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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-08 15:40:42 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-08 15:40:42 +0200
commit8aff4eaa1de7a0ba70af8447ed08127ef0e8e45d (patch)
tree8fff0fab5c3ac5ba1774ce1706e8ec4f50ad0377 /net/ipv4/tcp_input.c
parente7a2c3fa28576684d744e259a2fdb245f8bab0d7 (diff)
parent0238df646e6224016a45505d2c111a24669ebe21 (diff)
downloadlinux-8aff4eaa1de7a0ba70af8447ed08127ef0e8e45d.tar.bz2
Merge 4.19-rc7 into usb-next
We want the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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;