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-rw-r--r--mm/slub.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/mm/slub.c b/mm/slub.c
index e15aa7f..bae7a5c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -807,14 +807,24 @@ static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags, void
static inline void slab_free_hook(struct kmem_cache *s, void *x)
{
kmemleak_free_recursive(x, s->flags);
-}
-static inline void slab_free_hook_irq(struct kmem_cache *s, void *object)
-{
- kmemcheck_slab_free(s, object, s->objsize);
- debug_check_no_locks_freed(object, s->objsize);
- if (!(s->flags & SLAB_DEBUG_OBJECTS))
- debug_check_no_obj_freed(object, s->objsize);
+ /*
+ * Trouble is that we may no longer disable interupts in the fast path
+ * So in order to make the debug calls that expect irqs to be
+ * disabled we need to disable interrupts temporarily.
+ */
+#if defined(CONFIG_KMEMCHECK) || defined(CONFIG_LOCKDEP)
+ {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ kmemcheck_slab_free(s, x, s->objsize);
+ debug_check_no_locks_freed(x, s->objsize);
+ if (!(s->flags & SLAB_DEBUG_OBJECTS))
+ debug_check_no_obj_freed(x, s->objsize);
+ local_irq_restore(flags);
+ }
+#endif
}
/*
@@ -1101,9 +1111,6 @@ static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags,
static inline void slab_free_hook(struct kmem_cache *s, void *x) {}
-static inline void slab_free_hook_irq(struct kmem_cache *s,
- void *object) {}
-
#endif /* CONFIG_SLUB_DEBUG */
/*
@@ -1909,8 +1916,6 @@ static __always_inline void slab_free(struct kmem_cache *s,
local_irq_save(flags);
c = __this_cpu_ptr(s->cpu_slab);
- slab_free_hook_irq(s, x);
-
if (likely(page == c->page && c->node != NUMA_NO_NODE)) {
set_freepointer(s, object, c->freelist);
c->freelist = object;
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