Assertions: Identify the running task correctly when dumping task state information. It takes time to switch to the target task after g_readytorun has been modified. If panic/assert happen during this period, the dump will contain the incorrect and confusing information due to the difference between the real running task and the return value of this_task(). This change resolve this problem by adding g_running_task to track the real running task through the context switch.

arch/arm/src/arm/up_assert.c

@@ -190,7 +190,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp   = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -310,7 +310,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || this_task()->pid == 0)
+  if (CURRENT_REGS || running_task()->pid == 0)
     {
       (void)up_irq_save();
       for (; ; )
@@ -346,7 +346,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -370,7 +370,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/arm/src/armv6-m/up_assert.c

@@ -227,7 +227,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -367,7 +367,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || this_task()->pid == 0)
+  if (CURRENT_REGS || running_task()->pid == 0)
     {
       (void)up_irq_save();
       for (; ; )
@@ -403,7 +403,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -427,7 +427,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/arm/src/armv7-a/arm_assert.c

@@ -228,7 +228,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp   = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -395,7 +395,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || this_task()->pid == 0)
+  if (CURRENT_REGS || running_task()->pid == 0)
     {
       /* Disable interrupts on this CPU */
 
@@ -442,7 +442,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -476,7 +476,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/arm/src/armv7-m/up_assert.c

@@ -235,7 +235,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -389,7 +389,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || (this_task())->pid == 0)
+  if (CURRENT_REGS || (running_task())->pid == 0)
     {
       (void)up_irq_save();
       for (; ; )
@@ -431,7 +431,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -465,7 +465,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/arm/src/armv7-r/arm_assert.c

@@ -224,7 +224,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp   = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -374,7 +374,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || (this_task())->pid == 0)
+  if (CURRENT_REGS || (running_task())->pid == 0)
     {
       (void)up_irq_save();
       for (; ; )
@@ -410,7 +410,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -434,7 +434,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/avr/src/avr/up_dumpstate.c

@@ -160,7 +160,7 @@ static inline void up_registerdump(void)
 
 void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint16_t sp = up_getsp();
   uint16_t ustackbase;
   uint16_t ustacksize;

arch/avr/src/avr32/up_dumpstate.c

@@ -126,7 +126,7 @@ static inline void up_registerdump(void)
 
 void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;

arch/avr/src/common/up_assert.c

@@ -87,7 +87,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || this_task()->pid == 0)
+  if (g_current_regs || running_task()->pid == 0)
     {
       (void)up_irq_save();
       for (; ; )
@@ -148,7 +148,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -172,7 +172,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
 #ifdef CONFIG_ARCH_USBDUMP

arch/hc/src/m9s12/m9s12_assert.c

@@ -184,7 +184,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint16_t sp = up_getsp();
   uint16_t ustackbase;
   uint16_t ustacksize;
@@ -294,7 +294,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || (this_task())->pid == 0)
+  if (g_current_regs || (running_task())->pid == 0)
     {
        (void)up_irq_save();
         for (;;)
@@ -330,7 +330,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -354,7 +354,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/mips/src/mips32/up_assert.c

@@ -86,7 +86,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || this_task()->pid == 0)
+  if (g_current_regs || running_task()->pid == 0)
     {
        (void)up_irq_save();
         for (; ; )
@@ -147,7 +147,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -177,7 +177,7 @@ void up_assert(const uint8_t *filename, int lineno)
 #endif
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/mips/src/mips32/up_dumpstate.c

@@ -139,7 +139,7 @@ static inline void up_registerdump(void)
 
 void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;

arch/misoc/src/lm32/lm32_assert.c

@@ -87,7 +87,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || this_task()->pid == 0)
+  if (g_current_regs || running_task()->pid == 0)
     {
        (void)up_irq_save();
         for (; ; )
@@ -148,7 +148,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -178,7 +178,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/misoc/src/lm32/lm32_dumpstate.c

