[Bug 818529] Re: grub-mount assert failure: *** glibc detected *** grub-mount: free(): invalid next size (fast): 0x084c39f0 ***

[Apport retracing service]

*** This bug is a duplicate of bug 775377 ***
    https://bugs.launchpad.net/bugs/775377

Thank you for taking the time to report this crash and helping to make
Ubuntu better.  This particular crash has already been reported and is a
duplicate of bug #775377, so is being marked as such.  Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

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** This bug has been marked a duplicate of private bug 775377

** Visibility changed to: Public

** Tags removed: need-i386-retrace

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https://bugs.launchpad.net/bugs/818529

Title:
  grub-mount assert failure: *** glibc detected *** grub-mount: free():
  invalid next size (fast): 0x084c39f0 ***

Status in “grub2” package in Ubuntu:
  New

Bug description:
  I am sorry. I am poor at English. About a point, I  installed mac os
  10.7/Lion in my i mac computer. Mac os 10.6.8/snow leopard and ubuntu
  11.04 has already been installed in that computer. A problem occurred
  after that was installed. It is indicated with "Unknown filesystem
  grub rescue" at the time of the start. Therefore  it has just tried
  re-installation. It met this page,Launchpad.net. I am a real amateur.
  Please thank you for your cooperation though care is given.
  Incidentally as for bootloader. I  am using rEfIt.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.04
  Package: grub-common 1.99~rc1-13ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic i686
  Architecture: i386
  AssertionMessage: *** glibc detected *** grub-mount: free(): invalid next size (fast): 0x084c39f0 ***
  Date: Sat Jul 30 12:50:05 2011
  ExecutablePath: /usr/bin/grub-mount
  LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  ProcCmdline: grub-mount /dev/sda2 /var/lib/os-prober/mount
  ProcEnviron:
   LANGUAGE=ja_JP:en
   PATH=(custom, no user)
   LANG=ja_JP.UTF-8
   SHELL=/bin/bash
  Signal: 6
  SourcePackage: grub2
  StacktraceTop:
   __kernel_vsyscall ()
   raise () from /lib/i386-linux-gnu/libc.so.6
   abort () from /lib/i386-linux-gnu/libc.so.6
   ?? () from /lib/i386-linux-gnu/libc.so.6
   ?? () from /lib/i386-linux-gnu/libc.so.6
  Title: grub-mount assert failure: *** glibc detected *** grub-mount: free(): invalid next size (fast): 0x084c39f0 ***
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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