Message ID | 20200728221210.92841-12-mathew.j.martineau@linux.intel.com |
---|---|
State | Accepted |
Delegated to: | David Miller |
Headers | show |
Series | Exchange MPTCP DATA_FIN/DATA_ACK before TCP FIN | expand |
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index f264ea15e081..f2455a68d231 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1269,7 +1269,7 @@ static void mptcp_retransmit_handler(struct sock *sk) { struct mptcp_sock *msk = mptcp_sk(sk); - if (atomic64_read(&msk->snd_una) == msk->write_seq) { + if (atomic64_read(&msk->snd_una) == READ_ONCE(msk->write_seq)) { mptcp_stop_timer(sk); } else { set_bit(MPTCP_WORK_RTX, &msk->flags);
The MPTCP socket's write_seq member should be read with READ_ONCE() when the msk lock is not held. Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> --- net/mptcp/protocol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)