diff --git a/include/linux/time64.h b/include/linux/time64.h
index 5117cb5b56561878d10126cd2fbef4b65b46574b..96a062f144652dc285610a68c4a4ce911299c688 100644
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -4,6 +4,7 @@
 
 #include <linux/math64.h>
 #include <vdso/time64.h>
+#include <linux/printk.h>
 
 typedef __s64 time64_t;
 typedef __u64 timeu64_t;
@@ -86,6 +87,7 @@ static inline struct timespec64 timespec64_sub(struct timespec64 lhs,
  */
 static inline bool timespec64_valid(const struct timespec64 *ts)
 {
+	pr_err("[ywr_debug] FUNC: %s;Incoming data: %d\n",__func__,ts->tv_sec);
 	/* Dates before 1970 are bogus */
 	if (ts->tv_sec < 0)
 		return false;
@@ -107,9 +109,11 @@ static inline bool timespec64_valid_strict(const struct timespec64 *ts)
 
 static inline bool timespec64_valid_settod(const struct timespec64 *ts)
 {
+	pr_err("[ywr_debug] FUNC: %s;Incoming data: %d\n",__func__,ts->tv_sec);
 	if (!timespec64_valid(ts))
 		return false;
 	/* Disallow values which cause overflow issues vs. CLOCK_REALTIME */
+	pr_err("[ywr_debug] FUNC: %s;TIME_SETTOD_SEC_MAX: %d\n",__func__,TIME_SETTOD_SEC_MAX);
 	if ((unsigned long long)ts->tv_sec >= TIME_SETTOD_SEC_MAX)
 		return false;
 	return true;
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 3985b2b32d083e06acfee3c83f952426660dbe9d..6447b0a132b64b8b3f4621ad2582b7bfc5314eee 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -35,6 +35,7 @@
 #include <linux/fs.h>
 #include <linux/math64.h>
 #include <linux/ptrace.h>
+#include <linux/printk.h>
 
 #include <linux/uaccess.h>
 #include <linux/compat.h>
@@ -201,7 +202,7 @@ SYSCALL_DEFINE2(settimeofday, struct __kernel_old_timeval __user *, tv,
 {
 	struct timespec64 new_ts;
 	struct timezone new_tz;
-
+	pr_err("[ywr_debug] FUNC: %s;Incoming data: %d\n",__func__,tv->tv_sec);
 	if (tv) {
 		if (get_user(new_ts.tv_sec, &tv->tv_sec) ||
 		    get_user(new_ts.tv_nsec, &tv->tv_usec))
@@ -245,7 +246,7 @@ COMPAT_SYSCALL_DEFINE2(settimeofday, struct old_timeval32 __user *, tv,
 {
 	struct timespec64 new_ts;
 	struct timezone new_tz;
-
+	pr_err("[ywr_debug] FUNC: %s;Incoming data: %d\n",__func__,tv->tv_sec);
 	if (tv) {
 		if (get_user(new_ts.tv_sec, &tv->tv_sec) ||
 		    get_user(new_ts.tv_nsec, &tv->tv_usec))
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index d9b48f7a35e0dbcf48cb15be33f8875babf8594f..c61fb899d37cd521c0f6eee9a338e2a9f32fe9ea 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -24,6 +24,7 @@
 #include <linux/compiler.h>
 #include <linux/audit.h>
 #include <linux/random.h>
+#include <linux/printk.h>
 
 #include "tick-internal.h"
 #include "ntp_internal.h"
@@ -1302,7 +1303,7 @@ int do_settimeofday64(const struct timespec64 *ts)
 	struct timespec64 ts_delta, xt;
 	unsigned long flags;
 	int ret = 0;
-
+	pr_err("[ywr_debug] FUNC: %s;Incoming data: %d\n",__func__,ts->tv_sec);
 	if (!timespec64_valid_settod(ts))
 		return -EINVAL;