BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 1937 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: btrfs-delalloc btrfs_work_helper Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 do_write_seqcount_begin_nested include/linux/seqlock.h:477 [inline] do_write_seqcount_begin include/linux/seqlock.h:503 [inline] psi_write_begin+0x1b0/0x320 kernel/sched/psi.c:183 psi_task_change+0xd8/0x318 kernel/sched/psi.c:919 psi_enqueue kernel/sched/stats.h:166 [inline] enqueue_task+0x250/0x2f4 kernel/sched/core.c:2094 activate_task kernel/sched/core.c:2134 [inline] ttwu_do_activate+0x1a4/0x764 kernel/sched/core.c:3706 ttwu_queue kernel/sched/core.c:3969 [inline] try_to_wake_up+0x4c4/0xe24 kernel/sched/core.c:4293 wake_up_state+0x14/0x20 kernel/sched/core.c:4430 wake_page_function+0x128/0x398 mm/filemap.c:1175 __wake_up_common kernel/sched/wait.c:108 [inline] __wake_up_locked_key+0xf8/0x16c kernel/sched/wait.c:166 folio_wake_bit+0xc4/0x1e4 mm/filemap.c:1202 folio_unlock+0xbc/0x120 mm/filemap.c:1513 btrfs_folio_end_lock+0x6cc/0x9f4 fs/btrfs/subpage.c:-1 process_one_folio fs/btrfs/extent_io.c:262 [inline] __process_folios_contig+0x2f4/0x41c fs/btrfs/extent_io.c:284 extent_clear_unlock_delalloc+0x90/0xac fs/btrfs/extent_io.c:476 cow_file_range_inline+0x2f4/0x338 fs/btrfs/inode.c:722 cow_file_range+0x284/0xdd4 fs/btrfs/inode.c:1304 run_delalloc_cow+0x84/0x118 fs/btrfs/inode.c:1697 submit_uncompressed_range+0x110/0x454 fs/btrfs/inode.c:1077 submit_one_async_extent fs/btrfs/inode.c:1129 [inline] submit_compressed_extents+0x618/0x13a0 fs/btrfs/inode.c:1586 run_ordered_work fs/btrfs/async-thread.c:243 [inline] btrfs_work_helper+0x52c/0xca8 fs/btrfs/async-thread.c:322 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844