Sorry guys for the mistake,

quoted

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c75fd46506df..56a927393a38 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h

@@ -1083,7 +1083,7 @@ struct task_struct {
       *
       * - normally initialized setup_new_exec()
       * - access it with [gs]et_task_comm()
-      * - lock it with task_lock()
+      * - lock it with task_lock() for writing

there should be fixed only the comment about ->comm initialization during exec.

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c75fd46506df..48aa5c85ed9e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h

@@ -1081,9 +1081,9 @@ struct task_struct {
        /*
         * executable name, excluding path.
         *
-        * - normally initialized setup_new_exec()
+        * - normally initialized begin_new_exec()
         * - access it with [gs]et_task_comm()
-        * - lock it with task_lock()
+        * - lock it with task_lock() for writing
         */
        char                            comm[TASK_COMM_LEN];

Again, sorry for the noise. It's a very minor fix, but maybe even a small fix to the documentation can help increase the readability of the code.