clockevents: warn once when program_event() is called with negative expiry
The hrtimer problem with large relative timeouts resulting in a negative expiry time went unnoticed as there is no check in the clockevents_program_event() code. Put a check there with a WARN_ONCE to avoid such problems in the future. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -78,6 +78,11 @@ int clockevents_program_event(struct clock_event_device *dev, ktime_t expires,
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unsigned long long clc;
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int64_t delta;
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if (unlikely(expires.tv64 < 0)) {
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WARN_ON_ONCE(1);
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return -ETIME;
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}
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delta = ktime_to_ns(ktime_sub(expires, now));
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if (delta <= 0)
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