SLUB slab validation: Alloc while interrupts are disabled must use GFP_ATOMIC

The data structure to manage the information gathered about functions
allocating and freeing objects is allocated when the list_lock has already
been taken.  We need to allocate with GFP_ATOMIC instead of GFP_KERNEL.
Signed-off-by: NChristoph Lameter <clameter@sgi.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/slub.c

@@ -2867,7 +2867,7 @@ static int alloc_loc_track(struct loc_track *t, unsigned long max)
 
 	order = get_order(sizeof(struct location) * max);
 
-	l = (void *)__get_free_pages(GFP_KERNEL, order);
+	l = (void *)__get_free_pages(GFP_ATOMIC, order);
 
 	if (!l)
 		return 0;