diff options
Diffstat (limited to 'net/unix')
| -rw-r--r-- | net/unix/af_unix.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 55cdebfa0da0..a7ca74653d94 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -2904,6 +2904,7 @@ static int unix_stream_read_generic(struct unix_stream_read_state *state, unsigned int last_len; struct unix_sock *u; int copied = 0; + bool do_cmsg; int err = 0; long timeo; int target; @@ -2929,6 +2930,9 @@ static int unix_stream_read_generic(struct unix_stream_read_state *state, u = unix_sk(sk); + do_cmsg = READ_ONCE(u->recvmsg_inq); + if (do_cmsg) + msg->msg_get_inq = 1; redo: /* Lock the socket to prevent queue disordering * while sleeps in memcpy_tomsg @@ -3088,10 +3092,11 @@ unlock: if (msg) { scm_recv_unix(sock, msg, &scm, flags); - if (READ_ONCE(u->recvmsg_inq) || msg->msg_get_inq) { + if (msg->msg_get_inq && (copied ?: err) >= 0) { msg->msg_inq = READ_ONCE(u->inq_len); - put_cmsg(msg, SOL_SOCKET, SCM_INQ, - sizeof(msg->msg_inq), &msg->msg_inq); + if (do_cmsg) + put_cmsg(msg, SOL_SOCKET, SCM_INQ, + sizeof(msg->msg_inq), &msg->msg_inq); } } else { scm_destroy(&scm); |