linux-kernel - [PATCH] rcu: kasan: record and print kvfree_call

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Date:   Wed, 18 Nov 2020 11:53:09 +0800
From:   qiang.zhang@...driver.com
To:     paulmck@...nel.org, josh@...htriplett.org, rostedt@...dmis.org
Cc:     joel@...lfernandes.org, rcu@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] rcu: kasan: record and print kvfree_call_rcu call stack

From: Zqiang <qiang.zhang@...driver.com>

Add kasan_record_aux_stack function for kvfree_call_rcu function to
record call stacks.

Signed-off-by: Zqiang <qiang.zhang@...driver.com>
---
 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