Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.45' (ECDSA) to the list of known hosts.
syzkaller login: [   33.381339] IPVS: ftp: loaded support on port[0] = 21
executing program
[   33.519927] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[   33.542110] WARNING: CPU: 0 PID: 8108 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0
[   33.551934] Kernel panic - not syncing: panic_on_warn set ...
[   33.551934] 
[   33.559287] CPU: 0 PID: 8108 Comm: segctord Not tainted 4.19.211-syzkaller #0
[   33.566542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
[   33.575878] Call Trace:
[   33.578458]  dump_stack+0x1fc/0x2ef
[   33.582074]  panic+0x26a/0x50e
[   33.585253]  ? __warn_printk+0xf3/0xf3
[   33.589135]  ? account_page_dirtied+0x8cc/0xbb0
[   33.593792]  ? __probe_kernel_read+0x130/0x1b0
[   33.598359]  ? __warn.cold+0x5/0x5a
[   33.601973]  ? __warn+0xe4/0x200
[   33.605328]  ? account_page_dirtied+0x8cc/0xbb0
[   33.609987]  __warn.cold+0x20/0x5a
[   33.613518]  ? account_page_dirtied+0x8cc/0xbb0
[   33.618178]  report_bug+0x262/0x2b0
[   33.621796]  do_error_trap+0x1d7/0x310
[   33.625672]  ? math_error+0x310/0x310
[   33.629468]  ? nilfs_segctor_construct+0x764/0xae0
[   33.634383]  ? nilfs_segctor_thread+0x3cb/0xf50
[   33.639040]  ? mark_held_locks+0xf0/0xf0
[   33.643105]  ? error_entry+0x72/0xd0
[   33.646806]  ? trace_hardirqs_off_caller+0x2c/0x210
[   33.651813]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.656647]  invalid_op+0x14/0x20
[   33.660089] RIP: 0010:account_page_dirtied+0x8cc/0xbb0
[   33.665375] Code: 88 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ec e1 ca ff 31 ff 89 c3 89 c6 e8 f1 b3 e2 ff 85 db 0f 85 39 f9 ff ff e8 74 b2 e2 ff <0f> 0b e9 2d f9 ff ff e8 68 b2 e2 ff 4c 89 e6 4c 89 ef e8 9d b3 2d
[   33.684264] RSP: 0018:ffff8880b29bf868 EFLAGS: 00010093
[   33.689611] RAX: ffff888096e84080 RBX: 0000000000000000 RCX: ffffffff817fd2ef
[   33.696873] RDX: 0000000000000000 RSI: ffffffff817fd2fc RDI: 0000000000000005
[   33.704131] RBP: ffff88808d7e6b48 R08: 0000000000000000 R09: 0000000000000000
[   33.711386] R10: 0000000000000005 R11: 0000000000000000 R12: ffffea0002acaa00
[   33.718651] R13: ffff88808d7e69c0 R14: ffff88808d7e6838 R15: ffffea0002acaa08
[   33.725932]  ? account_page_dirtied+0x8bf/0xbb0
[   33.730610]  ? account_page_dirtied+0x8cc/0xbb0
[   33.735290]  ? account_page_dirtied+0x8cc/0xbb0
[   33.739969]  __set_page_dirty+0x7f/0x3e0
[   33.744020]  ? lock_page_memcg+0xa7/0x220
[   33.748178]  mark_buffer_dirty+0x424/0x5c0
[   33.752404]  nilfs_btree_propagate+0x728/0xd80
[   33.756978]  nilfs_bmap_propagate+0x73/0x170
[   33.761380]  nilfs_collect_dat_data+0x45/0xd0
[   33.765865]  nilfs_segctor_apply_buffers+0x14a/0x490
[   33.770955]  ? nilfs_collect_file_bmap+0x70/0x70
[   33.775705]  nilfs_segctor_scan_file+0x475/0x6f0
[   33.780459]  ? nilfs_collect_file_data+0xd0/0xd0
[   33.785215]  ? check_preemption_disabled+0x41/0x280
[   33.790224]  nilfs_segctor_do_construct+0x1562/0x8360
[   33.795421]  ? nilfs_segctor_scan_file+0x6f0/0x6f0
[   33.800341]  ? lock_downgrade+0x720/0x720
[   33.804474]  ? lock_acquire+0x170/0x3c0
[   33.808438]  ? nilfs_segctor_confirm+0xe1/0x180
[   33.813120]  ? do_raw_spin_unlock+0x171/0x230
[   33.817622]  ? _raw_spin_unlock+0x29/0x40
[   33.821759]  nilfs_segctor_construct+0x764/0xae0
[   33.826681]  nilfs_segctor_thread+0x3cb/0xf50
[   33.831175]  ? nilfs_segctor_construct+0xae0/0xae0
[   33.836095]  ? __kthread_parkme+0x5d/0x1e0
[   33.840317]  ? wait_woken+0x250/0x250
[   33.844106]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[   33.848703]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   33.853790]  ? __kthread_parkme+0x133/0x1e0
[   33.858186]  ? nilfs_segctor_construct+0xae0/0xae0
[   33.863101]  kthread+0x33f/0x460
[   33.866456]  ? kthread_park+0x180/0x180
[   33.870435]  ret_from_fork+0x24/0x30
[   33.874491] Kernel Offset: disabled
[   33.878175] Rebooting in 86400 seconds..