ubuntu 14.04
  Ec2AMI: ami-2ef19b1e
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-west-2a
  Ec2InstanceType: m3.medium
  Ec2Kernel: aki-fc8f11cc
  Ec2Ramdisk: unavailable
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Tags:  trusty ec2-images
  Uname: Linux 3.15.0-031500rc1-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video
  _MarkForUpload: True

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