BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 9317 Comm: dhcpcd-run-hook Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP 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+0x140/0x2e0 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_account_irqtime+0x20c/0x688 kernel/sched/psi.c:1030 __schedule+0xa14/0x2a7c kernel/sched/core.c:6856 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7190 raw_irqentry_exit_cond_resched+0x30/0x44 kernel/entry/common.c:173 irqentry_exit+0x1b0/0x308 kernel/entry/common.c:216 exit_to_kernel_mode+0x10/0x1c arch/arm64/kernel/entry-common.c:58 __el1_irq arch/arm64/kernel/entry-common.c:500 [inline] el1_interrupt+0x4c/0x60 arch/arm64/kernel/entry-common.c:510 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 bytes_is_nonzero mm/kasan/generic.c:98 [inline] (P) memory_is_nonzero mm/kasan/generic.c:115 [inline] (P) memory_is_poisoned_n mm/kasan/generic.c:140 [inline] (P) memory_is_poisoned mm/kasan/generic.c:172 [inline] (P) check_region_inline mm/kasan/generic.c:191 [inline] (P) kasan_check_range+0x7c/0x2a4 mm/kasan/generic.c:200 (P) __kasan_check_read+0x20/0x30 mm/kasan/shadow.c:31 instrument_atomic_read include/linux/instrumented.h:68 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] __page_table_check_zero+0x1d0/0x3d4 mm/page_table_check.c:142 page_table_check_free include/linux/page_table_check.h:43 [inline] free_pages_prepare mm/page_alloc.c:1407 [inline] __free_frozen_pages+0xb9c/0xcb0 mm/page_alloc.c:2943 free_frozen_pages+0x14/0x20 mm/page_alloc.c:2981 __free_slab+0x100/0x1a4 mm/slub.c:3317 free_slab+0x28/0x160 mm/slub.c:3340 discard_slab+0x48/0x98 mm/slub.c:3346 __slab_free+0x208/0x23c mm/slub.c:6004 do_slab_free mm/slub.c:6618 [inline] ___cache_free+0x150/0x170 mm/slub.c:6737 qlink_free+0x48/0x94 mm/kasan/quarantine.c:163 qlist_free_all+0x44/0xb8 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x2c/0x88 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x344/0x680 mm/slub.c:5270 new_handle fs/jbd2/transaction.c:457 [inline] jbd2__journal_start+0x14c/0x51c fs/jbd2/transaction.c:484 __ext4_journal_start_sb+0x348/0x88c fs/ext4/ext4_jbd2.c:114 __ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline] ext4_dirty_inode+0xa0/0x104 fs/ext4/inode.c:6499 __mark_inode_dirty+0x358/0x15bc fs/fs-writeback.c:2587 generic_update_time fs/inode.c:2155 [inline] inode_update_time fs/inode.c:2168 [inline] touch_atime+0x440/0x818 fs/inode.c:2240 file_accessed include/linux/fs.h:2254 [inline] filemap_read+0xd64/0xea8 mm/filemap.c:2872 generic_file_read_iter+0xa0/0x450 mm/filemap.c:2992 ext4_file_read_iter+0x35c/0x4c8 fs/ext4/file.c:-1 new_sync_read fs/read_write.c:491 [inline] vfs_read+0x670/0x93c fs/read_write.c:572 ksys_read+0x120/0x210 fs/read_write.c:715 __do_sys_read fs/read_write.c:724 [inline] __se_sys_read fs/read_write.c:722 [inline] __arm64_sys_read+0x7c/0x90 fs/read_write.c:722 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596