rcutorture: Check for rcu_torture_fqs creation errors

The return value from torture_create_kthread() is currently ignored
when creating the rcu_torture_fqs kthread.  This commit therefore
captures the return value so that it can be tested for errors.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 693a90fcee83..dfec2582899f 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1577,7 +1577,8 @@ rcu_torture_init(void)
                 fqs_duration = 0;
         if (fqs_duration) {
                 /* Create the fqs thread */
-                torture_create_kthread(rcu_torture_fqs, NULL, fqs_task);
+                firsterr = torture_create_kthread(rcu_torture_fqs, NULL,
+                                                  fqs_task);
                 if (firsterr)
                         goto unwind;
         }