[PATCH] smb: client: let smbd_disconnect_rdma_connection() turn CREATED into DISCONNECTED

[Stefan Metzmacher]

When smbd_disconnect_rdma_connection() turns SMBDIRECT_SOCKET_CREATED
into SMBDIRECT_SOCKET_ERROR, we'll have the situation that
smbd_disconnect_rdma_work() will set SMBDIRECT_SOCKET_DISCONNECTING
and call rdma_disconnect(), which likely fails as we never reached
the RDMA_CM_EVENT_ESTABLISHED. it means that
wait_event(sc->status_wait, sc->status == SMBDIRECT_SOCKET_DISCONNECTED)
in smbd_destroy() will hang forever in SMBDIRECT_SOCKET_DISCONNECTING
never reaching SMBDIRECT_SOCKET_DISCONNECTED.

So we directly go from SMBDIRECT_SOCKET_CREATED to
SMBDIRECT_SOCKET_DISCONNECTED.

Fixes: ffbfc73e84eb ("smb: client: let smbd_disconnect_rdma_connection() set SMBDIRECT_SOCKET_ERROR...")
Cc: Steve French <smfrench at gmail.com>
Cc: Tom Talpey <tom at talpey.com>
Cc: Long Li <longli at microsoft.com>
Cc: Namjae Jeon <linkinjeon at kernel.org>
Cc: linux-cifs at vger.kernel.org
Cc: samba-technical at lists.samba.org
Signed-off-by: Stefan Metzmacher <metze at samba.org>
---
 fs/smb/client/smbdirect.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/smb/client/smbdirect.c b/fs/smb/client/smbdirect.c
index 85a4c55b61b8..c6c428c2e08d 100644
--- a/fs/smb/client/smbdirect.c
+++ b/fs/smb/client/smbdirect.c
@@ -290,6 +290,9 @@ static void smbd_disconnect_rdma_connection(struct smbdirect_socket *sc)
 		break;
 
 	case SMBDIRECT_SOCKET_CREATED:
+		sc->status = SMBDIRECT_SOCKET_DISCONNECTED;
+		break;
+
 	case SMBDIRECT_SOCKET_CONNECTED:
 		sc->status = SMBDIRECT_SOCKET_ERROR;
 		break;
-- 
2.43.0