------------[ cut here ]------------ WARNING: kernel/rcu/sync.c:177 at rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177, CPU#1: kworker/1:0/24 Modules linked in: CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events destroy_super_work RIP: 0010:rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177 Code: 18 e8 27 cb 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 15 3d b5 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:ffffc900001e79e8 EFLAGS: 00010246 RAX: 0000000000000002 RBX: ffff8880540a8350 RCX: e6b7e00964705500 RDX: 0000000000000000 RSI: ffffffff8bc018c0 RDI: ffff8880540a8350 RBP: 0000000000000001 R08: ffffffff8dde3763 R09: 1ffffffff1bbc6ec R10: dffffc0000000000 R11: fffffbfff1bbc6ed R12: dffffc0000000000 R13: 1ffff1100a81506a R14: ffff8880540a8350 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125f4f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fafdd1156c0 CR3: 000000007e448000 CR4: 00000000003526f0 Call Trace: percpu_free_rwsem+0x40/0x80 kernel/locking/percpu-rwsem.c:42 destroy_super_work+0x217/0x310 fs/super.c:283 process_one_work+0x93a/0x15a0 kernel/workqueue.c:3261 process_scheduled_works kernel/workqueue.c:3344 [inline] worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246