[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts.
syzkaller login: [   32.452442] IPVS: ftp: loaded support on port[0] = 21
executing program
[   32.520338] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[   32.534078] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0
[   32.545107] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16)
[   32.555926] Remounting filesystem read-only
[   32.560650] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0
[   32.570723] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16)
[   32.579796] NILFS (loop0): error -5 truncating bmap (ino=16)
[   32.590949] ------------[ cut here ]------------
[   32.595986] WARNING: CPU: 1 PID: 7973 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0
[   32.605687] Kernel panic - not syncing: panic_on_warn set ...
[   32.605687] 
[   32.613046] CPU: 1 PID: 7973 Comm: syz-executor222 Not tainted 4.14.295-syzkaller #0
[   32.620904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
[   32.630246] Call Trace:
[   32.632818]  dump_stack+0x1b2/0x281
[   32.636428]  panic+0x1f9/0x42d
[   32.639605]  ? add_taint.cold+0x16/0x16
[   32.643560]  ? account_page_dirtied+0x8df/0xbb0
[   32.648209]  ? account_page_dirtied+0x8df/0xbb0
[   32.652854]  __warn.cold+0x20/0x44
[   32.656375]  ? ist_end_non_atomic+0x10/0x10
[   32.660677]  ? account_page_dirtied+0x8df/0xbb0
[   32.665326]  report_bug+0x208/0x250
[   32.668932]  do_error_trap+0x195/0x2d0
[   32.672799]  ? math_error+0x2d0/0x2d0
[   32.676624]  ? deactivate_locked_super+0x6c/0xd0
[   32.681360]  ? deactivate_super+0x7f/0xa0
[   32.685490]  ? cleanup_mnt+0x186/0x2c0
[   32.689363]  ? trace_hardirqs_on+0x10/0x10
[   32.693577]  ? trace_hardirqs_on+0x10/0x10
[   32.697790]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.702615]  invalid_op+0x1b/0x40
[   32.706049] RIP: 0010:account_page_dirtied+0x8df/0xbb0
[   32.711302] RSP: 0018:ffff888095acf640 EFLAGS: 00010097
[   32.716644] RAX: ffff888095a883c0 RBX: ffff8880aece1480 RCX: 1ffffffff127a5d4
[   32.723892] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086
[   32.731142] RBP: ffff88808dedbb58 R08: ffffffff8ba5e08c R09: 0000000000001d28
[   32.738389] R10: 0000000000000001 R11: ffff888095a883c0 R12: ffffea000287b9c0
[   32.745641] R13: ffff88808dedb9c8 R14: ffff88808dedb9c8 R15: ffffea000287b9e0
[   32.752904]  __set_page_dirty+0x77/0x2a0
[   32.756947]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   32.762377]  mark_buffer_dirty+0x307/0x480
[   32.766611]  nilfs_btree_propagate+0x3a3/0xc20
[   32.771178]  nilfs_bmap_propagate+0x73/0x160
[   32.775566]  nilfs_collect_dat_data+0x41/0xb0
[   32.780042]  nilfs_segctor_apply_buffers+0x191/0x450
[   32.785126]  ? nilfs_collect_file_bmap+0x70/0x70
[   32.789862]  nilfs_segctor_scan_file+0x366/0x630
[   32.794597]  ? nilfs_collect_file_data+0xb0/0xb0
[   32.799333]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   32.804764]  nilfs_segctor_do_construct+0x1420/0x78d0
[   32.809941]  ? nilfs_segctor_scan_file+0x630/0x630
[   32.814849]  ? lock_acquire+0x170/0x3f0
[   32.818799]  ? lock_downgrade+0x740/0x740
[   32.822927]  ? do_raw_spin_unlock+0x164/0x220
[   32.827399]  ? _raw_spin_unlock+0x29/0x40
[   32.831532]  nilfs_segctor_construct+0x6db/0x8e0
[   32.836271]  nilfs_detach_log_writer+0x398/0x980
[   32.841012]  ? nilfs_clean_segments+0x990/0x990
[   32.845664]  ? dispose_list+0x11c/0x1e0
[   32.849620]  ? evict_inodes+0x2cd/0x3a0
[   32.853577]  ? dispose_list+0x1e0/0x1e0
[   32.857532]  nilfs_put_super+0x3f/0x190
[   32.861485]  ? nilfs_freeze+0xb0/0xb0
[   32.865274]  generic_shutdown_super+0x144/0x370
[   32.869922]  kill_block_super+0x95/0xe0
[   32.873876]  deactivate_locked_super+0x6c/0xd0
[   32.878439]  deactivate_super+0x7f/0xa0
[   32.882396]  cleanup_mnt+0x186/0x2c0
[   32.886092]  task_work_run+0x11f/0x190
[   32.889964]  do_exit+0xa44/0x2850
[   32.893403]  ? __do_page_fault+0x571/0xad0
[   32.897626]  ? mm_update_next_owner+0x5b0/0x5b0
[   32.902275]  ? lock_downgrade+0x740/0x740
[   32.906406]  do_group_exit+0x100/0x2e0
[   32.910275]  SyS_exit_group+0x19/0x20
[   32.914065]  ? do_group_exit+0x2e0/0x2e0
[   32.918107]  do_syscall_64+0x1d5/0x640
[   32.921977]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   32.927154] RIP: 0033:0x7ff9d05b7b89
[   32.930844] RSP: 002b:00007ffd3dd76218 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   32.938531] RAX: ffffffffffffffda RBX: 00007ff9d062f330 RCX: 00007ff9d05b7b89
[   32.945781] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   32.953028] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007ff9d0629e40
[   32.960276] R10: 00007ffd3dd76130 R11: 0000000000000246 R12: 00007ff9d062f330
[   32.967526] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   32.975138] Kernel Offset: disabled
[   32.978809] Rebooting in 86400 seconds..