F2FS-fs (loop6): Found nat_bits in checkpoint F2FS-fs (loop6): Mounted with checkpoint version = 48b305e5 BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 PID: 6804 Comm: syz.6.580 Not tainted 5.15.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline] validate_chain kernel/locking/lockdep.c:3756 [inline] __lock_acquire+0x1b64/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 _raw_spin_lock_nested+0xb4/0x110 kernel/locking/spinlock.c:368 raw_spin_rq_lock_nested kernel/sched/core.c:475 [inline] raw_spin_rq_lock kernel/sched/sched.h:1326 [inline] rq_lock kernel/sched/sched.h:1621 [inline] __schedule+0x328/0x1e48 kernel/sched/core.c:6287 preempt_schedule_common+0x140/0x260 kernel/sched/core.c:6549 preempt_schedule+0x64/0x84 kernel/sched/core.c:6574 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] _raw_spin_unlock_irqrestore+0x114/0x158 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline] __wake_up_common_lock kernel/sched/wait.c:140 [inline] __wake_up+0x118/0x1a0 kernel/sched/wait.c:157 f2fs_issue_checkpoint+0x21c/0x3c0 fs/f2fs/checkpoint.c:1883 f2fs_sync_fs+0x1c0/0x4e8 fs/f2fs/super.c:1678 f2fs_create+0x918/0x11e8 fs/f2fs/namei.c:382 vfs_create+0x2cc/0x434 fs/namei.c:3162 do_mknodat+0x314/0x694 fs/namei.c:3994 __do_sys_mknodat fs/namei.c:4022 [inline] __se_sys_mknodat fs/namei.c:4019 [inline] __arm64_sys_mknodat+0xb0/0xcc fs/namei.c:4019 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584