------------[ cut here ]------------ WARNING: CPU: 0 PID: 5924 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177 Modules linked in: CPU: 0 UID: 0 PID: 5924 Comm: kworker/0:7 Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #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 27 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:ffffc900044c7a88 EFLAGS: 00010246 RAX: 0000000000000002 RBX: ffff8880280a6350 RCX: 81aa40117fdc4b00 RDX: 0000000000000000 RSI: ffffffff8bc0ff00 RDI: ffff8880280a6350 RBP: 0000000000000247 R08: ffffffff8dddecaf R09: 1ffffffff1bbbd95 R10: dffffc0000000000 R11: fffffbfff1bbbd96 R12: dffffc0000000000 R13: 1ffff11005014c6a R14: ffff8880280a6350 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8948ad3438 CR3: 000000007f518000 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:282 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245