Comment 1 for bug 710319

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Scott Moser (smoser) wrote :

I'm fairly sure that the bug that was reported here is due to a kernel bug where utime can decrease.

I've verified the test program shown in that thread reproduces on my lucid system:
  $ dpkg -S /boot/vmlinuz-$(uname -r)
  linux-image-2.6.32-24-server: /boot/vmlinuz-2.6.32-24-server
  $ dpkg-query --show linux-image-2.6.32-24-server
  linux-image-2.6.32-24-server 2.6.32-24.43

A single test on my natty system with 2.6.38-1-generic did not reproduce.

Source code review indicates both natty and lucid kernels have [1] applied.

One way or another this is almost certainly a kernel bug, as mod_status just reads kernel tms.