anchao commented on code in PR #18199:
URL: https://github.com/apache/nuttx/pull/18199#discussion_r2734871961
##########
sched/semaphore/sem_clockwait.c:
##########
@@ -137,14 +137,14 @@ int nxsem_clockwait(FAR sem_t *sem, clockid_t clockid,
ret = nxsem_wait(sem);
+ leave_critical_section(flags);
Review Comment:
```
T1 T2
nxsem_wait
|
leave_critical_section
|
-------------------------------------->nxsem_clockwait
|
wd_start
|
nxsem_wait
|
|<--------------------------------------
|
wd_cancel
```
I mean 2 tasks are contending for the same lock.
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