diff --git a/Documentation/reference/user/08_pthread.rst b/Documentation/reference/user/08_pthread.rst
index 77017cef04f..67208b5ca59 100644
--- a/Documentation/reference/user/08_pthread.rst
+++ b/Documentation/reference/user/08_pthread.rst
@@ -34,6 +34,8 @@ manage pthreads.
  - :c:func:`pthread_attr_getinheritsched`
  - :c:func:`pthread_attr_setstacksize`
  - :c:func:`pthread_attr_getstacksize`
+ - :c:func:`pthread_attr_setguardsize`
+ - :c:func:`pthread_attr_getguardsize`
  - :c:func:`pthread_create`
  - :c:func:`pthread_detach`
  - :c:func:`pthread_exit`
@@ -109,11 +111,7 @@ The main task thread does not have thread-specific data.
 
 No support for the following pthread interfaces is provided by NuttX:
 
-  -  ``pthread_attr_getguardsize``. get and set the thread guardsize
-     attribute.
   -  ``pthread_attr_getscope``. get and set the contentionscope attribute.
-  -  ``pthread_attr_setguardsize``. get and set the thread guardsize
-     attribute.
   -  ``pthread_attr_setscope``. get and set the contentionscope attribute.
   -  ``pthread_getconcurrency``. get and set the level of concurrency.
   -  ``pthread_getcpuclockid``. access a thread CPU-time clock.
@@ -328,6 +326,51 @@ No support for the following pthread interfaces is provided by NuttX:
   **POSIX Compatibility:** Comparable to the POSIX interface of the same
   name.
 
+.. c:function:: int pthread_attr_setguardsize(pthread_attr_t *attr, long guardsize);
+
+   Sets the thread guardsize attribute in the attr object. At this moment this
+   option simply increases the size of thread stacks.
+
+  **Input Parameters:**
+
+  -  attr - thread attributes to be modified
+  -  guardsize - guard size
+
+  **Returned Value:**
+
+  If successful, the ``pthread_attr_setguardsize()`` function will return
+  zero (``OK``). Otherwise, an error number will be returned to indicate
+  the error:
+
+  -  ``To be provided``.
+
+  **Assumptions/Limitations:**
+
+  **POSIX Compatibility:** Comparable to the POSIX interface of the same
+  name.
+
+.. c:function:: int pthread_attr_getguardsize(FAR const pthread_attr_t *attr, FAR size_t *stackaddr);
+
+ Gets the thread guardsize attributes from the attr object.
+
+  **Input Parameters:**
+
+  -  attr - thread attributes to be queried
+  -  guardsize - guard size pointer
+
+  **Returned Value:**
+
+  If successful, the ``pthread_attr_getguardsize()`` function will return
+  zero (``OK``). Otherwise, an error number will be returned to indicate
+  the error:
+
+  -  ``To be provided``.
+
+  **Assumptions/Limitations:**
+
+  **POSIX Compatibility:** Comparable to the POSIX interface of the same
+  name.
+
 .. c:function:: int pthread_create(pthread_t *thread, pthread_attr_t *attr, \
                           pthread_startroutine_t startRoutine, \
                           pthread_addr_t arg);
diff --git a/Documentation/standards/posix.rst b/Documentation/standards/posix.rst
index 35187b2b4d9..ebf9e34142e 100644
--- a/Documentation/standards/posix.rst
+++ b/Documentation/standards/posix.rst
@@ -32,7 +32,7 @@ Units of Functionality Requirements:
 +------------------------------+----------------+---------+
 | `POSIX_THREADS_BASE`_        | Yes            |         |
 +------------------------------+----------------+---------+
-| `POSIX_THREADS_EXT`_ [#fn2]_ | 2/4            |         |
+| `POSIX_THREADS_EXT`_ [#fn2]_ | Yes            |         |
 +------------------------------+----------------+---------+
 | `XSI_THREADS_EXT`_           | 2/4            |         |
 +------------------------------+----------------+---------+
@@ -754,17 +754,17 @@ POSIX_THREADS_EXT
 
 Extended Threads:
 
-+-------------------------------------+---------+
-| API                                 | Support |
-+=====================================+=========+
-| pthread_attr_getguardsize()         | No      |
-+-------------------------------------+---------+
-| pthread_attr_setguardsize()         | No      |
-+-------------------------------------+---------+
-| :c:func:`pthread_mutexattr_gettype` | Yes     |
-+-------------------------------------+---------+
-| :c:func:`pthread_mutexattr_settype` | Yes     |
-+-------------------------------------+---------+
++--------------------------------------+---------+
+| API                                  | Support |
++======================================+=========+
+| :c:func:`pthread_attr_getguardsize`  | Yes     |
++--------------------------------------+---------+
+| :c:func:`pthread_attr_setguardsize`  | Yes     |
++--------------------------------------+---------+
+| :c:func:`pthread_mutexattr_gettype`  | Yes     |
++--------------------------------------+---------+
+| :c:func:`pthread_mutexattr_settype`  | Yes     |
++--------------------------------------+---------+
 
