BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 279 Comm: kworker/u8:5 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: btree_update btree_interior_update_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (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:3856 [inline] validate_chain kernel/locking/lockdep.c:3877 [inline] __lock_acquire+0xf50/0x3058 kernel/locking/lockdep.c:5235 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 __debug_check_no_obj_freed lib/debugobjects.c:1088 [inline] debug_check_no_obj_freed+0x148/0x470 lib/debugobjects.c:1129 slab_free_hook mm/slub.c:2311 [inline] slab_free mm/slub.c:4642 [inline] kfree+0x11c/0x474 mm/slub.c:4841 kvfree+0x30/0x40 mm/slub.c:5055 btree_trans_restart_ip fs/bcachefs/btree_iter.h:352 [inline] btree_trans_restart+0xac/0x134 fs/bcachefs/btree_iter.h:361 bch2_trans_relock_fail+0x3d8/0x914 fs/bcachefs/btree_locking.c:763 __bch2_trans_relock+0x2d4/0x330 fs/bcachefs/btree_locking.c:783 bch2_trans_relock+0x24/0x34 fs/bcachefs/btree_locking.c:794 bch2_trans_commit_error+0x850/0x114c fs/bcachefs/btree_trans_commit.c:-1 __bch2_trans_commit+0x5100/0x62d0 fs/bcachefs/btree_trans_commit.c:1069 bch2_trans_commit fs/bcachefs/btree_update.h:195 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:705 [inline] btree_interior_update_work+0xb80/0x1cfc fs/bcachefs/btree_update_interior.c:843 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847