BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 PID: 4536 Comm: syz-executor Not tainted 6.1.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline] validate_chain kernel/locking/lockdep.c:3793 [inline] __lock_acquire+0x1b88/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162 swake_up_one+0x2c/0x134 kernel/sched/swait.c:51 swake_up_one_online+0xe8/0x1e8 kernel/rcu/tree.c:1082 rcu_gp_kthread_wake kernel/rcu/tree.c:1110 [inline] rcu_report_qs_rsp+0x274/0x42c kernel/rcu/tree.c:1931 rcu_report_unblock_qs_rnp kernel/rcu/tree.c:2035 [inline] rcu_preempt_deferred_qs_irqrestore+0xa44/0xf40 kernel/rcu/tree_plugin.h:557 rcu_read_unlock_special+0xa0/0x48c kernel/rcu/tree_plugin.h:681 __rcu_read_unlock+0xac/0x13c kernel/rcu/tree_plugin.h:426 rcu_read_unlock+0xa4/0xc0 include/linux/rcupdate.h:823 blk_mq_submit_bio+0x108c/0x1d08 block/blk-mq.c:3039 __submit_bio+0x214/0x2a0 block/blk-core.c:591 __submit_bio_noacct_mq block/blk-core.c:668 [inline] submit_bio_noacct_nocheck+0x794/0xbf8 block/blk-core.c:697 submit_bio_noacct+0xce8/0x1728 block/blk-core.c:792 submit_bio+0x2c0/0x45c block/blk-core.c:837 submit_bh_wbc+0x398/0x468 fs/buffer.c:2702 submit_bh+0x2c/0x3c fs/buffer.c:2707 ocfs2_write_block+0x38c/0x7bc fs/ocfs2/buffer_head_io.c:67 ocfs2_update_disk_slot+0x3e8/0x5ec fs/ocfs2/slot_map.c:197 ocfs2_put_slot+0x140/0x4bc fs/ocfs2/slot_map.c:515 ocfs2_dismount_volume+0x350/0x99c fs/ocfs2/super.c:1901 ocfs2_put_super+0x110/0x3e8 fs/ocfs2/super.c:1609 generic_shutdown_super+0x130/0x328 fs/super.c:501 kill_block_super+0x70/0xdc fs/super.c:1470 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ocfs2: Unmounting device (7,6) on (node local)