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SubjectRe: [3.6-rc1] sched: clock counts too quickly
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Hello.

Bisected to 2a8c0883 "time: Move xtime_nsec adjustment underflow handling
timekeeping_adjust".

Would you check?

Regards.

Tetsuo Handa wrote:
> Tetsuo Handa wrote:
> > > Under unknown condition, clock starts counting up too quickly which is enough
> > > to confuse hangcheck timer to print stall warning.
> > I wrote a test program.
>
> I suspected that this is a problem within adjtimex() because strace reported clock
> jump at adjtimex(). But I've just hit this problem with settimeofday() alone.
>
> ---------- test program 2 start ----------
> #include <sys/timex.h>
>
> int main(int argc, char *argv[])
> {
> while (1) {
> struct timeval tv;
> struct timezone tz;
> gettimeofday(&tv, &tz);
> settimeofday(&tv, &tz);
> }
> return 0;
> }
> ---------- test program 2 end ----------
>
> Regards.


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