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[Bug 1465322] Re: regression: "df: `/sys/kernel/debug': Function not implemented" with 3.2.0-85.122

 

I built two more test kernels.  One has commit df438af reverted and the
other has df438af reverted.  Can you test each of these kernels and see
which one resolves the bug?  The kernels can be downloaded from:

http://kernel.ubuntu.com/~jsalisbury/lp1465322/df438af-reverted
and
http://kernel.ubuntu.com/~jsalisbury/lp1465322/7b0f287-reverted

Thanks in advance!

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https://bugs.launchpad.net/bugs/1465322

Title:
  regression: "df: `/sys/kernel/debug': Function not implemented" with
  3.2.0-85.122

Status in linux package in Ubuntu:
  In Progress

Bug description:
  $ cat /proc/version_signature
  Ubuntu 3.2.0-84.121-generic 3.2.68

  $ df | head -3
  Filesystem     1K-blocks    Used Available Use% Mounted on
  /dev/vda1        7481832 4262872   2838904  61% /
  udev              371920       4    371916   1% /dev

  $ cat /proc/version_signature
  Ubuntu 3.2.0-85.122-generic 3.2.69

  $ df | head -3
  df: `/sys/kernel/debug': Function not implemented
  Filesystem     1K-blocks    Used Available Use% Mounted on
  /dev/vda1        7481832 4263012   2838764  61% /
  udev              371920       4    371916   1% /dev

  This is confirmed in an amd64 VM and on an amd64 system. It doesn't
  make a difference if I use sudo.

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References