diff --git a/configs/esp32-core/README.txt b/configs/esp32-core/README.txt
index 84c90a6369a..02841e07be2 100644
--- a/configs/esp32-core/README.txt
+++ b/configs/esp32-core/README.txt
@@ -204,7 +204,7 @@ SMP
       CONFIG_SPINLOCK=y
       CONFIG_SMP=y
       CONFIG_SMP_NCPUS=2
-      CONFIG_SMP_IDLETHREAD_STACKSIZE=2048
+      CONFIG_SMP_IDLETHREAD_STACKSIZE=3072
 
   Debug Tip:  During debug session, OpenOCD may mysteriously switch from one
   CPU to another.  This behavior can be eliminated by uncommenting one of the
@@ -677,7 +677,7 @@ NOTES:
     SMP is enabled:
 
       CONFIG_SMP=y
-      CONFIG_SMP_IDLETHREAD_STACKSIZE=2048
+      CONFIG_SMP_IDLETHREAD_STACKSIZE=3072
       CONFIG_SMP_NCPUS=2
       CONFIG_SPINLOCK=y
 
diff --git a/configs/esp32-core/ostest/defconfig b/configs/esp32-core/ostest/defconfig
index 78ad88d94a1..4dfe49cf9ed 100644
--- a/configs/esp32-core/ostest/defconfig
+++ b/configs/esp32-core/ostest/defconfig
@@ -278,7 +278,7 @@ CONFIG_MQ_MAXMSGSIZE=32
 #
 # Stack and heap information
 #
-CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_IDLETHREAD_STACKSIZE=3072
 CONFIG_USERMAIN_STACKSIZE=2048
 CONFIG_PTHREAD_STACK_MIN=256
 CONFIG_PTHREAD_STACK_DEFAULT=2048
@@ -612,7 +612,7 @@ CONFIG_BUILTIN_PROXY_STACKSIZE=1024
 # CONFIG_EXAMPLES_NXTEXT is not set
 CONFIG_EXAMPLES_OSTEST=y
 CONFIG_EXAMPLES_OSTEST_LOOPS=10
-CONFIG_EXAMPLES_OSTEST_STACKSIZE=4096
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=6114
 CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=8
 CONFIG_EXAMPLES_OSTEST_RR_RANGE=10000
 CONFIG_EXAMPLES_OSTEST_RR_RUNS=10