syzbot

------------[ cut here ]------------
WARNING: CPU: 0 PID: 3646 at kernel/rcu/sync.c:193 rcu_sync_dtor+0xba/0x160 kernel/rcu/sync.c:206
Modules linked in:
CPU: 0 PID: 3646 Comm: kworker/0:8 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events destroy_super_work
RIP: 0010:rcu_sync_dtor+0xba/0x160 kernel/rcu/sync.c:193
Code: 0c 4c 89 f7 e8 97 2b d2 08 85 ed 74 14 e8 3e a0 00 00 42 0f b6 04 23 84 c0 75 77 41 83 3f 00 75 14 5b 41 5c 41 5e 41 5f 5d c3 <0f> 0b e9 75 ff ff ff 0f 0b eb 8d 0f 0b eb e8 89 d9 80 e1 07 80 c1
RSP: 0018:ffffc90004167bf8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff88802ffd6394 RCX: ffff888023965940
RDX: 0000000000000000 RSI: ffffffff8ad8f7a0 RDI: ffff88802ffd6390
RBP: ffffc90004167dc8 R08: ffffffff81540fef R09: fffffbfff1bd2a56
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888062234028 R14: ffff88802ffd6390 R15: ffff88802ffd6390
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e9a5d4000 CR3: 0000000059a38000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 percpu_free_rwsem+0x3d/0x80 kernel/locking/percpu-rwsem.c:40
 destroy_super_work+0x15/0x40 fs/super.c:164
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>