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

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts.
syzkaller login: [   29.404353] IPVS: ftp: loaded support on port[0] = 21
executing program
[   29.466032] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[   29.479361] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0
[   29.489535] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16)
[   29.499797] Remounting filesystem read-only
[   29.505024] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0
[   29.514525] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16)
[   29.523611] NILFS (loop0): error -5 truncating bmap (ino=16)
[   29.534188] ------------[ cut here ]------------
[   29.539082] WARNING: CPU: 1 PID: 7965 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0
[   29.548776] Kernel panic - not syncing: panic_on_warn set ...
[   29.548776] 
[   29.556126] CPU: 1 PID: 7965 Comm: syz-executor357 Not tainted 4.14.295-syzkaller #0
[   29.563986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
[   29.573326] Call Trace:
[   29.575903]  dump_stack+0x1b2/0x281
[   29.579612]  panic+0x1f9/0x42d
[   29.582789]  ? add_taint.cold+0x16/0x16
[   29.586753]  ? account_page_dirtied+0x8df/0xbb0
[   29.591403]  ? account_page_dirtied+0x8df/0xbb0
[   29.596053]  __warn.cold+0x20/0x44
[   29.599572]  ? ist_end_non_atomic+0x10/0x10
[   29.603876]  ? account_page_dirtied+0x8df/0xbb0
[   29.608525]  report_bug+0x208/0x250
[   29.612134]  do_error_trap+0x195/0x2d0
[   29.616002]  ? math_error+0x2d0/0x2d0
[   29.619784]  ? deactivate_locked_super+0x6c/0xd0
[   29.624519]  ? deactivate_super+0x7f/0xa0
[   29.628644]  ? cleanup_mnt+0x186/0x2c0
[   29.632514]  ? trace_hardirqs_on+0x10/0x10
[   29.636730]  ? trace_hardirqs_on+0x10/0x10
[   29.640949]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   29.645775]  invalid_op+0x1b/0x40
[   29.649211] RIP: 0010:account_page_dirtied+0x8df/0xbb0
[   29.654465] RSP: 0018:ffff8880958cf640 EFLAGS: 00010097
[   29.659810] RAX: ffff8880b2c68400 RBX: ffff8880aec8c200 RCX: 1ffffffff127a5d4
[   29.667059] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086
[   29.674333] RBP: ffff88808df0cb58 R08: ffffffff8ba5df3c R09: 0000000000001cb6
[   29.681584] R10: 0000000000000001 R11: ffff8880b2c68400 R12: ffffea0002a7e580
[   29.688831] R13: ffff88808df0c9c8 R14: ffff88808df0c9c8 R15: ffffea0002a7e5a0
[   29.696093]  __set_page_dirty+0x77/0x2a0
[   29.700134]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.705566]  mark_buffer_dirty+0x307/0x480
[   29.709782]  nilfs_btree_propagate+0x3a3/0xc20
[   29.714349]  nilfs_bmap_propagate+0x73/0x160
[   29.718738]  nilfs_collect_dat_data+0x41/0xb0
[   29.723214]  nilfs_segctor_apply_buffers+0x191/0x450
[   29.728299]  ? nilfs_collect_file_bmap+0x70/0x70
[   29.733045]  nilfs_segctor_scan_file+0x366/0x630
[   29.737783]  ? nilfs_collect_file_data+0xb0/0xb0
[   29.742527]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.747957]  nilfs_segctor_do_construct+0x1420/0x78d0
[   29.753137]  ? nilfs_segctor_scan_file+0x630/0x630
[   29.758129]  ? lock_acquire+0x170/0x3f0
[   29.762081]  ? lock_downgrade+0x740/0x740
[   29.766215]  ? do_raw_spin_unlock+0x164/0x220
[   29.770696]  ? _raw_spin_unlock+0x29/0x40
[   29.774828]  nilfs_segctor_construct+0x6db/0x8e0
[   29.779569]  nilfs_detach_log_writer+0x398/0x980
[   29.784309]  ? nilfs_clean_segments+0x990/0x990
[   29.788962]  ? dispose_list+0x11c/0x1e0
[   29.792920]  ? evict_inodes+0x2cd/0x3a0
[   29.796875]  ? dispose_list+0x1e0/0x1e0
[   29.800831]  nilfs_put_super+0x3f/0x190
[   29.804786]  ? nilfs_freeze+0xb0/0xb0
[   29.808567]  generic_shutdown_super+0x144/0x370
[   29.813227]  kill_block_super+0x95/0xe0
[   29.817203]  deactivate_locked_super+0x6c/0xd0
[   29.821766]  deactivate_super+0x7f/0xa0
[   29.825719]  cleanup_mnt+0x186/0x2c0
[   29.829414]  task_work_run+0x11f/0x190
[   29.833282]  do_exit+0xa44/0x2850
[   29.836719]  ? __do_page_fault+0x571/0xad0
[   29.840934]  ? mm_update_next_owner+0x5b0/0x5b0
[   29.845586]  ? lock_downgrade+0x740/0x740
[   29.849719]  do_group_exit+0x100/0x2e0
[   29.853593]  SyS_exit_group+0x19/0x20
[   29.857373]  ? do_group_exit+0x2e0/0x2e0
[   29.861412]  do_syscall_64+0x1d5/0x640
[   29.865286]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   29.870458] RIP: 0033:0x7f6881684b89
[   29.874155] RSP: 002b:00007ffe447455d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   29.881842] RAX: ffffffffffffffda RBX: 00007f68816fc330 RCX: 00007f6881684b89
[   29.889095] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   29.896346] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f68816f6e40
[   29.903597] R10: 00007ffe447454f0 R11: 0000000000000246 R12: 00007f68816fc330
[   29.910847] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   29.918452] Kernel Offset: disabled
[   29.922127] Rebooting in 86400 seconds..