[Bug 1034340] [NEW] ARM coredumps zero-length on NFS mount

[Greg Law]

Public bug reported:

I'm using Ubuntu 1204 for ARM on a beagleboard.

When I generate a coredump when cwd is an nfs mount, the resutling
coredump has zero length. If I generate the same coredump on /tmp, I get
a valid coredump.

I can work around by setting corepattern to point all corefiles at /tmp,
but this is not ideal as my beagleboard has limited storage available
(hence the reason I'm using an NFS mount in the first place!)

Some details from the system:

gel at beagle1 ~ $ lsb_release 
No LSB modules are available.
gel at beagle1 ~ $ cat /etc/issue
Ubuntu 12.04 LTS \n \l

gel at beagle1 ~ $ uname -a
Linux beagle1 3.2.0-23-omap #36-Ubuntu Tue Apr 10 20:24:21 UTC 2012 armv7l armv7l armv7l GNU/Linux
gel at beagle1 ~ $

** Affects: nfs-utils (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1034340

Title:
  ARM coredumps zero-length on NFS mount

Status in “nfs-utils” package in Ubuntu:
  New

Bug description:
  I'm using Ubuntu 1204 for ARM on a beagleboard.

  When I generate a coredump when cwd is an nfs mount, the resutling
  coredump has zero length. If I generate the same coredump on /tmp, I
  get a valid coredump.

  I can work around by setting corepattern to point all corefiles at
  /tmp, but this is not ideal as my beagleboard has limited storage
  available (hence the reason I'm using an NFS mount in the first
  place!)

  Some details from the system:

  gel at beagle1 ~ $ lsb_release 
  No LSB modules are available.
  gel at beagle1 ~ $ cat /etc/issue
  Ubuntu 12.04 LTS \n \l

  gel at beagle1 ~ $ uname -a
  Linux beagle1 3.2.0-23-omap #36-Ubuntu Tue Apr 10 20:24:21 UTC 2012 armv7l armv7l armv7l GNU/Linux
  gel at beagle1 ~ $

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