pINT: Drop the memory barriers

For our shadow task structs, we use locking instead.

For LKRG unload, we'd ideally ensure no hooks are still running when we
start deleting our data, but we currently achieve similar by freezing tasks
before we get here.

Memory barriers would achieve almost nothing for either.

Author: solardiz

src/modules/exploit_detection/p_exploit_detection.c

@@ -451,10 +451,7 @@ notrace void p_update_ed_process(struct p_ed_process *p_source, char p_stack) {
    /* Name */
    strncpy(p_source->p_ed_task.p_comm, p_task->comm, TASK_COMM_LEN);
    p_source->p_ed_task.p_comm[TASK_COMM_LEN] = 0;
-   /* Should be last here to propagate potential glitching */
-   wmb();
    rcu_read_unlock();
-
 }
 
 #ifdef P_LKRG_TASK_OFF_DEBUG
@@ -1918,8 +1915,6 @@ void p_exploit_detection_exit(void) {
       p_fh_it->uninstall();
    }
 
-   mb();
-
    /* Delete cache for ED wq validation */
    p_ed_wq_valid_cache_delete();
    /* Delete cache for ED CFI validation */