From 1c45394c35bbea3a1664048fc938967f381797ba Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 14 May 2014 10:02:04 +1000 Subject: [PATCH] mm/mempool.c: update the kmemleak stack trace for mempool allocations When mempool_alloc() returns an existing pool object, kmemleak_alloc() is no longer called and the stack trace corresponds to the original object allocation. This patch updates the kmemleak allocation stack trace for such objects to make it more useful for debugging. Signed-off-by: Catalin Marinas Signed-off-by: Andrew Morton --- mm/mempool.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/mempool.c b/mm/mempool.c index 455d468c3a5d..e209c98c7203 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -222,6 +223,11 @@ repeat_alloc: spin_unlock_irqrestore(&pool->lock, flags); /* paired with rmb in mempool_free(), read comment there */ smp_wmb(); + /* + * Update the allocation stack trace as this is more useful + * for debugging. + */ + kmemleak_update_trace(element); return element; } -- 2.39.5