[ 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 '10.128.10.56' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.008597] IPVS: ftp: loaded support on port[0] = 21 [ 32.072721] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 32.087720] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 32.098021] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 32.109099] Remounting filesystem read-only [ 32.113943] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 32.124278] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 32.133328] NILFS (loop0): error -5 truncating bmap (ino=16) [ 32.144619] ------------[ cut here ]------------ [ 32.149556] WARNING: CPU: 1 PID: 7988 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 32.159270] Kernel panic - not syncing: panic_on_warn set ... [ 32.159270] [ 32.166893] CPU: 1 PID: 7988 Comm: syz-executor310 Not tainted 4.14.295-syzkaller #0 [ 32.174765] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 32.184101] Call Trace: [ 32.186680] dump_stack+0x1b2/0x281 [ 32.190293] panic+0x1f9/0x42d [ 32.193514] ? add_taint.cold+0x16/0x16 [ 32.197494] ? account_page_dirtied+0x8df/0xbb0 [ 32.202149] ? account_page_dirtied+0x8df/0xbb0 [ 32.206801] __warn.cold+0x20/0x44 [ 32.210331] ? ist_end_non_atomic+0x10/0x10 [ 32.214636] ? account_page_dirtied+0x8df/0xbb0 [ 32.219292] report_bug+0x208/0x250 [ 32.222914] do_error_trap+0x195/0x2d0 [ 32.226786] ? math_error+0x2d0/0x2d0 [ 32.230576] ? deactivate_locked_super+0x6c/0xd0 [ 32.235317] ? deactivate_super+0x7f/0xa0 [ 32.239455] ? cleanup_mnt+0x186/0x2c0 [ 32.243332] ? trace_hardirqs_on+0x10/0x10 [ 32.247548] ? trace_hardirqs_on+0x10/0x10 [ 32.251766] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.256594] invalid_op+0x1b/0x40 [ 32.260034] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 32.265289] RSP: 0018:ffff8880b3d7f640 EFLAGS: 00010097 [ 32.270637] RAX: ffff8880b3bac440 RBX: ffff8880aecceb80 RCX: 1ffffffff127a5d4 [ 32.277892] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 32.285146] RBP: ffff88808e331b58 R08: ffffffff8ba5db4c R09: 0000000000001ccc [ 32.292411] R10: 0000000000000001 R11: ffff8880b3bac440 R12: ffffea0002c15340 [ 32.299705] R13: ffff88808e3319c8 R14: ffff88808e3319c8 R15: ffffea0002c15360 [ 32.306989] __set_page_dirty+0x77/0x2a0 [ 32.311034] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 32.316470] mark_buffer_dirty+0x307/0x480 [ 32.320691] nilfs_btree_propagate+0x3a3/0xc20 [ 32.325269] nilfs_bmap_propagate+0x73/0x160 [ 32.329664] nilfs_collect_dat_data+0x41/0xb0 [ 32.334228] nilfs_segctor_apply_buffers+0x191/0x450 [ 32.339313] ? nilfs_collect_file_bmap+0x70/0x70 [ 32.344060] nilfs_segctor_scan_file+0x366/0x630 [ 32.348808] ? nilfs_collect_file_data+0xb0/0xb0 [ 32.353554] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 32.358989] nilfs_segctor_do_construct+0x1420/0x78d0 [ 32.364173] ? nilfs_segctor_scan_file+0x630/0x630 [ 32.369091] ? lock_acquire+0x170/0x3f0 [ 32.373057] ? lock_downgrade+0x740/0x740 [ 32.377196] ? do_raw_spin_unlock+0x164/0x220 [ 32.381682] ? _raw_spin_unlock+0x29/0x40 [ 32.385822] nilfs_segctor_construct+0x6db/0x8e0 [ 32.390562] nilfs_detach_log_writer+0x398/0x980 [ 32.395480] ? nilfs_clean_segments+0x990/0x990 [ 32.400135] ? dispose_list+0x11c/0x1e0 [ 32.404094] ? evict_inodes+0x2cd/0x3a0 [ 32.408052] ? dispose_list+0x1e0/0x1e0 [ 32.412009] nilfs_put_super+0x3f/0x190 [ 32.415968] ? nilfs_freeze+0xb0/0xb0 [ 32.419756] generic_shutdown_super+0x144/0x370 [ 32.424423] kill_block_super+0x95/0xe0 [ 32.428387] deactivate_locked_super+0x6c/0xd0 [ 32.432955] deactivate_super+0x7f/0xa0 [ 32.436916] cleanup_mnt+0x186/0x2c0 [ 32.440613] task_work_run+0x11f/0x190 [ 32.444487] do_exit+0xa44/0x2850 [ 32.448016] ? __do_page_fault+0x571/0xad0 [ 32.452238] ? mm_update_next_owner+0x5b0/0x5b0 [ 32.456892] ? lock_downgrade+0x740/0x740 [ 32.461027] do_group_exit+0x100/0x2e0 [ 32.464900] SyS_exit_group+0x19/0x20 [ 32.468688] ? do_group_exit+0x2e0/0x2e0 [ 32.472734] do_syscall_64+0x1d5/0x640 [ 32.476608] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 32.481800] RIP: 0033:0x7f2f8f965b89 [ 32.485509] RSP: 002b:00007fffac6fe678 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 32.493207] RAX: ffffffffffffffda RBX: 00007f2f8f9dd330 RCX: 00007f2f8f965b89 [ 32.500480] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 32.507738] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f2f8f9d7e40 [ 32.514991] R10: 00007fffac6fe590 R11: 0000000000000246 R12: 00007f2f8f9dd330 [ 32.522245] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 32.529950] Kernel Offset: disabled [ 32.533720] Rebooting in 86400 seconds..