------------[ cut here ]------------ WARNING: kernel/rcu/sync.c:177 at rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177, CPU#0: kworker/0:0/9 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.16.0-rc3-next-20250623-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 f7 c5 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: ffff888055d3e358 RCX: 8e0a5922d45c7400 RDX: 0000000000000000 RSI: ffffffff8be322a0 RDI: ffff888055d3e358 RBP: 0000000000000217 R08: ffffffff8dfe04ef R09: 1ffffffff1bfc09d R10: dffffc0000000000 R11: fffffbfff1bfc09e R12: dffffc0000000000 R13: 1ffff1100aba7c6b R14: ffff888055d3e358 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125c25000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe79497fd38 CR3: 000000007b830000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245