------------[ cut here ]------------ WARNING: CPU: 1 PID: 5909 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177 Modules linked in: CPU: 1 UID: 0 PID: 5909 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 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 57 c6 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 e9 95 af 55 09 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:ffffc90004b879e8 EFLAGS: 00010246 RAX: 0000000000000002 RBX: ffff888032aec338 RCX: 34fafe3db472a900 RDX: 0000000000000000 RSI: ffffffff8b620e60 RDI: ffff888032aec338 RBP: 0000000000000242 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1b09bfe R12: dffffc0000000000 R13: 1ffff1100655d867 R14: ffff888032aec338 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881269c1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ec6f956c0 CR3: 000000003d69c000 CR4: 00000000003526f0 Call Trace: 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:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245