syzbot

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WARNING: CPU: 0 PID: 9 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Tainted: G        W           6.16.0-syzkaller-03556-g0919a5b3b11c #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events destroy_super_work
RIP: 0010:rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177
Code: 18 e8 47 c3 00 00 43 0f b6 44 25 00 84 c0 0f 85 82 00 00 00 83 3b 00 75 1f 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 <0f> 0b 90 e9 66 ff ff ff 90 0f 0b 90 eb 8a 90 0f 0b 90 eb db 89 d9
RSP: 0018:ffffc900000e79e8 EFLAGS: 00010246
RAX: 0000000000000002 RBX: ffff88803549a338 RCX: fc14e17df1fabd00
RDX: 0000000000000000 RSI: ffffffff8b61e160 RDI: ffff88803549a338
RBP: 000000000000019f R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1ac9b52 R12: dffffc0000000000
R13: 1ffff11006a93467 R14: ffff88803549a338 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888126b23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8a95ed7b50 CR3: 000000003b260000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 percpu_free_rwsem+0x43/0x80 kernel/locking/percpu-rwsem.c:42
 destroy_super_work+0xee/0x130 fs/super.c:283
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>