BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 4414 Comm: kworker/u4:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Workqueue: xfs_iwalk-7754 xfs_pwork_work
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 _raw_spin_lock_nested+0x5c/0x78 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested kernel/sched/core.c:537 [inline]
 raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
 rq_lock kernel/sched/sched.h:1645 [inline]
 __schedule+0x2b8/0x1b18 kernel/sched/core.c:6477
 preempt_schedule_common+0xec/0x1a0 kernel/sched/core.c:6730
 preempt_schedule+0x64/0x84 kernel/sched/core.c:6754
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irq+0x8c/0x90 kernel/locking/spinlock.c:202
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 loop_queue_work drivers/block/loop.c:894 [inline]
 loop_queue_rq+0x954/0xa80 drivers/block/loop.c:1874
 __blk_mq_issue_directly block/blk-mq.c:2631 [inline]
 __blk_mq_try_issue_directly+0x410/0x67c block/blk-mq.c:2684
 blk_mq_request_issue_directly block/blk-mq.c:2718 [inline]
 blk_mq_plug_issue_direct+0x1fc/0x574 block/blk-mq.c:2738
 blk_mq_flush_plug_list+0x5d4/0xa48 block/blk-mq.c:2838
 __blk_flush_plug+0x32c/0x3ac block/blk-core.c:1179
 blk_finish_plug+0x68/0x90 block/blk-core.c:1203
 _xfs_buf_ioapply+0x344/0x510 fs/xfs/xfs_buf.c:1598
 __xfs_buf_submit+0x2f0/0x7f8 fs/xfs/xfs_buf.c:1676
 xfs_buf_submit fs/xfs/xfs_buf.c:60 [inline]
 _xfs_buf_read fs/xfs/xfs_buf.c:757 [inline]
 xfs_buf_read_map+0x3b8/0x9fc fs/xfs/xfs_buf.c:821
 xfs_trans_read_buf_map+0x1f0/0xac4 fs/xfs/xfs_trans_buf.c:289
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_read_agf+0x24c/0x5f4 fs/xfs/libxfs/xfs_alloc.c:3102
 xfs_alloc_read_agf+0x184/0xb8c fs/xfs/libxfs/xfs_alloc.c:3134
 xfs_alloc_fix_freelist+0x480/0xfb4 fs/xfs/libxfs/xfs_alloc.c:2676
 xfs_alloc_vextent+0xb0c/0x1bcc fs/xfs/libxfs/xfs_alloc.c:3309
 xfs_bmap_btalloc+0xa90/0x17c0 fs/xfs/libxfs/xfs_bmap.c:3662
 xfs_bmapi_allocate+0x558/0xbcc fs/xfs/libxfs/xfs_bmap.c:-1
 xfs_bmapi_write+0x668/0xedc fs/xfs/libxfs/xfs_bmap.c:4462
 xfs_dquot_disk_alloc+0x3ec/0xa00 fs/xfs/xfs_dquot.c:329
 xfs_qm_dqread+0x158/0x6e4 fs/xfs/xfs_dquot.c:665
 xfs_qm_dqget+0x180/0x510 fs/xfs/xfs_dquot.c:869
 xfs_qm_quotacheck_dqadjust+0xc4/0x664 fs/xfs/xfs_qm.c:1085
 xfs_qm_dqusage_adjust+0x38c/0x554 fs/xfs/xfs_qm.c:1204
 xfs_iwalk_ag_recs+0x434/0x854 fs/xfs/xfs_iwalk.c:220
 xfs_iwalk_run_callbacks+0x1bc/0x3b0 fs/xfs/xfs_iwalk.c:376
 xfs_iwalk_ag+0x6a4/0x814 fs/xfs/xfs_iwalk.c:482
 xfs_iwalk_ag_work+0xfc/0x1a8 fs/xfs/xfs_iwalk.c:624
 xfs_pwork_work+0x80/0x1a4 fs/xfs/xfs_pwork.c:47
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850