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authorWolfram Sang <wsa@the-dreams.de>2018-10-11 23:07:30 +0200
committerWolfram Sang <wsa@the-dreams.de>2018-10-11 23:07:30 +0200
commit90fb814b6c025da45f71db1703cffe3fe87f575c (patch)
tree5fd739d407654df6f9d6e82900a45e027dd8b9f0 /net/ipv4/tcp_input.c
parentb30f2f65568f840e5ca522d98ba2ad73b8f59cde (diff)
parent0238df646e6224016a45505d2c111a24669ebe21 (diff)
Merge tag 'v4.19-rc7' into i2c/for-4.20
This is the 4.19-rc7 release
Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 4cf2f7bb2802..47e08c1b5bc3 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -6009,11 +6009,13 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb)
if (th->fin)
goto discard;
/* It is possible that we process SYN packets from backlog,
- * so we need to make sure to disable BH right there.
+ * so we need to make sure to disable BH and RCU right there.
*/
+ rcu_read_lock();
local_bh_disable();
acceptable = icsk->icsk_af_ops->conn_request(sk, skb) >= 0;
local_bh_enable();
+ rcu_read_unlock();
if (!acceptable)
return 1;