diff --git a/arch/arm/src/armv8-m/arm_assert.c b/arch/arm/src/armv8-m/arm_assert.c
index ac0b9b72151..bc6cb3a1d93 100644
--- a/arch/arm/src/armv8-m/arm_assert.c
+++ b/arch/arm/src/armv8-m/arm_assert.c
@@ -244,7 +244,7 @@ static void up_dumpstate(void)
    * stack?
    */
 
-  if (sp <= istackbase && sp > istackbase - istacksize)
+  if (sp < istackbase && sp > istackbase - istacksize)
     {
       /* Yes.. dump the interrupt stack */
 
diff --git a/arch/arm/src/armv8-m/arm_exception.S b/arch/arm/src/armv8-m/arm_exception.S
index c7dc5af6e09..9a3c434e0a9 100644
--- a/arch/arm/src/armv8-m/arm_exception.S
+++ b/arch/arm/src/armv8-m/arm_exception.S
@@ -67,7 +67,7 @@
    * no privileged task has run.
    */
 
-#  if defined(CONFIG_BUILD_PROTECTED) && CONFIG_ARCH_INTERRUPTSTACK < 4
+#  if defined(CONFIG_BUILD_PROTECTED) && CONFIG_ARCH_INTERRUPTSTACK < 8
 #    error Interrupt stack must be used with high priority interrupts in kernel mode
 #  endif
 
@@ -355,7 +355,7 @@ exception_common:
 	.bss
 	.global	g_intstackalloc
 	.global	g_intstackbase
-	.align	8
+	.balign	8
 g_intstackalloc:
 	.skip	((CONFIG_ARCH_INTERRUPTSTACK + 4) & ~7)
 g_intstackbase:
diff --git a/arch/arm/src/armv8-m/arm_lazyexception.S b/arch/arm/src/armv8-m/arm_lazyexception.S
index ade51c1adba..fe89b320633 100644
--- a/arch/arm/src/armv8-m/arm_lazyexception.S
+++ b/arch/arm/src/armv8-m/arm_lazyexception.S
@@ -50,7 +50,7 @@
    * nested interrupt, the interrupt stack if no privileged task has run.
    */
 
-#  if defined(CONFIG_BUILD_PROTECTED) && CONFIG_ARCH_INTERRUPTSTACK < 4
+#  if defined(CONFIG_BUILD_PROTECTED) && CONFIG_ARCH_INTERRUPTSTACK < 8
 #    error Interrupt stack must be used with high priority interrupts in kernel mode
 #  endif
 
@@ -373,7 +373,7 @@ exception_common:
 	.bss
 	.global	g_intstackalloc
 	.global	g_intstackbase
-	.align	8
+	.balign	8
 g_intstackalloc:
 	.skip	((CONFIG_ARCH_INTERRUPTSTACK + 4) & ~7)
 g_intstackbase: