Showing error 1404

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: 5630
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2012-05-21 20:30:05 UTC

Source: 

5600 * This works OK both with and without CONFIG_PREEMPT. We do strange low-level
5601 * operations here to prevent schedule() from being called twice (once via
5602 * spin_unlock(), once by hand).
5603 */
5604int cond_resched_lock(spinlock_t *lock)
5605{
5606        int resched = need_resched() && system_state == SYSTEM_RUNNING;
5607        int ret = 0;
5608
5609        if (spin_needbreak(lock) || resched) {
5610                spin_unlock(lock);
5611                if (resched && need_resched())
5612                        __cond_resched();
5613                else
5614                        cpu_relax();
5615                ret = 1;
5616                spin_lock(lock);
5617        }
5618        return ret;
5619}
5620EXPORT_SYMBOL(cond_resched_lock);
5621
5622int __sched cond_resched_softirq(void)
5623{
5624        BUG_ON(!in_softirq());
5625
5626        if (need_resched() && system_state == SYSTEM_RUNNING) {
5627                local_bh_enable();
5628                __cond_resched();
5629                local_bh_disable();
5630                return 1;
5631        }
5632        return 0;
5633}
5634EXPORT_SYMBOL(cond_resched_softirq);
5635
5636/**
5637 * yield - yield the current processor to other threads.
5638 *
5639 * This is a shortcut for kernel-space yielding - it marks the
5640 * thread runnable and calls sys_sched_yield().
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