set_track_prepare() will call __alloc_pages() which attempt to acquire
zone->lock(spinlocks), so move it outside object->lock(raw_spinlocks)
because it's not right to acquire spinlocks while holding raw_spinlocks
in RT mode.
Signed-off-by: Liu Shixin <liushixin2@xxxxxxxxxx>
---
mm/kmemleak.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 22bab3738a9e..5501363d6b31 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1152,6 +1152,7 @@ EXPORT_SYMBOL_GPL(kmemleak_free_percpu);
void __ref kmemleak_update_trace(const void *ptr)
{
struct kmemleak_object *object;
+ depot_stack_handle_t trace_handle;
unsigned long flags;
pr_debug("%s(0x%px)\n", __func__, ptr);
@@ -1168,8 +1169,9 @@ void __ref kmemleak_update_trace(const void *ptr)
return;
}
+ trace_handle = set_track_prepare();
raw_spin_lock_irqsave(&object->lock, flags);
- object->trace_handle = set_track_prepare();
+ object->trace_handle = trace_handle;
raw_spin_unlock_irqrestore(&object->lock, flags);
put_object(object);
--
2.25.1
