Warning: Permanently added '10.128.1.37' (ECDSA) to the list of known hosts.
executing program
[   29.049368] IPVS: ftp: loaded support on port[0] = 21
[   29.081400] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   29.101021] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[   29.127180] ------------[ cut here ]------------
[   29.132038] WARNING: CPU: 1 PID: 8034 at include/linux/backing-dev.h:334 account_page_dirtied+0x7c7/0xa20
[   29.141716] Kernel panic - not syncing: panic_on_warn set ...
[   29.141716] 
[   29.149063] CPU: 1 PID: 8034 Comm: segctord Not tainted 4.14.204-syzkaller #0
[   29.156307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.165632] Call Trace:
[   29.168197]  dump_stack+0x1b2/0x283
[   29.171801]  panic+0x1f9/0x42d
[   29.174974]  ? add_taint.cold+0x16/0x16
[   29.178925]  ? account_page_dirtied+0x7c7/0xa20
[   29.183571]  ? account_page_dirtied+0x7c7/0xa20
[   29.188215]  __warn.cold+0x20/0x4b
[   29.191819]  ? ist_end_non_atomic+0x10/0x10
[   29.196113]  ? account_page_dirtied+0x7c7/0xa20
[   29.200753]  report_bug+0x208/0x249
[   29.204365]  do_error_trap+0x195/0x2d0
[   29.208229]  ? math_error+0x2d0/0x2d0
[   29.212027]  ? gfp_pfmemalloc_allowed+0x150/0x150
[   29.216846]  ? trace_hardirqs_on+0x10/0x10
[   29.221055]  ? trace_hardirqs_on+0x10/0x10
[   29.225266]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   29.230096]  invalid_op+0x1b/0x40
[   29.233542] RIP: 0010:account_page_dirtied+0x7c7/0xa20
[   29.238804] RSP: 0018:ffff8880b35d7908 EFLAGS: 00010097
[   29.244144] RAX: ffff8880b2b0c300 RBX: ffff8880af390340 RCX: 1ffffffff1279f18
[   29.251397] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000082
[   29.258642] RBP: ffff88808df7eb58 R08: ffffffff8ba4519c R09: 0000000000001d6e
[   29.265887] R10: 0000000000000001 R11: ffff8880b2b0c300 R12: ffffea0002aa8700
[   29.273131] R13: ffff88808df7e9c8 R14: ffff88808df7e9c8 R15: ffffea0002aa8720
[   29.280397]  ? account_page_dirtied+0x7c7/0xa20
[   29.285043]  __set_page_dirty+0x77/0x2a0
[   29.289080]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.294518]  mark_buffer_dirty+0x307/0x480
[   29.298737]  nilfs_btree_propagate+0x3a3/0xc20
[   29.303297]  nilfs_bmap_propagate+0x73/0x160
[   29.307690]  nilfs_collect_dat_data+0x41/0xb0
[   29.312159]  nilfs_segctor_apply_buffers+0x191/0x450
[   29.317238]  ? nilfs_collect_file_bmap+0x70/0x70
[   29.321970]  nilfs_segctor_scan_file+0x366/0x630
[   29.326702]  ? nilfs_collect_file_data+0xb0/0xb0
[   29.331435]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.336876]  nilfs_segctor_do_construct+0x1426/0x7910
[   29.342053]  ? nilfs_segctor_scan_file+0x630/0x630
[   29.347042]  ? lock_acquire+0x170/0x3f0
[   29.350992]  ? lock_downgrade+0x740/0x740
[   29.355116]  ? do_raw_spin_unlock+0x164/0x220
[   29.359586]  ? _raw_spin_unlock+0x29/0x40
[   29.363708]  nilfs_segctor_construct+0x6db/0x8e0
[   29.368441]  nilfs_segctor_thread+0x3ad/0xdb0
[   29.372924]  ? nilfs_segctor_construct+0x8e0/0x8e0
[   29.377827]  ? __schedule+0x893/0x1de0
[   29.381687]  ? kthread+0x287/0x420
[   29.385206]  ? wait_woken+0x230/0x230
[   29.388978]  ? _raw_spin_unlock_irqrestore+0x79/0xe0
[   29.394054]  ? nilfs_segctor_construct+0x8e0/0x8e0
[   29.399002]  kthread+0x30d/0x420
[   29.402348]  ? kthread_create_on_node+0xd0/0xd0
[   29.407002]  ret_from_fork+0x24/0x30
[   29.411557] Kernel Offset: disabled
[   29.415229] Rebooting in 86400 seconds..