Merge commit 'v2.6.37-rc6' into sched/core

[firefly-linux-kernel-4.4.55.git] / kernel / sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index e9ad4448982860af9919df53c3368156a4bf2445..2745dcdb6c6c5756a7bafd19e6497c31cc077d60 100644 (file)
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -931,6 +931,7 @@ SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid)
                pgid = pid;
        if (pgid < 0)
                return -EINVAL;
+       rcu_read_lock();
 
        /* From this point forward we keep holding onto the tasklist lock
         * so that our parent does not change from under us. -DaveM
@@ -984,6 +985,7 @@ SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid)
 out:
        /* All paths lead to here, thus we are safe. -DaveM */
        write_unlock_irq(&tasklist_lock);
+       rcu_read_unlock();
        return err;
 }
 
@@ -1078,8 +1080,10 @@ SYSCALL_DEFINE0(setsid)
        err = session;
 out:
        write_unlock_irq(&tasklist_lock);
-       if (err > 0)
+       if (err > 0) {
                proc_sid_connector(group_leader);
+               sched_autogroup_create_attach(group_leader);
+       }
        return err;
 }