slub: Fix debugobjects with lockless fastpath

On Thu, 24 Mar 2011, Ingo Molnar wrote:
> RIP: 0010:[<ffffffff810570a9>]  [<ffffffff810570a9>] get_next_timer_interrupt+0x119/0x260

That's a typical timer crash, but you were unable to debug it with
debugobjects because commit d3f661d6 broke those.

Cc: Christoph Lameter <cl@linux.com>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/mm/slub.c b/mm/slub.c
index 93de30db95f5943037b1a37a9fae1e2578f06287..a6a783594ad44e4caf2ba7daafa16df15585fa48 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -849,11 +849,11 @@ static inline void slab_free_hook(struct kmem_cache *s, void *x)
                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
+       if (!(s->flags & SLAB_DEBUG_OBJECTS))
+               debug_check_no_obj_freed(x, s->objsize);
 }
 
 /*