@@ -135,7 +135,7 @@ static inline void up_registerdump(void)
 
 void lm32_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;

arch/or1k/src/common/up_assert.c

@@ -232,7 +232,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -372,7 +372,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || this_task()->pid == 0)
+  if (CURRENT_REGS || running_task()->pid == 0)
     {
       (void)up_irq_save();
       for (; ; )
@@ -408,7 +408,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -432,7 +432,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/renesas/src/common/up_assert.c

@@ -88,7 +88,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || this_task()->pid == 0)
+  if (g_current_regs || running_task()->pid == 0)
     {
        (void)up_irq_save();
         for (;;)
@@ -149,7 +149,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -179,7 +179,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/renesas/src/m16c/m16c_dumpstate.c

@@ -151,7 +151,7 @@ static inline void m16c_registerdump(void)
 
 void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint16_t sp = m16c_getsp();
   uint16_t ustackbase;
   uint16_t ustacksize;

arch/renesas/src/sh1/sh1_dumpstate.c

@@ -141,7 +141,7 @@ static inline void sh1_registerdump(void)
 
 void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = sh1_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;

arch/risc-v/src/rv32im/up_assert.c

@@ -87,7 +87,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || this_task()->pid == 0)
+  if (g_current_regs || running_task()->pid == 0)
     {
        (void)up_irq_save();
         for (; ; )
@@ -148,7 +148,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -178,7 +178,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/risc-v/src/rv32im/up_dumpstate.c

@@ -144,7 +144,7 @@ static inline void up_registerdump(void)
 
 void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;

arch/x86/src/common/up_assert.c

@@ -135,7 +135,7 @@ static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 #ifdef CONFIG_ARCH_STACKDUMP
 static void up_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = up_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;
@@ -255,7 +255,7 @@ static void _up_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (g_current_regs || (this_task())->pid == 0)
+  if (g_current_regs || (running_task())->pid == 0)
     {
        (void)up_irq_save();
         for (;;)
@@ -291,7 +291,7 @@ static void _up_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -315,7 +315,7 @@ void up_assert(const uint8_t *filename, int lineno)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/xtensa/src/common/xtensa_assert.c

@@ -117,7 +117,7 @@ static void xtensa_assert(int errorcode)
 #ifdef CONFIG_BOARD_CRASHDUMP
   /* Perform board-specific crash dump */
 
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   /* Flush any buffered SYSLOG data (from the above) */
@@ -126,7 +126,7 @@ static void xtensa_assert(int errorcode)
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (CURRENT_REGS || this_task()->pid == 0)
+  if (CURRENT_REGS || running_task()->pid == 0)
     {
        /* Blink the LEDs forever */
 
@@ -166,7 +166,7 @@ static void xtensa_assert(int errorcode)
 void up_assert(const uint8_t *filename, int lineno)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -211,7 +211,7 @@ void up_assert(const uint8_t *filename, int lineno)
 void xtensa_panic(int xptcode, uint32_t *regs)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   /* We get here when a un-dispatch-able, irrecoverable exception occurs */
@@ -315,7 +315,7 @@ void xtensa_panic(int xptcode, uint32_t *regs)
 void xtensa_user(int exccause, uint32_t *regs)
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   /* We get here when a un-dispatch-able, irrecoverable exception occurs */

arch/xtensa/src/common/xtensa_dumpstate.c

@@ -193,7 +193,7 @@ static inline void xtensa_registerdump(void)
 
 void xtensa_dumpstate(void)
 {
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
   uint32_t sp = xtensa_getsp();
   uint32_t ustackbase;
   uint32_t ustacksize;

arch/z16/src/common/up_assert.c

@@ -87,7 +87,7 @@ static void _up_assert(int errorcode) /* noreturn_function */
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (up_interrupt_context() || this_task()->pid == 0)
+  if (up_interrupt_context() || running_task()->pid == 0)
     {
        (void)up_irq_save();
         for (;;)
@@ -152,7 +152,7 @@ void up_assert(void)
 #endif
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -191,7 +191,7 @@ void up_assert(void)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

