BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 6765 Comm: kworker/u8:10 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 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 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] __mark_inode_dirty+0x394/0x1090 fs/fs-writeback.c:2552 filemap_dirty_folio+0x114/0x19c mm/page-writeback.c:2776 folio_mark_dirty+0xf0/0x154 mm/page-writeback.c:2849 btrfs_meta_folio_set_dirty+0xcc/0x11c fs/btrfs/subpage.c:664 set_extent_buffer_dirty+0x2a0/0x6e8 fs/btrfs/extent_io.c:3657 btrfs_mark_buffer_dirty+0x118/0x338 fs/btrfs/disk-io.c:4455 btrfs_force_cow_block+0xd20/0x2044 fs/btrfs/ctree.c:606 btrfs_cow_block+0x3d4/0x934 fs/btrfs/ctree.c:699 btrfs_search_slot+0x9ec/0x2268 fs/btrfs/ctree.c:2097 btrfs_lookup_file_extent+0xd8/0x128 fs/btrfs/file-item.c:265 btrfs_drop_extents+0x348/0x248c fs/btrfs/file.c:187 __cow_file_range_inline+0x1f4/0x115c fs/btrfs/inode.c:633 cow_file_range_inline+0x27c/0x338 fs/btrfs/inode.c:692 cow_file_range+0x46c/0xdbc fs/btrfs/inode.c:1297 run_delalloc_cow+0x88/0x11c fs/btrfs/inode.c:1689 submit_uncompressed_range+0x110/0x454 fs/btrfs/inode.c:1070 submit_one_async_extent fs/btrfs/inode.c:1122 [inline] submit_compressed_extents+0x618/0x13a0 fs/btrfs/inode.c:1578 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:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed