anchao commented on code in PR #18199:
URL: https://github.com/apache/nuttx/pull/18199#discussion_r2749306280


##########
sched/semaphore/sem_clockwait.c:
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@@ -137,14 +137,14 @@ int nxsem_clockwait(FAR sem_t *sem, clockid_t clockid,
 
           ret = nxsem_wait(sem);
 
+          leave_critical_section(flags);

Review Comment:
   You should also take the point 3 into consideration: if a stale wd timer 
node is not deleted in a timely manner, all wd timer checks will iterate 
through the nodes that should have been deleted:
   
   <img width="1149" height="821" alt="image" 
src="https://github.com/user-attachments/assets/f85f2e1a-9912-4b8d-b8e4-1da56fd770a5";
 />
   
   



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