[ 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 '10.128.10.21' (ECDSA) to the list of known hosts. syzkaller login: [ 35.841080] IPVS: ftp: loaded support on port[0] = 21 executing program [ 35.903363] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 35.906788] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 35.922936] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 35.932996] Remounting filesystem read-only [ 35.937696] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 35.947209] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 35.955797] NILFS (loop0): error -5 truncating bmap (ino=16) [ 35.971931] ------------[ cut here ]------------ [ 35.976807] WARNING: CPU: 0 PID: 7981 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 35.986494] Kernel panic - not syncing: panic_on_warn set ... [ 35.986494] [ 35.993849] CPU: 0 PID: 7981 Comm: syz-executor267 Not tainted 4.14.295-syzkaller #0 [ 36.001715] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.011061] Call Trace: [ 36.013645] dump_stack+0x1b2/0x281 [ 36.017257] panic+0x1f9/0x42d [ 36.020430] ? add_taint.cold+0x16/0x16 [ 36.024388] ? account_page_dirtied+0x8df/0xbb0 [ 36.029041] ? account_page_dirtied+0x8df/0xbb0 [ 36.033691] __warn.cold+0x20/0x44 [ 36.037212] ? ist_end_non_atomic+0x10/0x10 [ 36.041515] ? account_page_dirtied+0x8df/0xbb0 [ 36.046164] report_bug+0x208/0x250 [ 36.049775] do_error_trap+0x195/0x2d0 [ 36.053640] ? math_error+0x2d0/0x2d0 [ 36.057563] ? deactivate_locked_super+0x6c/0xd0 [ 36.062320] ? deactivate_super+0x7f/0xa0 [ 36.066454] ? cleanup_mnt+0x186/0x2c0 [ 36.070323] ? trace_hardirqs_on+0x10/0x10 [ 36.074610] ? trace_hardirqs_on+0x10/0x10 [ 36.078848] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.083680] invalid_op+0x1b/0x40 [ 36.087119] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 36.092370] RSP: 0018:ffff88809599f640 EFLAGS: 00010097 [ 36.097714] RAX: ffff88809591a480 RBX: ffff8880af380240 RCX: 1ffffffff127a5d4 [ 36.104959] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 36.112204] RBP: ffff88808dfb6b58 R08: ffffffff8ba5d9fc R09: 0000000000001cbc [ 36.119451] R10: 0000000000000001 R11: ffff88809591a480 R12: ffffea0002b9e8c0 [ 36.126696] R13: ffff88808dfb69c8 R14: ffff88808dfb69c8 R15: ffffea0002b9e8e0 [ 36.133957] __set_page_dirty+0x77/0x2a0 [ 36.137997] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 36.143425] mark_buffer_dirty+0x307/0x480 [ 36.147637] nilfs_btree_propagate+0x3a3/0xc20 [ 36.152201] nilfs_bmap_propagate+0x73/0x160 [ 36.156588] nilfs_collect_dat_data+0x41/0xb0 [ 36.161060] nilfs_segctor_apply_buffers+0x191/0x450 [ 36.166141] ? nilfs_collect_file_bmap+0x70/0x70 [ 36.170873] nilfs_segctor_scan_file+0x366/0x630 [ 36.175609] ? nilfs_collect_file_data+0xb0/0xb0 [ 36.180343] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 36.186498] nilfs_segctor_do_construct+0x1420/0x78d0 [ 36.192769] ? nilfs_segctor_scan_file+0x630/0x630 [ 36.197675] ? lock_acquire+0x170/0x3f0 [ 36.201626] ? lock_downgrade+0x740/0x740 [ 36.205752] ? do_raw_spin_unlock+0x164/0x220 [ 36.210229] ? _raw_spin_unlock+0x29/0x40 [ 36.214357] nilfs_segctor_construct+0x6db/0x8e0 [ 36.219094] nilfs_detach_log_writer+0x398/0x980 [ 36.223832] ? nilfs_clean_segments+0x990/0x990 [ 36.228485] ? dispose_list+0x11c/0x1e0 [ 36.232441] ? wait_woken+0x230/0x230 [ 36.236221] ? dispose_list+0x1e0/0x1e0 [ 36.240179] nilfs_put_super+0x3f/0x190 [ 36.244133] ? nilfs_freeze+0xb0/0xb0 [ 36.247912] generic_shutdown_super+0x144/0x370 [ 36.252564] kill_block_super+0x95/0xe0 [ 36.256514] deactivate_locked_super+0x6c/0xd0 [ 36.261080] deactivate_super+0x7f/0xa0 [ 36.265047] cleanup_mnt+0x186/0x2c0 [ 36.268739] task_work_run+0x11f/0x190 [ 36.272610] do_exit+0xa44/0x2850 [ 36.276043] ? __do_page_fault+0x571/0xad0 [ 36.280257] ? mm_update_next_owner+0x5b0/0x5b0 [ 36.284901] ? lock_downgrade+0x740/0x740 [ 36.289029] do_group_exit+0x100/0x2e0 [ 36.292895] SyS_exit_group+0x19/0x20 [ 36.296672] ? do_group_exit+0x2e0/0x2e0 [ 36.300707] do_syscall_64+0x1d5/0x640 [ 36.304574] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.309743] RIP: 0033:0x7f21554d0b99 [ 36.313433] RSP: 002b:00007fff387a2bd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 36.321118] RAX: ffffffffffffffda RBX: 00007f2155548330 RCX: 00007f21554d0b99 [ 36.328363] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 36.335611] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f2155542e40 [ 36.342866] R10: 00007fff387a2af0 R11: 0000000000000246 R12: 00007f2155548330 [ 36.350115] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 36.357710] Kernel Offset: disabled [ 36.361379] Rebooting in 86400 seconds..