The loop should terminate after the exchange happens, we shouldn't repeat the operation until the count hits zero. Fixes #10241.
@@ -781,8 +781,9 @@ int pthread_rwlock_unlock(pthread_rwlock_t* lockval_p)
--count;
auto desired = (current & 0xffff0000u) | count;
auto did_exchange = AK::atomic_compare_exchange_strong(lockp, current, desired, AK::MemoryOrder::memory_order_release);
- if (!did_exchange)
- continue; // tough luck, try again.
+ if (did_exchange)
+ break;
+ // tough luck, try again.
}
// Finally, unlocked at last!