 POSIX_C_LANG_MATH
 -----------------
diff --git a/include/nuttx/pthread.h b/include/nuttx/pthread.h
index 6a80835fc46..a2d7114e9fa 100644
--- a/include/nuttx/pthread.h
+++ b/include/nuttx/pthread.h
@@ -56,6 +56,7 @@
     0,                        /* affinity */ \
     NULL,                     /* stackaddr */ \
     PTHREAD_STACK_DEFAULT,    /* stacksize */ \
+    PTHREAD_GUARD_DEFAULT,    /* guardsize */ \
     {0, 0},                   /* repl_period */ \
     {0, 0}                    /* budget */ \
   }
@@ -70,6 +71,7 @@
     0,                        /* max_repl */ \
     NULL,                     /* stackaddr */ \
     PTHREAD_STACK_DEFAULT,    /* stacksize */ \
+    PTHREAD_GUARD_DEFAULT,    /* guardsize */   \
     {0, 0},                   /* repl_period */ \
     {0, 0},                   /* budget */ \
   }
@@ -83,6 +85,7 @@
     0,                        /* affinity */ \
     NULL,                     /* stackaddr */ \
     PTHREAD_STACK_DEFAULT,    /* stacksize */ \
+    PTHREAD_GUARD_DEFAULT,    /* guardsize */ \
   }
 #else
 #  define PTHREAD_ATTR_INITIALIZER \
@@ -93,6 +96,7 @@
     PTHREAD_CREATE_JOINABLE,  /* detachstate */ \
     NULL,                     /* stackaddr */ \
     PTHREAD_STACK_DEFAULT,    /* stacksize */ \
+    PTHREAD_GUARD_DEFAULT,    /* guardsize */ \
   }
 #endif
 
diff --git a/include/pthread.h b/include/pthread.h
index ef6a831af7d..56bb6aba055 100644
--- a/include/pthread.h
+++ b/include/pthread.h
@@ -107,6 +107,7 @@
 
 #define PTHREAD_STACK_MIN             CONFIG_PTHREAD_STACK_MIN
 #define PTHREAD_STACK_DEFAULT         CONFIG_PTHREAD_STACK_DEFAULT
+#define PTHREAD_GUARD_DEFAULT         CONFIG_PTHREAD_GUARDSIZE_DEFAULT
 
 /* Values for the pthread inheritsched attribute */
 
@@ -237,6 +238,7 @@ struct pthread_attr_s
 
   FAR void  *stackaddr;        /* Address of memory to be used as stack */
   size_t stacksize;            /* Size of the stack allocated for the pthread */
+  size_t guardsize;            /* Size of the guard area for the pthread's stack */
 
 #ifdef CONFIG_SCHED_SPORADIC
   struct timespec repl_period; /* Replenishment period */
@@ -529,6 +531,12 @@ int pthread_attr_getstack(FAR const pthread_attr_t *attr,
 int pthread_attr_setscope(FAR pthread_attr_t *attr, int scope);
 int pthread_attr_getscope(FAR const pthread_attr_t *attr, FAR int *scope);
 
+/* Set/get guardsize attribute in thread attributes object */
+
+int pthread_attr_setguardsize(FAR pthread_attr_t *attr, size_t guardsize);
+int pthread_attr_getguardsize(FAR const pthread_attr_t *attr,
+                              FAR size_t *guardsize);
+
 /* Set or get the name of a thread */
 
