lockd: Do not start the lockd thread before we've set nlmsvc_rqst->rq_task
This fixes an Oopsable race when starting lockd.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index b416b33..09857b4 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -306,7 +306,7 @@
svc_sock_update_bufs(serv);
serv->sv_maxconn = nlm_max_connections;
- nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, "%s", serv->sv_name);
+ nlmsvc_task = kthread_create(lockd, nlmsvc_rqst, "%s", serv->sv_name);
if (IS_ERR(nlmsvc_task)) {
error = PTR_ERR(nlmsvc_task);
printk(KERN_WARNING
@@ -314,6 +314,7 @@
goto out_task;
}
nlmsvc_rqst->rq_task = nlmsvc_task;
+ wake_up_process(nlmsvc_task);
dprintk("lockd_up: service started\n");
return 0;