Re: [PATCH net v2 2/2] vsock: Set socket state back to SS_UNCONNECTED in vsock_connect_timeout()

From: Stefano Garzarella
Date: Mon Aug 08 2022 - 03:57:03 EST


On Sun, Aug 07, 2022 at 02:00:46AM -0700, Peilin Ye wrote:
From: Peilin Ye <peilin.ye@xxxxxxxxxxxxx>

Imagine two non-blocking vsock_connect() requests on the same socket.
The first request schedules @connect_work, and after it times out,
vsock_connect_timeout() sets *sock* state back to TCP_CLOSE, but keeps
*socket* state as SS_CONNECTING.

Later, the second request returns -EALREADY, meaning the socket "already
has a pending connection in progress", even if the first request has
already timed out.

As suggested by Stefano, fix it by setting *socket* state back to
SS_UNCONNECTED, so that the second request will return -ETIMEDOUT.

Suggested-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
Signed-off-by: Peilin Ye <peilin.ye@xxxxxxxxxxxxx>
---
(new patch in v2)

Thanks for sending this :-)

Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>