2020-11-20 03:36:58

by Zhang, Qiang

[permalink] [raw]
Subject: [PATCH v2] rcu: kasan: record and print kvfree_call_rcu call stack

From: Zqiang <[email protected]>

Add kasan_record_aux_stack function for kvfree_call_rcu function to
record call stacks.

Cc: Walter Wu <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: "Paul E. McKenney" <[email protected]>
Signed-off-by: Zqiang <[email protected]>
---
v1->v2:
Add Cc tags.

kernel/rcu/tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index da3414522285..a252b2f0208d 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3506,7 +3506,7 @@ void kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func)
success = true;
goto unlock_return;
}
-
+ kasan_record_aux_stack(ptr);
success = kvfree_call_rcu_add_ptr_to_bulk(krcp, ptr);
if (!success) {
run_page_cache_worker(krcp);
--
2.17.1