[GIT pull] timer fix for 4.13

[Thomas Gleixner]

Linus,

please pull the latest timers-urgent-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 
timers-urgent-for-linus

A single fix for a multiplication overflow in the timer code on 32bit
systems.

Thanks,

        tglx

------------------>
Matija Glavinic Pecotic (1):
      timers: Fix overflow in get_next_timer_interrupt


 kernel/time/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 71ce3f4eead3..8f5d1bf18854 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1495,7 +1495,7 @@ u64 get_next_timer_interrupt(unsigned long basej, u64 
basem)
                base->is_idle = false;
        } else {
                if (!is_max_delta)
-                       expires = basem + (nextevt - basej) * TICK_NSEC;
+                       expires = basem + (u64)(nextevt - basej) * TICK_NSEC;
                /*
                 * If we expect to sleep more than a tick, mark the base idle:
                 */