diff --git a/tools/ci/check_ldgen_mapping_exceptions.txt b/tools/ci/check_ldgen_mapping_exceptions.txt
index eebfb1cd7c..a473dd04c4 100644
--- a/tools/ci/check_ldgen_mapping_exceptions.txt
+++ b/tools/ci/check_ldgen_mapping_exceptions.txt
@@ -1,3 +1,7 @@
 libc
 sha256_coredump
 gcc
+freertos_idf
+freertos_smp
+freertos_common
+esp_ringbuf
diff --git a/tools/test_apps/system/build_test/sdkconfig.ci.func_in_flash_with_Os b/tools/test_apps/system/build_test/sdkconfig.ci.func_in_flash_with_Os
new file mode 100644
index 0000000000..a8af29c111
--- /dev/null
+++ b/tools/test_apps/system/build_test/sdkconfig.ci.func_in_flash_with_Os
@@ -0,0 +1,4 @@
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
+CONFIG_RINGBUF_PLACE_FUNCTIONS_INTO_FLASH=y
+CONFIG_RINGBUF_PLACE_ISR_FUNCTIONS_INTO_FLASH=y