BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 PID: 6907 Comm: syz.6.532 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 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 do_write_seqcount_begin_nested include/linux/seqlock.h:515 [inline] do_write_seqcount_begin include/linux/seqlock.h:541 [inline] psi_group_change+0x240/0x1344 kernel/sched/psi.c:801 psi_task_change+0xec/0x244 kernel/sched/psi.c:924 psi_enqueue kernel/sched/stats.h:143 [inline] enqueue_task kernel/sched/core.c:2055 [inline] activate_task+0x224/0x244 kernel/sched/core.c:2087 ttwu_do_activate+0x150/0x218 kernel/sched/core.c:3699 ttwu_queue kernel/sched/core.c:3904 [inline] try_to_wake_up+0x424/0xc74 kernel/sched/core.c:4227 wake_up_process+0x18/0x24 kernel/sched/core.c:4361 wake_up_worker kernel/workqueue.c:859 [inline] insert_work+0x2a4/0x37c kernel/workqueue.c:1369 __queue_work+0xcbc/0x123c kernel/workqueue.c:1520 queue_work_on+0xc0/0x16c kernel/workqueue.c:1548 queue_work include/linux/workqueue.h:512 [inline] wiphy_work_queue net/wireless/core.c:1636 [inline] wiphy_delayed_work_timer+0x174/0x1a0 net/wireless/core.c:1673 call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x460/0x6bc kernel/time/timer.c:1820 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] lock_acquire+0x24c/0x644 kernel/locking/lockdep.c:5665 rcu_lock_acquire+0x38/0x44 include/linux/rcupdate.h:350 rcu_read_lock include/linux/rcupdate.h:791 [inline] folio_memcg_lock+0x24/0x1fc mm/memcontrol.c:2101 lock_page_memcg+0x48/0x58 mm/memcontrol.c:2137 page_remove_rmap+0x44/0xe74 mm/rmap.c:1426 zap_pte_range mm/memory.c:1453 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0xc98/0x1dd0 mm/memory.c:1645 unmap_single_vma mm/memory.c:1691 [inline] unmap_vmas+0x234/0x348 mm/memory.c:1730 exit_mmap+0x154/0x934 mm/mmap.c:3250 __mmput+0xec/0x39c kernel/fork.c:1200 mmput+0x70/0xac kernel/fork.c:1222 exit_mm+0x140/0x234 kernel/exit.c:565 do_exit+0x4cc/0x19a8 kernel/exit.c:867 do_group_exit+0x194/0x22c kernel/exit.c:1022 get_signal+0x11d0/0x1310 kernel/signal.c:2871 do_signal arch/arm64/kernel/signal.c:1081 [inline] do_notify_resume+0x340/0x2b0c arch/arm64/kernel/signal.c:1134 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+0x98/0x138 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