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There are two tcbs has state=RUNNING,how could it happen?

bruce yu

MDK:MDK-ARM-V2.50, CPU:STR71x.

I found one task A is hangging for ever(blocked waiting for a mutex named i2cMutex) but its tcb has the state=RUNNING and i2cMutex can be now used by other tasks. So at any moment,there are two tasks(one is A) have the state=RUNNING! It's really weard. Who knows why?