procfs in linux 3.7.1: OOPS in do_task_stat in fs/proc/array.c

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Hi-

   Feel free to forward this report to anyone who is actually in charge
   of procfs (I couldn't find a maintainer listed).

   After a recent software upgrade, my machine has become prone to
   oopses, such as the one attached. It can run for hours or a day
   without them, but once they start they keep happening and a hard
   reboot is required. The one attached was the first in a series (I'm
   following the Sherlock Holmes principle that the first one is the
   most useful for debugging what's wrong). They all seem to involve
   the same kernel code being called from potentially different
   userspace programs. Usually the system becomes unusable before
   anything can be properly written to /var/log/sys.log; I was lucky
   this last time, thus enabling me to send this (I hope useful) report.

   Please let me know if there's other info you need about my setup to
   debug this.

                       Thanks,

                       Andrew Warshall
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Attachment: oops.log
Description: Binary data


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