diff --git a/arch/arm/src/cxd56xx/cxd56_rtc.c b/arch/arm/src/cxd56xx/cxd56_rtc.c
index db33c24c32edc..9f9ca9db10af6 100644
--- a/arch/arm/src/cxd56xx/cxd56_rtc.c
+++ b/arch/arm/src/cxd56xx/cxd56_rtc.c
@@ -399,8 +399,11 @@ time_t up_rtc_time(void)
 #ifdef CONFIG_RTC_HIRES
 int up_rtc_gettime(struct timespec *tp)
 {
+  irqstate_t flags;
   uint64_t count;
 
+  flags = enter_critical_section();
+
   count = cxd56_rtc_count();
   count += g_rtc_save->offset;
 
@@ -410,6 +413,8 @@ int up_rtc_gettime(struct timespec *tp)
   tp->tv_nsec = (count % CONFIG_RTC_FREQUENCY) *
                 (NSEC_PER_SEC / CONFIG_RTC_FREQUENCY);
 
+  leave_critical_section(flags);
+
   rtc_dumptime(tp, "Getting time");
 
   return OK;
diff --git a/arch/arm/src/efm32/efm32_rtc_burtc.c b/arch/arm/src/efm32/efm32_rtc_burtc.c
index e1dc0a7165b1a..536d16fd315b6 100644
--- a/arch/arm/src/efm32/efm32_rtc_burtc.c
+++ b/arch/arm/src/efm32/efm32_rtc_burtc.c
@@ -421,8 +421,10 @@ time_t up_rtc_time(void)
 #ifdef CONFIG_RTC_HIRES
 int up_rtc_gettime(struct timespec *tp)
 {
+  irqstate_t flags;
   uint64_t val;
 
+  flags = enter_critical_section();
   val = efm32_get_burtc_tick();
 
   /* Then we can save the time in seconds and fractional seconds. */
@@ -431,6 +433,7 @@ int up_rtc_gettime(struct timespec *tp)
   tp->tv_nsec = (val % CONFIG_RTC_FREQUENCY) *
                 (NSEC_PER_SEC / CONFIG_RTC_FREQUENCY);
 
+  leave_critical_section(flags);
   rtcinfo("Get RTC %u.%09u\n", tp->tv_sec, tp->tv_nsec);
 
   return OK;
diff --git a/arch/arm/src/max326xx/max32660/max32660_rtc.c b/arch/arm/src/max326xx/max32660/max32660_rtc.c
index db37e63430072..4dc770e30f4e9 100644
--- a/arch/arm/src/max326xx/max32660/max32660_rtc.c
+++ b/arch/arm/src/max326xx/max32660/max32660_rtc.c
@@ -403,11 +403,14 @@ time_t up_rtc_time(void)
 #ifdef CONFIG_RTC_HIRES
 int up_rtc_gettime(struct timespec *tp)
 {
+  irqstate_t flags;
   uint64_t tmp;
   uint32_t sec;
   uint32_t ssec;
   uint32_t verify;
 
+  flags = enter_critical_section();
+
   /* Read the time handling rollover to full seconds */
 
   do
@@ -424,6 +427,7 @@ int up_rtc_gettime(struct timespec *tp)
 
   tp->tv_sec  = sec;
   tp->tv_nsec = (long)tmp;
+  leave_critical_section(flags);
 
   return OK;
 }
diff --git a/arch/arm/src/sam34/sam_rtc.c b/arch/arm/src/sam34/sam_rtc.c
index d6d60f0b1a8b7..9b39bf73083c7 100644
--- a/arch/arm/src/sam34/sam_rtc.c
+++ b/arch/arm/src/sam34/sam_rtc.c
@@ -759,11 +759,13 @@ int up_rtc_gettime(struct timespec *tp)
 {
   /* This is a hack to emulate a high resolution rtc using the rtt */
 
+  irqstate_t flags;
   uint32_t rtc_cal;
   uint32_t rtc_tim;
   uint32_t rtt_val;
   struct tm t;
 
+  flags = enter_critical_section();
   do
     {
       rtc_cal = getreg32(SAM_RTC_CALR);
@@ -794,6 +796,7 @@ int up_rtc_gettime(struct timespec *tp)
   tp->tv_nsec = (((rtt_val - g_rtt_offset) & (CONFIG_RTC_FREQUENCY - 1)) *
                    1000000000ull) / CONFIG_RTC_FREQUENCY;
 
+  leave_critical_section(flags);
   return OK;
 }
 #endif
diff --git a/arch/arm/src/stm32/stm32_eth.c b/arch/arm/src/stm32/stm32_eth.c
index 4aa2c5d1f1398..7f976d95e8fdb 100644
--- a/arch/arm/src/stm32/stm32_eth.c
+++ b/arch/arm/src/stm32/stm32_eth.c
@@ -4308,7 +4308,10 @@ int up_rtc_initialize(void)
 
 int up_rtc_gettime(struct timespec *tp)
 {
+  irqstate_t flags;
   uint64_t timestamp;
+
+  flags = enter_critical_section();
   timestamp = stm32_eth_ptp_gettime();
 
   if (timestamp == 0)
@@ -4318,11 +4321,13 @@ int up_rtc_gettime(struct timespec *tp)
        */
 
       DEBUGASSERT(!g_rtc_enabled);
+      leave_critical_section(flags);
       return -EBUSY;
     }
 
   ptp_to_timespec(timestamp, tp);
   clock_timespec_add(tp, &g_stm32_eth_ptp_basetime, tp);
+  leave_critical_section(flags);
 
   return OK;
 }
diff --git a/arch/renesas/src/rx65n/rx65n_rtc.c b/arch/renesas/src/rx65n/rx65n_rtc.c
index 5585fa3d60af6..05bfe07709eea 100644
--- a/arch/renesas/src/rx65n/rx65n_rtc.c
+++ b/arch/renesas/src/rx65n/rx65n_rtc.c
@@ -461,6 +461,7 @@ int up_rtc_initialize(void)
 #if defined(CONFIG_RTC_HIRES)
 int up_rtc_gettime(struct timespec *tp)
 {
+  irqstate_t flags;
   uint8_t weekcnt;
   uint8_t daycnt;
   uint8_t monthcnt;
@@ -476,6 +477,8 @@ int up_rtc_gettime(struct timespec *tp)
   uint8_t regval;
   struct tm t;
 
+  flags = enter_critical_section();
+
   if (RTC.RCR2.BIT.START == 0)
     {
           RTC.RCR2.BIT.START = 1;
@@ -541,6 +544,8 @@ int up_rtc_gettime(struct timespec *tp)
   UNUSED(hrcnt);
   UNUSED(mincnt);
   UNUSED(seccnt);
+
+  leave_critical_section(flags);
   return OK;
 }
 #endif
diff --git a/arch/x86_64/src/intel64/intel64_rtc.c b/arch/x86_64/src/intel64/intel64_rtc.c
index 6ed1da0080c0e..45df5fa949589 100644
--- a/arch/x86_64/src/intel64/intel64_rtc.c
+++ b/arch/x86_64/src/intel64/intel64_rtc.c
@@ -140,11 +140,14 @@ int up_rtc_initialize(void)
 
 int up_rtc_gettime(struct timespec *tp)
 {
+  irqstate_t flags;
   uint64_t tmp;
 
+  flags = enter_critical_section();
   tmp = rtc_read();
   tp->tv_sec  = (tmp / NS_PER_SEC);
   tp->tv_nsec = (tmp - (tp->tv_sec) * NS_PER_SEC);
+  leave_critical_section(flags);
 
   return OK;
 }