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-rw-r--r--mm/slab_common.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index f8833d3e5d47..a4a571428c51 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -318,6 +318,16 @@ kmem_cache_create_usercopy(const char *name,
const char *cache_name;
int err;
+#ifdef CONFIG_SLUB_DEBUG
+ /*
+ * If no slub_debug was enabled globally, the static key is not yet
+ * enabled by setup_slub_debug(). Enable it if the cache is being
+ * created with any of the debugging flags passed explicitly.
+ */
+ if (flags & SLAB_DEBUG_FLAGS)
+ static_branch_enable(&slub_debug_enabled);
+#endif
+
mutex_lock(&slab_mutex);
err = kmem_cache_sanity_check(name, size);