[  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 '10.128.10.1' (ECDSA) to the list of known hosts.
syzkaller login: [   28.845949] IPVS: ftp: loaded support on port[0] = 21
executing program
[   28.947994] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0
[   28.957556] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[   28.964610] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16)
[   28.977882] Remounting filesystem read-only
[   28.982808] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0
[   28.992388] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16)
[   29.001138] NILFS (loop0): error -5 truncating bmap (ino=16)
[   29.012050] ------------[ cut here ]------------
[   29.016958] WARNING: CPU: 0 PID: 7969 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0
[   29.026651] Kernel panic - not syncing: panic_on_warn set ...
[   29.026651] 
[   29.034001] CPU: 0 PID: 7969 Comm: syz-executor194 Not tainted 4.14.295-syzkaller #0
[   29.041859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
[   29.051202] Call Trace:
[   29.053778]  dump_stack+0x1b2/0x281
[   29.057387]  panic+0x1f9/0x42d
[   29.060556]  ? add_taint.cold+0x16/0x16
[   29.064510]  ? account_page_dirtied+0x8df/0xbb0
[   29.069158]  ? account_page_dirtied+0x8df/0xbb0
[   29.073804]  __warn.cold+0x20/0x44
[   29.077328]  ? ist_end_non_atomic+0x10/0x10
[   29.081630]  ? account_page_dirtied+0x8df/0xbb0
[   29.086278]  report_bug+0x208/0x250
[   29.089889]  do_error_trap+0x195/0x2d0
[   29.093752]  ? math_error+0x2d0/0x2d0
[   29.097531]  ? deactivate_locked_super+0x6c/0xd0
[   29.102265]  ? deactivate_super+0x7f/0xa0
[   29.106394]  ? cleanup_mnt+0x186/0x2c0
[   29.110271]  ? trace_hardirqs_on+0x10/0x10
[   29.114488]  ? trace_hardirqs_on+0x10/0x10
[   29.118701]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   29.123526]  invalid_op+0x1b/0x40
[   29.126957] RIP: 0010:account_page_dirtied+0x8df/0xbb0
[   29.132206] RSP: 0018:ffff8880b37ef640 EFLAGS: 00010097
[   29.137546] RAX: ffff8880958f8680 RBX: ffff8880aec41480 RCX: 1ffffffff127a5d4
[   29.144795] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086
[   29.152042] RBP: ffff88808db2ab58 R08: ffffffff8ba5ddec R09: 0000000000001cc6
[   29.159296] R10: 0000000000000001 R11: ffff8880958f8680 R12: ffffea00026db680
[   29.166547] R13: ffff88808db2a9c8 R14: ffff88808db2a9c8 R15: ffffea00026db6a0
[   29.173809]  __set_page_dirty+0x77/0x2a0
[   29.177851]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.183285]  mark_buffer_dirty+0x307/0x480
[   29.187502]  nilfs_btree_propagate+0x3a3/0xc20
[   29.192068]  nilfs_bmap_propagate+0x73/0x160
[   29.196460]  nilfs_collect_dat_data+0x41/0xb0
[   29.200935]  nilfs_segctor_apply_buffers+0x191/0x450
[   29.206020]  ? nilfs_collect_file_bmap+0x70/0x70
[   29.210757]  nilfs_segctor_scan_file+0x366/0x630
[   29.215494]  ? nilfs_collect_file_data+0xb0/0xb0
[   29.220231]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.225661]  nilfs_segctor_do_construct+0x1420/0x78d0
[   29.230839]  ? nilfs_segctor_scan_file+0x630/0x630
[   29.235749]  ? lock_acquire+0x170/0x3f0
[   29.239702]  ? lock_downgrade+0x740/0x740
[   29.243830]  ? do_raw_spin_unlock+0x164/0x220
[   29.248306]  ? _raw_spin_unlock+0x29/0x40
[   29.252435]  nilfs_segctor_construct+0x6db/0x8e0
[   29.257171]  nilfs_detach_log_writer+0x398/0x980
[   29.261910]  ? nilfs_clean_segments+0x990/0x990
[   29.266559]  ? dispose_list+0x11c/0x1e0
[   29.270517]  ? wait_woken+0x230/0x230
[   29.274298]  ? dispose_list+0x1e0/0x1e0
[   29.278254]  nilfs_put_super+0x3f/0x190
[   29.282210]  ? nilfs_freeze+0xb0/0xb0
[   29.285990]  generic_shutdown_super+0x144/0x370
[   29.290662]  kill_block_super+0x95/0xe0
[   29.294624]  deactivate_locked_super+0x6c/0xd0
[   29.299196]  deactivate_super+0x7f/0xa0
[   29.303150]  cleanup_mnt+0x186/0x2c0
[   29.306847]  task_work_run+0x11f/0x190
[   29.310716]  do_exit+0xa44/0x2850
[   29.314151]  ? __do_page_fault+0x571/0xad0
[   29.318369]  ? mm_update_next_owner+0x5b0/0x5b0
[   29.323019]  ? lock_downgrade+0x740/0x740
[   29.327153]  do_group_exit+0x100/0x2e0
[   29.331023]  SyS_exit_group+0x19/0x20
[   29.334888]  ? do_group_exit+0x2e0/0x2e0
[   29.338929]  do_syscall_64+0x1d5/0x640
[   29.342803]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   29.347972] RIP: 0033:0x7f2ac0a1db89
[   29.351662] RSP: 002b:00007ffdc439ac18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   29.359349] RAX: ffffffffffffffda RBX: 00007f2ac0a95330 RCX: 00007f2ac0a1db89
[   29.366600] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   29.373854] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f2ac0a8fe40
[   29.381103] R10: 00007ffdc439ab30 R11: 0000000000000246 R12: 00007f2ac0a95330
[   29.388698] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   29.396334] Kernel Offset: disabled
[   29.400005] Rebooting in 86400 seconds..