Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=167b1de3ee4e50d65a2bd0a2667c9cd48faf54f3
Commit: 167b1de3ee4e50d65a2bd0a2667c9cd48faf54f3
Parent: 62f0f61e6673e67151a7c8c0f9a09c7ea43fe2b5
Author: Thomas Gleixner <[EMAIL PROTECTED]>
AuthorDate: Fri Dec 7 19:16:17 2007 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Fri Dec 7 19:16:17 2007 +0100
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 <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
kernel/time/clockevents.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 822beeb..5fb139f 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -78,6 +78,11 @@ int clockevents_program_event(struct clock_event_device
*dev, ktime_t expires,
unsigned long long clc;
int64_t delta;
+ if (unlikely(expires.tv64 < 0)) {
+ WARN_ON_ONCE(1);
+ return -ETIME;
+ }
+
delta = ktime_to_ns(ktime_sub(expires, now));
if (delta <= 0)
-
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