EXT4-fs error (device loop8): ext4_orphan_get:1393: comm syz.8.289: couldn't read orphan inode 15 (err -117) EXT4-fs (loop8): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 8890 Comm: syz.8.289 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lookup_chain_cache_add kernel/locking/lockdep.c:3851 [inline] validate_chain kernel/locking/lockdep.c:3872 [inline] __lock_acquire+0x1fb8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 debug_object_activate+0x80/0x4ac lib/debugobjects.c:708 debug_timer_activate kernel/time/timer.c:836 [inline] __mod_timer+0x948/0xcf4 kernel/time/timer.c:1171 add_timer_global+0x88/0xc0 kernel/time/timer.c:1330 __queue_delayed_work+0x1a8/0x23c kernel/workqueue.c:2523 queue_delayed_work_on+0xec/0x1b0 kernel/workqueue.c:2552 queue_delayed_work include/linux/workqueue.h:677 [inline] wb_wakeup_delayed+0xf0/0x120 fs/fs-writeback.c:165 __mark_inode_dirty+0x740/0x11dc fs/fs-writeback.c:2589 mark_buffer_dirty+0x258/0x4f0 fs/buffer.c:1205 __ext4_handle_dirty_metadata+0x1c4/0x6f4 fs/ext4/ext4_jbd2.c:384 __ext4_new_inode+0x1860/0x3830 fs/ext4/ialloc.c:1122 ext4_create+0x234/0x480 fs/ext4/namei.c:2834 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3930 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600