arch/z80/src/common/up_assert.c

@@ -86,7 +86,7 @@ static void _up_assert(int errorcode) /* noreturn_function */
 
   /* Are we in an interrupt handler or the idle task? */
 
-  if (up_interrupt_context() || this_task()->pid == 0)
+  if (up_interrupt_context() || running_task()->pid == 0)
     {
        (void)up_irq_save();
         for (;;)
@@ -151,7 +151,7 @@ void up_assert(void)
 #endif
 {
 #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG_ALERT)
-  struct tcb_s *rtcb = this_task();
+  struct tcb_s *rtcb = running_task();
 #endif
 
   board_autoled_on(LED_ASSERTION);
@@ -190,7 +190,7 @@ void up_assert(void)
   (void)syslog_flush();
 
 #ifdef CONFIG_BOARD_CRASHDUMP
-  board_crashdump(up_getsp(), this_task(), filename, lineno);
+  board_crashdump(up_getsp(), running_task(), filename, lineno);
 #endif
 
   _up_assert(EXIT_FAILURE);

sched/init/os_start.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * sched/init/os_start.c
  *
- *   Copyright (C) 2007-2014, 2016 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007-2014, 2016, 2018 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -140,6 +140,17 @@ volatile dq_queue_t g_readytorun;
  */
 
 volatile dq_queue_t g_assignedtasks[CONFIG_SMP_NCPUS];
+
+/* g_running_tasks[] holds a references to the running task for each cpu.
+ * It is valid only when up_interrupt_context() returns true.
+ */
+
+FAR struct tcb_s *g_running_tasks[CONFIG_SMP_NCPUS];
+
+#else
+
+FAR struct tcb_s *g_running_tasks[1];
+
 #endif
 
 /* This is the list of all tasks that are ready-to-run, but cannot be placed
@@ -546,6 +557,10 @@ void os_start(void)
 #endif
       dq_addfirst((FAR dq_entry_t *)&g_idletcb[cpu], tasklist);
 
+      /* Mark the idle task as the running task */
+
+      g_running_tasks[cpu] = &g_idletcb[cpu].cmn;
+
       /* Initialize the processor-specific portion of the TCB */
 
       up_initial_state(&g_idletcb[cpu].cmn);

sched/irq/irq_dispatch.c

@@ -46,6 +46,7 @@
 
 #include "irq/irq.h"
 #include "clock/clock.h"
+#include "sched/sched.h"
 
 /****************************************************************************
  * Pre-processor Definitions
@@ -159,4 +160,10 @@ void irq_dispatch(int irq, FAR void *context)
 
   CALL_VECTOR(ndx, vector, irq, context, arg);
   UNUSED(ndx);
+
+  /* Record the new "running" task.  g_running_tasks[] is only used by
+   * assertion logic for reporting crashes.
+   */
+
+  g_running_tasks[this_cpu()] = this_task();
 }

sched/sched/sched.h

@@ -89,6 +89,13 @@
 #  define this_task()            (current_task(this_cpu()))
 #endif
 
+/* This macro returns the running task which may different from this_task()
+ * during interrupt level context switches.
+ */
+
+#define running_task() \
+  (up_interrupt_context() ? g_running_tasks[this_cpu()] : this_task())
+
 /* List attribute flags */
 
 #define TLIST_ATTR_PRIORITIZED   (1 << 0) /* Bit 0: List is prioritized */
@@ -201,6 +208,17 @@ extern volatile dq_queue_t g_readytorun;
  */
 
 extern volatile dq_queue_t g_assignedtasks[CONFIG_SMP_NCPUS];
+
+/* g_running_tasks[] holds a references to the running task for each cpu.
+ * It is valid only when up_interrupt_context() returns true.
+ */
+
+extern FAR struct tcb_s *g_running_tasks[CONFIG_SMP_NCPUS];
+
+#else
+
+extern FAR struct tcb_s *g_running_tasks[1];
+
 #endif
 
 /* This is the list of all tasks that are ready-to-run, but cannot be placed