[PATCH rcu 01/10] rcu: Use hlist_nulls_next_rcu() in hlist_nulls_add_tail_rcu()

From: Paul E. McKenney
Date: Wed Jan 04 2023 - 19:23:27 EST


From: Zhao Mengmeng <zhaomengmeng@xxxxxxxxxx>

In commit 8dbd76e79a16 ("tcp/dccp: fix possible race
__inet_lookup_established()"), function hlist_nulls_add_tail_rcu() was
added back, but the local variable *last* is of type hlist_nulls_node,
so use hlist_nulls_next_rcu() instead of hlist_next_rcu().

Signed-off-by: Zhao Mengmeng <zhaomengmeng@xxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
include/linux/rculist_nulls.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h
index d8afdb8784c1c..ba4c00dd8005a 100644
--- a/include/linux/rculist_nulls.h
+++ b/include/linux/rculist_nulls.h
@@ -139,7 +139,7 @@ static inline void hlist_nulls_add_tail_rcu(struct hlist_nulls_node *n,
if (last) {
n->next = last->next;
n->pprev = &last->next;
- rcu_assign_pointer(hlist_next_rcu(last), n);
+ rcu_assign_pointer(hlist_nulls_next_rcu(last), n);
} else {
hlist_nulls_add_head_rcu(n, h);
}
--
2.31.1.189.g2e36527f23