 int pthread_setname_np(pthread_t thread, FAR const char *name);
diff --git a/libs/libc/pthread/CMakeLists.txt b/libs/libc/pthread/CMakeLists.txt
index fd46897e701..61ef6158cac 100644
--- a/libs/libc/pthread/CMakeLists.txt
+++ b/libs/libc/pthread/CMakeLists.txt
@@ -51,6 +51,8 @@ if(NOT CONFIG_DISABLE_PTHREAD)
     pthread_attr_getschedparam.c
     pthread_attr_setscope.c
     pthread_attr_getscope.c
+    pthread_attr_setguardsize.c
+    pthread_attr_getguardsize.c
     pthread_barrierattr_init.c
     pthread_barrierattr_destroy.c
     pthread_barrierattr_getpshared.c
diff --git a/libs/libc/pthread/Make.defs b/libs/libc/pthread/Make.defs
index 69c6ce4f4a4..581fcc50a55 100644
--- a/libs/libc/pthread/Make.defs
+++ b/libs/libc/pthread/Make.defs
@@ -38,6 +38,7 @@ CSRCS += pthread_attr_setstacksize.c pthread_attr_getstacksize.c
 CSRCS += pthread_attr_setstack.c pthread_attr_getstack.c
 CSRCS += pthread_attr_setschedparam.c pthread_attr_getschedparam.c
 CSRCS += pthread_attr_setscope.c pthread_attr_getscope.c
+CSRCS += pthread_attr_setguardsize.c pthread_attr_getguardsize.c
 CSRCS += pthread_barrierattr_init.c pthread_barrierattr_destroy.c
 CSRCS += pthread_barrierattr_getpshared.c pthread_barrierattr_setpshared.c
 CSRCS += pthread_barrierinit.c pthread_barrierdestroy.c pthread_barrierwait.c
diff --git a/libs/libc/pthread/pthread_attr_getguardsize.c b/libs/libc/pthread/pthread_attr_getguardsize.c
new file mode 100644
index 00000000000..d7381ed1298
--- /dev/null
+++ b/libs/libc/pthread/pthread_attr_getguardsize.c
@@ -0,0 +1,67 @@
+/****************************************************************************
+ * libs/libc/pthread/pthread_attr_getguardsize.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <pthread.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: pthread_attr_getguardsize
+ *
+ * Description:
+ *   The pthread_attr_getstack() function shall get the thread guardsize
+ *   attributes from the attr object.
+ *
+ * Input Parameters:
+ *   attr      - thread attributes to be queried.
+ *   guardsize - guard size pointer
+ *
+ * Returned Value:
+ *   0 if successful.  Otherwise, an error code.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int pthread_attr_getguardsize(FAR const pthread_attr_t *attr,
+                              FAR size_t *guardsize)
+{
+  int ret;
+
+  if (!guardsize)
+    {
+      ret = EINVAL;
+    }
+  else
+    {
+      *guardsize = attr->guardsize;
+      ret = OK;
+    }
+
+  return ret;
+}
diff --git a/libs/libc/pthread/pthread_attr_setguardsize.c b/libs/libc/pthread/pthread_attr_setguardsize.c
new file mode 100644
index 00000000000..2686146cc5f
--- /dev/null
+++ b/libs/libc/pthread/pthread_attr_setguardsize.c
@@ -0,0 +1,66 @@
+/****************************************************************************
+ * libs/libc/pthread/pthread_attr_setguardsize.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <pthread.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: pthread_attr_setguardsize
+ *
+ * Description:
+ *   The pthread_attr_setstack() function shall set the thread guardsize
+ *   attribute in the attr object.
+ *
+ * Parameters:
+ *   attr      - thread attributes to be modified.
+ *   guardsize - guard size
+ *
+ * Return Value:
+ *   0 if successful.  Otherwise, an error code.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int pthread_attr_setguardsize(FAR pthread_attr_t *attr, size_t guardsize)
+{
+  int ret;
+
+  if (!attr)
+    {
+      ret = EINVAL;
+    }
+  else
+    {
+      attr->guardsize = guardsize;
+      ret = OK;
+    }
+
+  return ret;
+}
diff --git a/sched/Kconfig b/sched/Kconfig
index 81f226c1cef..1d5c88f16a1 100644
--- a/sched/Kconfig
+++ b/sched/Kconfig
@@ -1960,6 +1960,14 @@ config PTHREAD_STACK_DEFAULT
 	---help---
 		Default pthread stack size
 
+config PTHREAD_GUARDSIZE_DEFAULT
+	int "Default pthread guard area size"
+	default 0
+	---help---
+		This is the default amount of space to reserve at the overflow end of a
+		pthread stack. At this moment this option simply increases the size
+		of thread stacks.
+
 endmenu # Stack and heap information
 
 config SCHED_BACKTRACE
diff --git a/sched/pthread/pthread_create.c b/sched/pthread/pthread_create.c
index 227266cba76..142b6df5286 100644
--- a/sched/pthread/pthread_create.c
+++ b/sched/pthread/pthread_create.c
@@ -259,7 +259,8 @@ int nx_pthread_create(pthread_trampoline_t trampoline, FAR pthread_t *thread,
     {
       /* Allocate the stack for the TCB */
 
-      ret = up_create_stack((FAR struct tcb_s *)ptcb, attr->stacksize,
+      ret = up_create_stack((FAR struct tcb_s *)ptcb,
+                            attr->stacksize + attr->guardsize,
                             TCB_FLAG_TTYPE_PTHREAD);
     }