1 files changed, 9 insertions, 0 deletions

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 0e9263f6fd09..ea5e1a928d5b 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -481,6 +481,15 @@ static int alarm_timer_set(struct k_itimer *timr, int flags,
         if (!rtcdev)
                 return -ENOTSUPP;
 
+        /*
+         * XXX HACK! Currently we can DOS a system if the interval
+         * period on alarmtimers is too small. Cap the interval here
+         * to 100us and solve this properly in a future patch! -jstultz
+         */
+        if ((new_setting->it_interval.tv_sec == 0) &&
+                        (new_setting->it_interval.tv_nsec < 100000))
+                new_setting->it_interval.tv_nsec = 100000;
+
         if (old_setting)
                 alarm_timer_get(timr, old_setting);