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[Bug 1580776] Missing required logs.


This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1580776

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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  Kernel Oops - unable to handle kernel NULL pointer dereference at
  0000000000000002; IP is at  mmc_ioctl_cdrom_read_audio+0x212/0x3b0

Status in linux package in Ubuntu:

Bug description:
  While playing around with the CDROM API found in linux/cdrom.h I
  encountered a kernel oops when my program stalls.  My code can be
  found at https://github.com/bigdavedev/audiorip.

  My program simply examines the ToC and then begins reading the PCM
  data track-by-track.  I would expect it to complete without any major

  At first I assumed it was the CD, but after switching CDs several
  times I noticed that the oops happens at around frame 170925, reading
  CD_FRAMES (75) per ioctl.  At this point, the disc is spinning at full
  speed.  I have not yet tried reading fewer frames, nor have I tried
  setting the speed to something not max to see if I still receive a
  kernel oops.  This would not be problematic to try.

  I have attached the output from `ubuntu-bug linux` to this issue.

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