I ended up writing my own gettimeofday(1) loop program; unfortunately, I
was unable to get it to trigger the RTC problem on my single die quad-
core machine. I've attached the program so that others who saw this bug
can reproduce it for verification. I note that the original upstream
reporter claimed to have more success triggering the vsyscall version of
gettimeofday(1) (i.e. on amd64/x86_64).


** Attachment added: "gettimeofday-lp221351.c"
   http://launchpadlibrarian.net/17987640/gettimeofday-lp221351.c

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TSC Clocksource can cause hangs and time jumps
https://bugs.launchpad.net/bugs/221351
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