x86/smpboot: Init apic mapping before usage

[cascardo/linux.git] / mm / kmemleak.c

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index a5e453c..e5355a5 100644 (file)
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1453,8 +1453,11 @@ static void kmemleak_scan(void)
 
                read_lock(&tasklist_lock);
                do_each_thread(g, p) {
-                       scan_block(task_stack_page(p), task_stack_page(p) +
-                                  THREAD_SIZE, NULL);
+                       void *stack = try_get_task_stack(p);
+                       if (stack) {
+                               scan_block(stack, stack + THREAD_SIZE, NULL);
+                               put_task_stack(p);
+                       }
                } while_each_thread(g, p);
                read_unlock(&tasklist_lock);
        }