BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 4826 Comm: kworker/u8:9 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: xfs_iwalk-8921 xfs_pwork_work 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 seqcount_lockdep_reader_access+0xbc/0x104 include/linux/seqlock.h:72 ktime_get+0x64/0x214 kernel/time/timekeeping.c:818 hrtimer_cb_get_time include/linux/hrtimer.h:164 [inline] start_dl_timer+0x1b8/0x428 kernel/sched/deadline.c:1105 update_curr_dl_se+0x364/0x5ec kernel/sched/deadline.c:1498 dl_server_update+0x84/0xb0 kernel/sched/deadline.c:1582 update_curr+0x338/0x600 kernel/sched/fair.c:1243 enqueue_entity+0x70/0x9ec kernel/sched/fair.c:5253 enqueue_task_fair+0x774/0x104c kernel/sched/fair.c:6876 enqueue_task+0x7c/0x2f4 kernel/sched/core.c:2090 activate_task kernel/sched/core.c:2132 [inline] ttwu_do_activate+0x1a4/0x764 kernel/sched/core.c:3741 ttwu_queue kernel/sched/core.c:4004 [inline] try_to_wake_up+0x4c4/0xe24 kernel/sched/core.c:4328 wake_up_process+0x18/0x24 kernel/sched/core.c:4459 kick_pool+0x3e0/0x58c kernel/workqueue.c:1283 __queue_work+0xdbc/0x1210 kernel/workqueue.c:2340 queue_work_on+0xdc/0x18c kernel/workqueue.c:2390 queue_work include/linux/workqueue.h:669 [inline] loop_queue_work drivers/block/loop.c:852 [inline] loop_queue_rq+0x944/0xaa8 drivers/block/loop.c:1878 __blk_mq_issue_directly block/blk-mq.c:2695 [inline] blk_mq_request_issue_directly+0x2c0/0x560 block/blk-mq.c:2782 blk_mq_issue_direct+0x254/0x558 block/blk-mq.c:2803 blk_mq_dispatch_queue_requests+0x568/0x674 block/blk-mq.c:2878 blk_mq_flush_plug_list+0x370/0x488 block/blk-mq.c:2961 __blk_flush_plug+0x330/0x408 block/blk-core.c:1220 blk_finish_plug+0x68/0x90 block/blk-core.c:1247 xfs_buf_submit_bio fs/xfs/xfs_buf.c:1368 [inline] xfs_buf_submit+0x698/0xa5c fs/xfs/xfs_buf.c:1474 _xfs_buf_read fs/xfs/xfs_buf.c:645 [inline] xfs_buf_read_map+0x314/0x9e8 fs/xfs/xfs_buf.c:712 xfs_trans_read_buf_map+0x1bc/0x964 fs/xfs/xfs_trans_buf.c:304 xfs_trans_read_buf fs/xfs/xfs_trans.h:210 [inline] xfs_read_agf+0x238/0x58c fs/xfs/libxfs/xfs_alloc.c:3376 xfs_alloc_read_agf+0x164/0xb78 fs/xfs/libxfs/xfs_alloc.c:3411 xfs_alloc_fix_freelist+0x45c/0x1004 fs/xfs/libxfs/xfs_alloc.c:2875 xfs_alloc_vextent_prepare_ag+0xd4/0x6ac fs/xfs/libxfs/xfs_alloc.c:3566 xfs_alloc_vextent_iterate_ags+0x130/0x9d4 fs/xfs/libxfs/xfs_alloc.c:3750 xfs_alloc_vextent_start_ag+0x2ec/0x78c fs/xfs/libxfs/xfs_alloc.c:3839 xfs_bmap_btalloc_best_length fs/xfs/libxfs/xfs_bmap.c:3627 [inline] xfs_bmap_btalloc fs/xfs/libxfs/xfs_bmap.c:3672 [inline] xfs_bmapi_allocate+0x12c0/0x2500 fs/xfs/libxfs/xfs_bmap.c:3947 xfs_bmapi_write+0x698/0xfb8 fs/xfs/libxfs/xfs_bmap.c:4276 xfs_dquot_disk_alloc+0x41c/0x964 fs/xfs/xfs_dquot.c:381 xfs_qm_dqread+0x150/0x5f4 fs/xfs/xfs_dquot.c:720 xfs_qm_dqget+0x1d0/0x584 fs/xfs/xfs_dquot.c:932 xfs_qm_quotacheck_dqadjust+0xc4/0x558 fs/xfs/xfs_qm.c:1309 xfs_qm_dqusage_adjust+0x480/0x5b0 fs/xfs/xfs_qm.c:1442 xfs_iwalk_ag_recs+0x42c/0x7e0 fs/xfs/xfs_iwalk.c:209 xfs_iwalk_run_callbacks+0x1c0/0x3e8 fs/xfs/xfs_iwalk.c:370 xfs_iwalk_ag+0x6ac/0x82c fs/xfs/xfs_iwalk.c:473 xfs_iwalk_ag_work+0xf8/0x1a0 fs/xfs/xfs_iwalk.c:620 xfs_pwork_work+0x80/0x1a4 fs/xfs/xfs_pwork.c:47 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