BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 9888 Comm: syz.4.509 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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_process+0x18/0x24 kernel/sched/core.c:4424 kick_pool+0x3e0/0x58c kernel/workqueue.c:1285 __queue_work+0xdbc/0x1210 kernel/workqueue.c:2342 queue_work_on+0xdc/0x18c kernel/workqueue.c:2392 queue_work include/linux/workqueue.h:669 [inline] loop_queue_work drivers/block/loop.c:864 [inline] loop_queue_rq+0x944/0xaa8 drivers/block/loop.c:1891 __blk_mq_issue_directly block/blk-mq.c:2704 [inline] blk_mq_request_issue_directly+0x2c0/0x560 block/blk-mq.c:2791 blk_mq_issue_direct+0x254/0x558 block/blk-mq.c:2812 blk_mq_dispatch_queue_requests+0x568/0x674 block/blk-mq.c:2887 blk_mq_flush_plug_list+0x370/0x488 block/blk-mq.c:2970 __blk_flush_plug+0x330/0x408 block/blk-core.c:1225 blk_finish_plug block/blk-core.c:1252 [inline] __submit_bio+0x3f4/0x4d8 block/blk-core.c:651 __submit_bio_noacct_mq block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x29c/0x9a4 block/blk-core.c:755 submit_bio_noacct+0xde0/0x186c block/blk-core.c:879 submit_bio+0x3b4/0x550 block/blk-core.c:921 submit_bh_wbc+0x3ec/0x4bc fs/buffer.c:2824 submit_bh fs/buffer.c:2829 [inline] __sync_dirty_buffer+0x174/0x304 fs/buffer.c:2867 sync_dirty_buffer+0x24/0x34 fs/buffer.c:2880 ntfs_write_bh+0x498/0x640 fs/ntfs3/fsntfs.c:1461 indx_write fs/ntfs3/index.c:1027 [inline] indx_update_dup+0x458/0x620 fs/ntfs3/index.c:2710 ni_update_parent+0x780/0xb10 fs/ntfs3/frecord.c:3182 ni_write_inode+0x834/0xd74 fs/ntfs3/frecord.c:3277 ntfs_sync_inode+0x2c/0x3c fs/ntfs3/inode.c:1047 ntfs_truncate fs/ntfs3/file.c:498 [inline] ntfs_setattr+0x5c4/0x954 fs/ntfs3/file.c:806 notify_change+0xa0c/0xcb8 fs/attr.c:546 do_truncate+0x198/0x210 fs/open.c:68 handle_truncate fs/namei.c:3596 [inline] do_open fs/namei.c:3979 [inline] path_openat+0x25a0/0x2c40 fs/namei.c:4134 do_filp_open+0x18c/0x36c fs/namei.c:4161 do_sys_openat2+0x11c/0x1b4 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 ntfs3(loop4): ino=1e, "file1" ntfs_sync_inode failed, -22.