Index: kern/kern_timeout.c
===================================================================
RCS file: /cvs/src/sys/kern/kern_timeout.c,v
diff -u -p -r1.97 kern_timeout.c
--- kern/kern_timeout.c	23 Feb 2024 16:51:39 -0000	1.97
+++ kern/kern_timeout.c	5 Aug 2024 06:53:36 -0000
@@ -386,14 +386,17 @@ timeout_add_usec(struct timeout *to, int
 }
 
 int
-timeout_add_nsec(struct timeout *to, int nsecs)
+timeout_add_nsec(struct timeout *to, uint64_t nsecs)
 {
-	int to_ticks = nsecs / (tick * 1000);
+	uint64_t to_ticks;
 
+	to_ticks = nsecs / (tick * 1000);
+	if (to_ticks > INT_MAX)
+	    to_ticks = INT_MAX;
 	if (to_ticks == 0 && nsecs > 0)
 		to_ticks = 1;
 
-	return timeout_add(to, to_ticks);
+	return timeout_add(to, (int)to_ticks);
 }
 
 int
Index: sys/timeout.h
===================================================================
RCS file: /cvs/src/sys/sys/timeout.h,v
diff -u -p -r1.48 timeout.h
--- sys/timeout.h	12 Oct 2023 15:32:38 -0000	1.48
+++ sys/timeout.h	5 Aug 2024 06:53:36 -0000
@@ -110,7 +110,7 @@ int timeout_add_tv(struct timeout *, con
 int timeout_add_sec(struct timeout *, int);
 int timeout_add_msec(struct timeout *, int);
 int timeout_add_usec(struct timeout *, int);
-int timeout_add_nsec(struct timeout *, int);
+int timeout_add_nsec(struct timeout *, uint64_t);
 
 int timeout_abs_ts(struct timeout *, const struct timespec *);