[rtems commit] rtems: Check entry point in rtems_task_start()

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    b87d2a6364ecc9f11572eac1bb557336b5f3736d
Changeset: http://git.rtems.org/rtems/commit/?id=b87d2a6364ecc9f11572eac1bb557336b5f3736d

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Fri May 14 09:14:11 2021 +0200

rtems: Check entry point in rtems_task_start()

Close #4410.

---

 cpukit/rtems/src/taskstart.c            | 4 ++++
 testsuites/sptests/sptask_err04/task1.c | 9 +++++++++
 2 files changed, 13 insertions(+)

diff --git a/cpukit/rtems/src/taskstart.c b/cpukit/rtems/src/taskstart.c
index eca9b57..57dbfc8 100644
--- a/cpukit/rtems/src/taskstart.c
+++ b/cpukit/rtems/src/taskstart.c
@@ -43,6 +43,10 @@ rtems_status_code rtems_task_start(
   ISR_lock_Context  lock_context;
   Status_Control    status;
 
+  if ( entry_point == NULL ) {
+    return RTEMS_INVALID_ADDRESS;
+  }
+
   the_thread = _Thread_Get( id, &lock_context );
 
   if ( the_thread == NULL ) {
diff --git a/testsuites/sptests/sptask_err04/task1.c b/testsuites/sptests/sptask_err04/task1.c
index 29b63db..c1f59d8 100644
--- a/testsuites/sptests/sptask_err04/task1.c
+++ b/testsuites/sptests/sptask_err04/task1.c
@@ -165,6 +165,15 @@ rtems_task Task_1(
   );
   puts( "TA1 - rtems_task_start - RTEMS_INVALID_ID" );
 
+  /* NULL entry point */
+  status = rtems_task_start( RTEMS_SELF, NULL, 0 );
+  fatal_directive_status(
+    status,
+    RTEMS_INVALID_ADDRESS,
+    "rtems_task_start with NULL entry point"
+  );
+  puts( "TA1 - rtems_task_start - RTEMS_INVALID_ADDRESS" );
+
   /* already started */
   status = rtems_task_start( RTEMS_SELF, Task_1, 0 );
   fatal_directive_status(