Showing error 1409

User: Jiri Slaby
Error type: Leaving function in locked state
Error type description: Some lock is not unlocked on all paths of a function, so it is leaked
File location: kernel/sched.c
Line in file: 1004
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2012-05-21 20:30:05 UTC

Source: 

 974        struct rq *rq = task_rq(p);
 975
 976        smp_mb(); /* spin-unlock-wait is not a full memory barrier */
 977        spin_unlock_wait(&rq->lock);
 978}
 979
 980static void __task_rq_unlock(struct rq *rq)
 981        __releases(rq->lock)
 982{
 983        spin_unlock(&rq->lock);
 984}
 985
 986static inline void task_rq_unlock(struct rq *rq, unsigned long *flags)
 987        __releases(rq->lock)
 988{
 989        spin_unlock_irqrestore(&rq->lock, *flags);
 990}
 991
 992/*
 993 * this_rq_lock - lock this runqueue and disable interrupts.
 994 */
 995static struct rq *this_rq_lock(void)
 996        __acquires(rq->lock)
 997{
 998        struct rq *rq;
 999
1000        local_irq_disable();
1001        rq = this_rq();
1002        spin_lock(&rq->lock);
1003
1004        return rq;
1005}
1006
1007#ifdef CONFIG_SCHED_HRTICK
1008/*
1009 * Use HR-timers to deliver accurate preemption points.
1010 *
1011 * Its all a bit involved since we cannot program an hrt while holding the
1012 * rq->lock. So what we do is store a state in in rq->hrtick_* and ask for a
1013 * reschedule event.
1014 *
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