On Thu, 27 Mar 2003, Andrew Morton wrote:
> That longer Code: line is really handy.
>
> You died in schedule()->deactivate_task()->dequeue_task().
>
> static inline void dequeue_task(struct task_struct *p, prio_array_t *array)
> {
> array->nr_active--;
>
> `array' is zero.
>
> I'm going to Cc Ingo and run away. Ed uses preempt.
hm, this is an 'impossible' scenario from the scheduler code POV. Whenever
we deactivate a task, we remove it from the runqueue and set p->array to
NULL. Whenever we activate a task again, we set p->array to non-NULL. A
double-deactivate is not possible. I tried to reproduce it with various
scheduler workloads, but didnt succeed.
Mike, do you have a backtrace of the crash you saw?
Ingo
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This archive was generated by hypermail 2b29 : Mon Mar 31 2003 - 22:00:31 EST