linux-next build error (8)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit:    47780d78 Add linux-next specific files for 20200318
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14228745e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b68b7b89ad96c62a
dashboard link: https://syzkaller.appspot.com/bug?extid=792dec47d693ccdc05a0
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+792dec47d693ccdc05a0@xxxxxxxxxxxxxxxxxxxxxxxxx

kernel/rcu/tasks.h:1070:37: error: 'rcu_tasks_rude' undeclared (first use in this function); did you mean 'rcu_tasks_qs'?

---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxxx

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.