X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=lib%2Fstackdepot.c;h=81c69c08d1d157189d253a0cbe2a2bbd82cff421;hb=82f2bc2fcc0160d6f82dd1ac64518ae0a4dd183f;hp=ed717dd08ff37216a7c90a531f23b2eac0e2be1a;hpb=6c9594bdd47412ebf74616593b9dcad67c4e9e00;p=linux-2.6-microblaze.git

diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index ed717dd08ff3..81c69c08d1d1 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -83,15 +83,19 @@ static bool init_stack_slab(void **prealloc)
 		return true;
 	if (stack_slabs[depot_index] == NULL) {
 		stack_slabs[depot_index] = *prealloc;
+		*prealloc = NULL;
 	} else {
-		stack_slabs[depot_index + 1] = *prealloc;
+		/* If this is the last depot slab, do not touch the next one. */
+		if (depot_index + 1 < STACK_ALLOC_MAX_SLABS) {
+			stack_slabs[depot_index + 1] = *prealloc;
+			*prealloc = NULL;
+		}
 		/*
 		 * This smp_store_release pairs with smp_load_acquire() from
 		 * |next_slab_inited| above and in stack_depot_save().
 		 */
 		smp_store_release(&next_slab_inited, 1);
 	}
-	*prealloc = NULL;
 	return true;
 }