5.10-stable review patch. If anyone has any objections, please let me know.
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From: Stefano Garzarella sgarzare@redhat.com
commit a24009bc9be60242651a21702609381b5092459e upstream.
Transport's release() and destruct() are called when de-assigning the vsock transport. These callbacks can touch some socket state like sock flags, sk_state, and peer_shutdown.
Since we are reassigning the socket to a new transport during vsock_connect(), let's reset these fields to have a clean state with the new transport.
Fixes: c0cfa2d8a788 ("vsock: add multi-transports support") Cc: stable@vger.kernel.org Signed-off-by: Stefano Garzarella sgarzare@redhat.com Reviewed-by: Luigi Leonardi leonardi@redhat.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/vmw_vsock/af_vsock.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -464,6 +464,15 @@ int vsock_assign_transport(struct vsock_ */ vsk->transport->release(vsk); vsock_deassign_transport(vsk); + + /* transport's release() and destruct() can touch some socket + * state, since we are reassigning the socket to a new transport + * during vsock_connect(), let's reset these fields to have a + * clean state. + */ + sock_reset_flag(sk, SOCK_DONE); + sk->sk_state = TCP_CLOSE; + vsk->peer_shutdown = 0; }
/* We increase the module refcnt to prevent the transport unloading