1 files changed, 8 insertions, 0 deletions

diff --git a/mm/slab.c b/mm/slab.c
index 8b71a9c3daa4..21b2aef25254 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2990,6 +2990,14 @@ retry:
                 slabp = list_entry(entry, struct slab, list);
                 check_slabp(cachep, slabp);
                 check_spinlock_acquired(cachep);
+
+                /*
+                 * The slab was either on partial or free list so
+                 * there must be at least one object available for
+                 * allocation.
+                 */
+                BUG_ON(slabp->inuse < 0 || slabp->inuse >= cachep->num);
+
                 while (slabp->inuse < cachep->num && batchcount--) {
                         STATS_INC_ALLOCED(cachep);
                         STATS_INC_ACTIVE(cachep);