From 69ce6487dcd364245a3d26322fc8f4ffd1e8d947 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 7 Dec 2015 08:25:21 -0800 Subject: [PATCH] ipv6: sctp: fix lockdep splat in sctp_v6_get_dst() While cooking the sctp np->opt rcu fixes, I forgot to move one rcu_read_unlock() after the added rcu_dereference() in sctp_v6_get_dst() This gave lockdep warnings reported by Dave Jones. Fixes: c836a8ba9386 ("ipv6: sctp: add rcu protection around np->opt") Reported-by: Dave Jones Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/sctp/ipv6.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index acb45b8c2a9d..d28c0b4c9128 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -323,14 +323,13 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr, } } } - rcu_read_unlock(); - if (baddr) { fl6->saddr = baddr->v6.sin6_addr; fl6->fl6_sport = baddr->v6.sin6_port; final_p = fl6_update_dst(fl6, rcu_dereference(np->opt), &final); dst = ip6_dst_lookup_flow(sk, fl6, final_p); } + rcu_read_unlock(); out: if (!IS_ERR_OR_NULL(dst)) { -- 2.30.2