If the server sends CB_ calls on a connection that is not associated
with the backchannel, refuse to process the call and shut down the
connection. This avoids a NULL dereference crash in
xprt_complete_bc_request(). There's not much more we can do in this
situation unless we want to look into allowing all connections to be
associated with the fore and back channel.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
struct rpc_rqst *req;
ssize_t ret;
+ /* Is this transport associated with the backchannel? */
+ if (!xprt->bc_serv)
+ return -ESHUTDOWN;
+
/* Look up and lock the request corresponding to the given XID */
req = xprt_lookup_bc_request(xprt, transport->recv.xid);
if (!req) {