BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 44 Comm: kworker/u8:2 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: xfs_iwalk-11073 xfs_pwork_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 get_partial_node+0x44/0x410 mm/slub.c:2866 get_partial mm/slub.c:2980 [inline] ___slab_alloc+0x650/0xeb4 mm/slub.c:3838 __slab_alloc+0x74/0xd0 mm/slub.c:3948 __slab_alloc_node mm/slub.c:4023 [inline] slab_alloc_node mm/slub.c:4184 [inline] __do_kmalloc_node mm/slub.c:4326 [inline] __kmalloc_noprof+0x370/0x4c8 mm/slub.c:4339 kmalloc_noprof include/linux/slab.h:909 [inline] xfs_buf_alloc_kmem fs/xfs/xfs_buf.c:135 [inline] xfs_buf_alloc_backing_mem fs/xfs/xfs_buf.c:200 [inline] xfs_buf_alloc+0x880/0x1f18 fs/xfs/xfs_buf.c:312 xfs_buf_find_insert+0x68/0x1140 fs/xfs/xfs_buf.c:505 xfs_buf_get_map+0x1034/0x1750 fs/xfs/xfs_buf.c:609 xfs_buf_read_map+0x90/0x9e8 fs/xfs/xfs_buf.c:702 xfs_trans_read_buf_map+0x1bc/0x964 fs/xfs/xfs_trans_buf.c:304 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline] xfs_alloc_read_agfl+0x198/0x35c fs/xfs/libxfs/xfs_alloc.c:885 xfs_alloc_fix_freelist+0xc18/0x1004 fs/xfs/libxfs/xfs_alloc.c:2961 xfs_alloc_vextent_prepare_ag+0xd4/0x6ac fs/xfs/libxfs/xfs_alloc.c:3541 xfs_alloc_vextent_iterate_ags+0x130/0x9d4 fs/xfs/libxfs/xfs_alloc.c:3725 xfs_alloc_vextent_start_ag+0x2ec/0x78c fs/xfs/libxfs/xfs_alloc.c:3814 xfs_bmap_btalloc_best_length fs/xfs/libxfs/xfs_bmap.c:3622 [inline] xfs_bmap_btalloc fs/xfs/libxfs/xfs_bmap.c:3667 [inline] xfs_bmapi_allocate+0x1220/0x2450 fs/xfs/libxfs/xfs_bmap.c:3942 xfs_bmapi_write+0x698/0xfb8 fs/xfs/libxfs/xfs_bmap.c:4271 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:1333 xfs_qm_dqusage_adjust+0x428/0x5b0 fs/xfs/xfs_qm.c:1459 xfs_iwalk_ag_recs+0x42c/0x7e0 fs/xfs/xfs_iwalk.c:209 xfs_iwalk_run_callbacks+0x1c0/0x3f0 fs/xfs/xfs_iwalk.c:370 xfs_iwalk_ag+0x6ac/0x82c fs/xfs/xfs_iwalk.c:476 xfs_iwalk_ag_work+0xfc/0x1a8 fs/xfs/xfs_iwalk.c:625 xfs_pwork_work+0x80/0x1a4 fs/xfs/xfs_pwork.c:47 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