Re: BUG on 3.0-rc on commitd72bce0e67e8afc6eb959f656013cbb577426f1e

[Steven Rostedt]

On Mon, 2011-06-13 at 19:05 -0500, Andrew Theurer wrote:

> > Could you try this patch?
> 
> Yes, and it works!  Thanks very much!

Could you try this patch instead? I don't like holding off migration for
the entire boot processes.

-- Steve

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 88725c9..4505bfb 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1239,6 +1239,10 @@ static int find_lowest_rq(struct task_struct *task)
 	int this_cpu = smp_processor_id();
 	int cpu      = task_cpu(task);
 
+	/* Make sure the mask is initialized first */
+	if (unlikely(!lowest_mask))
+		return -1;
+
 	if (task->rt.nr_cpus_allowed == 1)
 		return -1; /* No other targets possible */
 


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