kernel-packages team mailing list archive

[triden <1313450@xxxxxxxxxxxxxxxxxx>]

The problem can occur with any application as stated by Boris Ostrovsky

------------
"This can be easily triggered by Linux' page-types
(tools/vm/page-types.c) after save/restore.

All it does is it walks the page tables (in fs/proc/task_mmu.c) and
eventually trips on bad page. For example:

# /page-types -p 2273 -L> /tmp/new
[ 2634.501440] pfn 0x159f75 highest_memmap_pfn=0x3ffff
[ 2634.502345] BUG: Bad page map in process page-types pte:159f75420
pmd:3178a067
"
Which means that any application should be able to trigger this depending
on whether 'mprotect' was doing its stuff and migration happend.

Please note that these guests have no NUMA information exposed at all. 
------[Ref: http://www.gossamer-threads.com/lists/xen/devel/322227?page=last ]------

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https://bugs.launchpad.net/bugs/1313450

Title:
  Unable to start vsftpd on Ubuntu 14.04 (Amazon/EC2 or Xen) with
  default configuration

Status in “linux” package in Ubuntu:
  Confirmed
Status in “vsftpd” package in Ubuntu:
  Invalid
Status in “linux” source package in Trusty:
  Confirmed
Status in “vsftpd” source package in Trusty:
  Invalid

Bug description:
  The configuration submitted was modified during testing, but this also
  failed with the default configuration. The only solution I have found
  so far was to delete the configuration, this would allow the service
  to start, but obviously not work as intended.

  If I try to start the service manually using vsftpd or sudo vsftpd I receive the following error message:
  500 OOPS: munmap

  I also tried the default commands
  /etc/init.d/vsftpd or service vsftpd start

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: vsftpd 3.0.2-1ubuntu2
  ProcVersionSignature: User Name 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  Date: Sun Apr 27 21:23:18 2014
  Ec2AMI: ami-896c96fe
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: eu-west-1b
  Ec2InstanceType: t1.micro
  Ec2Kernel: aki-52a34525
  Ec2Ramdisk: unavailable
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: vsftpd
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.vsftpd.conf: [modified]
  mtime.conffile..etc.vsftpd.conf: 2014-04-27T21:16:28.222467
  --- 
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  DistroRelease: Ubuntu 14.04
  Ec2AMI: ami-896c96fe
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: eu-west-1b
  Ec2InstanceType: t1.micro
  Ec2Kernel: aki-52a34525
  Ec2Ramdisk: unavailable
  Package: vsftpd 3.0.2-1ubuntu2
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: User Name 3.13.0-24.46-generic 3.13.9
  Tags:  trusty ec2-images
  Uname: Linux 3.13.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video
  _MarkForUpload: True
  modified.conffile..etc.vsftpd.conf: [modified]
  mtime.conffile..etc.vsftpd.conf: 2014-04-29T19:03:28.834467

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