------------[ cut here ]------------ WARNING: kernel/rcu/sync.c:177 at rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177, CPU#1: kworker/1:6/5983 Modules linked in: CPU: 1 UID: 0 PID: 5983 Comm: kworker/1:6 Not tainted 6.16.0-rc5-next-20250711-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events destroy_super_work RIP: 0010:rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177 Code: 18 e8 67 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 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:ffffc900049c79e8 EFLAGS: 00010246 RAX: 0000000000000002 RBX: ffff88807f352358 RCX: 2f274c25d08c3200 RDX: 0000000000000000 RSI: ffffffff8be347a0 RDI: ffff88807f352358 RBP: 0000000000000254 R08: ffffffff8dfdeaaf R09: 1ffffffff1bfbd55 R10: dffffc0000000000 R11: fffffbfff1bfbd56 R12: dffffc0000000000 R13: 1ffff1100fe6a46b R14: ffff88807f352358 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125cc6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3c7b08 CR3: 0000000058328000 CR4: 00000000003526f0 Call Trace: percpu_free_rwsem+0x40/0x80 kernel/locking/percpu-rwsem.c:42 destroy_super_work+0xee/0x130 fs/super.c:283 process_one_work kernel/workqueue.c:3239 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3322 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3403 kthread+0x711/0x8a0 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