tree 99b924611fb7e310f49c63db0375b2cfcf2eefac
parent f7a6eb1e155d0760a6d62bc17cf665205d43e9b1
author Doron Roberts-Kedes <doronrk@fb.com> 1531956147 -0700
committer David S. Miller <davem@davemloft.net> 1532122694 -0700

tls: check RCV_SHUTDOWN in tls_wait_data

The current code does not check sk->sk_shutdown & RCV_SHUTDOWN.
tls_sw_recvmsg may return a positive value in the case where bytes have
already been copied when the socket is shutdown. sk->sk_err has been
cleared, causing the tls_wait_data to hang forever on a subsequent
invocation. Checking sk->sk_shutdown & RCV_SHUTDOWN, as in tcp_recvmsg,
fixes this problem.

Fixes: c46234ebb4d1 ("tls: RX path for ktls")
Acked-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>