[ 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 '10.128.0.175' (ECDSA) to the list of known hosts. syzkaller login: [ 28.664191] IPVS: ftp: loaded support on port[0] = 21 executing program [ 28.799855] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.803199] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.820960] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.831446] Remounting filesystem read-only [ 28.836062] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.846425] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.856131] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.865896] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.875256] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.884995] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.895089] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.904833] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.914201] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.924181] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.933571] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.943323] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.952658] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.962403] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.971744] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.981820] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.991184] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.000945] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.009948] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.020323] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.029425] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.039417] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.048837] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.058609] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.067997] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.077752] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.087129] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.096852] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.106248] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.116285] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 29.125826] audit: type=1800 audit(1665768372.233:2): pid=7967 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor614" name="file3" dev="loop0" ino=16 res=0 [ 29.143281] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 29.152831] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 29.161396] NILFS (loop0): error -5 truncating bmap (ino=16) [ 29.181465] ------------[ cut here ]------------ [ 29.186334] WARNING: CPU: 1 PID: 7967 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 29.196289] Kernel panic - not syncing: panic_on_warn set ... [ 29.196289] [ 29.203629] CPU: 1 PID: 7967 Comm: syz-executor614 Not tainted 4.14.295-syzkaller #0 [ 29.211485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.220817] Call Trace: [ 29.223387] dump_stack+0x1b2/0x281 [ 29.226999] panic+0x1f9/0x42d [ 29.230169] ? add_taint.cold+0x16/0x16 [ 29.234126] ? account_page_dirtied+0x8df/0xbb0 [ 29.238782] ? account_page_dirtied+0x8df/0xbb0 [ 29.243438] __warn.cold+0x20/0x44 [ 29.246957] ? ist_end_non_atomic+0x10/0x10 [ 29.251257] ? account_page_dirtied+0x8df/0xbb0 [ 29.255909] report_bug+0x208/0x250 [ 29.259520] do_error_trap+0x195/0x2d0 [ 29.263412] ? math_error+0x2d0/0x2d0 [ 29.267285] ? deactivate_locked_super+0x6c/0xd0 [ 29.272034] ? deactivate_super+0x7f/0xa0 [ 29.276160] ? cleanup_mnt+0x186/0x2c0 [ 29.280030] ? trace_hardirqs_on+0x10/0x10 [ 29.284244] ? trace_hardirqs_on+0x10/0x10 [ 29.288473] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.293298] invalid_op+0x1b/0x40 [ 29.296729] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 29.301983] RSP: 0018:ffff888098027640 EFLAGS: 00010097 [ 29.307327] RAX: ffff888097c74180 RBX: ffff8880aec7a300 RCX: 1ffffffff127a5d4 [ 29.314576] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 29.321823] RBP: ffff88808dfc6b58 R08: ffffffff8ba5d36c R09: 0000000000001d20 [ 29.329076] R10: 0000000000000001 R11: ffff888097c74180 R12: ffffea0002afdac0 [ 29.336326] R13: ffff88808dfc69c8 R14: ffff88808dfc69c8 R15: ffffea0002afdae0 [ 29.343587] __set_page_dirty+0x77/0x2a0 [ 29.347627] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.353058] mark_buffer_dirty+0x307/0x480 [ 29.357273] nilfs_btree_propagate+0x3a3/0xc20 [ 29.361839] nilfs_bmap_propagate+0x73/0x160 [ 29.366228] nilfs_collect_dat_data+0x41/0xb0 [ 29.370702] nilfs_segctor_apply_buffers+0x191/0x450 [ 29.375786] ? nilfs_collect_file_bmap+0x70/0x70 [ 29.380521] nilfs_segctor_scan_file+0x366/0x630 [ 29.385257] ? nilfs_collect_file_data+0xb0/0xb0 [ 29.389993] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.395422] nilfs_segctor_do_construct+0x1420/0x78d0 [ 29.400604] ? nilfs_segctor_scan_file+0x630/0x630 [ 29.405511] ? lock_acquire+0x170/0x3f0 [ 29.409464] ? lock_downgrade+0x740/0x740 [ 29.413593] ? do_raw_spin_unlock+0x164/0x220 [ 29.418066] ? _raw_spin_unlock+0x29/0x40 [ 29.422192] nilfs_segctor_construct+0x6db/0x8e0 [ 29.426934] nilfs_detach_log_writer+0x398/0x980 [ 29.431672] ? nilfs_clean_segments+0x990/0x990 [ 29.436319] ? dispose_list+0x11c/0x1e0 [ 29.440277] ? wait_woken+0x230/0x230 [ 29.444056] ? dispose_list+0x1e0/0x1e0 [ 29.448008] nilfs_put_super+0x3f/0x190 [ 29.451996] ? nilfs_freeze+0xb0/0xb0 [ 29.455779] generic_shutdown_super+0x144/0x370 [ 29.460430] kill_block_super+0x95/0xe0 [ 29.464383] deactivate_locked_super+0x6c/0xd0 [ 29.468945] deactivate_super+0x7f/0xa0 [ 29.472900] cleanup_mnt+0x186/0x2c0 [ 29.476596] task_work_run+0x11f/0x190 [ 29.480476] do_exit+0xa44/0x2850 [ 29.483911] ? __do_page_fault+0x571/0xad0 [ 29.488127] ? mm_update_next_owner+0x5b0/0x5b0 [ 29.492775] ? lock_downgrade+0x740/0x740 [ 29.496907] do_group_exit+0x100/0x2e0 [ 29.500782] SyS_exit_group+0x19/0x20 [ 29.504650] ? do_group_exit+0x2e0/0x2e0 [ 29.508692] do_syscall_64+0x1d5/0x640 [ 29.512999] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.518173] RIP: 0033:0x7f0662b62b79 [ 29.521865] RSP: 002b:00007ffef7dd0098 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 29.529560] RAX: ffffffffffffffda RBX: 00007f0662bda330 RCX: 00007f0662b62b79 [ 29.536811] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 29.544057] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f0662bd4e40 [ 29.551305] R10: 00007ffef7dcffb0 R11: 0000000000000246 R12: 00007f0662bda330 [ 29.558555] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 29.566165] Kernel Offset: disabled [ 29.569842] Rebooting in 86400 seconds..