[PATCH net v4 5/5] Revert "ipv6: Fix suspicious RCU usage warning in ip6mr"

From: Stefan Wiehler
Date: Fri Oct 11 2024 - 03:50:33 EST


This reverts commit b6dd5acde3f165e364881c36de942c5b252e2a27.

We should not suppress Lockdep-RCU splats when calling ip6mr_get_table()
without RCU or RTNL lock.

Signed-off-by: Stefan Wiehler <stefan.wiehler@xxxxxxxxx>
---
net/ipv6/ip6mr.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index a817b688473a..44e2b4d1ca23 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -105,8 +105,7 @@ static void ipmr_expire_process(struct timer_list *t);
#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
#define ip6mr_for_each_table(mrt, net) \
list_for_each_entry_rcu(mrt, &net->ipv6.mr6_tables, list, \
- lockdep_rtnl_is_held() || \
- list_empty(&net->ipv6.mr6_tables))
+ lockdep_rtnl_is_held())

static struct mr_table *ip6mr_mr_table_iter(struct net *net,
struct mr_table *mrt)
--
2.42.0