On Tue, Jun 26, 2018 at 6:21 AM, Thomas Gleixner <[email protected]> wrote:
> The posix timer ti_overrun handling is broken because the forwarding
> functions can return a huge number of overruns which does not fit in an
> int. As a consequence timer_getoverrun(2) and siginfo::si_overrun can turn
> into random number generators.
>
> As a first step to address that let the timer_forward() callbacks return
> the full 64 bit value.
>
> Cast it to (int) temporarily until k_itimer::ti_overrun is converted to
> 64bit and the conversion to user space visible values is sanitized.
>
> Reported-by: air icy <[email protected]>
> Signed-off-by: Thomas Gleixner <[email protected]>

Looks ok, and doesn't trip any regressions in testing so far.

Acked-by: John Stultz <[email protected]>

thanks
-john

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