This is a note to let you know that I've just added the patch titled
vsock: Set socket state back to SS_UNCONNECTED in vsock_connect_timeout()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
vsock-set-socket-state-back-to-ss_unconnected-in-vsock_connect_timeout.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a3e7b29e30854ed67be0d17687e744ad0c769c4b Mon Sep 17 00:00:00 2001
From: Peilin Ye <peilin.ye@xxxxxxxxxxxxx>
Date: Mon, 8 Aug 2022 11:05:25 -0700
Subject: vsock: Set socket state back to SS_UNCONNECTED in vsock_connect_timeout()
From: Peilin Ye <peilin.ye@xxxxxxxxxxxxx>
commit a3e7b29e30854ed67be0d17687e744ad0c769c4b upstream.
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 though 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")
Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
Signed-off-by: Peilin Ye <peilin.ye@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/vmw_vsock/af_vsock.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -1242,6 +1242,7 @@ static void vsock_connect_timeout(struct
if (sk->sk_state == TCP_SYN_SENT &&
(sk->sk_shutdown != SHUTDOWN_MASK)) {
sk->sk_state = TCP_CLOSE;
+ sk->sk_socket->state = SS_UNCONNECTED;
sk->sk_err = ETIMEDOUT;
sk->sk_error_report(sk);
vsock_transport_cancel_pkt(vsk);
Patches currently in stable-queue which might be from peilin.ye@xxxxxxxxxxxxx are
queue-5.10/vsock-fix-memory-leak-in-vsock_connect.patch
queue-5.10/vsock-set-socket-state-back-to-ss_unconnected-in-vsock_connect_timeout.patch
