Re: WARNING: bad unlock balance in rcu_core

[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=142baee4100000
start commit:   5a1e843c Merge tag 'mips_fixes_5.4_3' of git://git.kernel...
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=420126a10fdda0f1
dashboard link: https://syzkaller.appspot.com/bug?extid=36baa6c2180e959e19b1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1108239ce00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13cf40a8e00000

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