VMCI: Fix process-to-process DRGAMs.

When sending between processes, we always schedule a work item.  Our work info
struct has the message embedded in the middle, which means that we end up
overwriting subsequent fields when we copy the (variable-length) message into
it.  Move it to the end of the struct.

Acked-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Andy King <acking@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/vmw_vmci/vmci_datagram.c b/drivers/misc/vmw_vmci/vmci_datagram.c
index ed5c433cd4936f8b52c98352bbf21ead11a67ae8..f3cdd904fe4d6e1ae5c48288858d793dbc0af22c 100644 (file)
--- a/drivers/misc/vmw_vmci/vmci_datagram.c
+++ b/drivers/misc/vmw_vmci/vmci_datagram.c
@@ -42,9 +42,11 @@ struct datagram_entry {
 
 struct delayed_datagram_info {
        struct datagram_entry *entry;
-       struct vmci_datagram msg;
        struct work_struct work;
        bool in_dg_host_queue;
+       /* msg and msg_payload must be together. */
+       struct vmci_datagram msg;
+       u8 msg_payload[];
 };
 
 /* Number of in-flight host->host datagrams */