Re: WARNING: bad unlock balance in rcu_lock_release

[syzbot]

syzbot suspects this bug was fixed by commit:

commit 10476e6304222ced7df9b3d5fb0a043b3c2a1ad8
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date:   Fri Mar 13 08:56:38 2020 +0000

    locking/lockdep: Fix bad recursion pattern

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16d64bac100000
start commit:   7d194c21 Linux 5.4-rc4
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=6c03e4d33fa96d51
dashboard link: https://syzkaller.appspot.com/bug?extid=f9545ab3e9f85cd43a3a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10a0a8c0e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13dd2dd8e00000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: locking/lockdep: Fix bad recursion pattern

For information about bisection process see: https://goo.gl/tpsmEJ#bisection