From: Eric Dumazet <eduma...@google.com>
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 <da...@codemonkey.org.uk>
Signed-off-by: Eric Dumazet <eduma...@google.com>
---
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)) {
--
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