Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.323423] IPVS: ftp: loaded support on port[0] = 21 [ 37.382168] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 37.386771] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 37.401533] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 37.411261] Remounting filesystem read-only [ 37.417999] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 37.427808] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 37.436661] NILFS (loop0): error -5 truncating bmap (ino=16) [ 37.447705] ------------[ cut here ]------------ [ 37.452589] WARNING: CPU: 1 PID: 8015 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 37.462281] Kernel panic - not syncing: panic_on_warn set ... [ 37.462281] [ 37.469627] CPU: 1 PID: 8015 Comm: syz-executor241 Not tainted 4.14.295-syzkaller #0 [ 37.477572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 37.486903] Call Trace: [ 37.489479] dump_stack+0x1b2/0x281 [ 37.493088] panic+0x1f9/0x42d [ 37.496268] ? add_taint.cold+0x16/0x16 [ 37.500246] ? account_page_dirtied+0x8df/0xbb0 [ 37.504898] ? account_page_dirtied+0x8df/0xbb0 [ 37.509548] __warn.cold+0x20/0x44 [ 37.513069] ? ist_end_non_atomic+0x10/0x10 [ 37.517373] ? account_page_dirtied+0x8df/0xbb0 [ 37.522026] report_bug+0x208/0x250 [ 37.525635] do_error_trap+0x195/0x2d0 [ 37.529505] ? math_error+0x2d0/0x2d0 [ 37.533291] ? deactivate_locked_super+0x6c/0xd0 [ 37.538028] ? deactivate_super+0x7f/0xa0 [ 37.542156] ? cleanup_mnt+0x186/0x2c0 [ 37.546023] ? trace_hardirqs_on+0x10/0x10 [ 37.550238] ? trace_hardirqs_on+0x10/0x10 [ 37.554457] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.559283] invalid_op+0x1b/0x40 [ 37.562722] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 37.567975] RSP: 0018:ffff888095aaf640 EFLAGS: 00010097 [ 37.573318] RAX: ffff8880b3868280 RBX: ffff8880aec66440 RCX: 1ffffffff127a5d4 [ 37.580568] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 37.587816] RBP: ffff88808df86b58 R08: ffffffff8ba5db4c R09: 0000000000001cde [ 37.595065] R10: 0000000000000001 R11: ffff8880b3868280 R12: ffffea00026da400 [ 37.602332] R13: ffff88808df869c8 R14: ffff88808df869c8 R15: ffffea00026da420 [ 37.609598] __set_page_dirty+0x77/0x2a0 [ 37.613643] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.619074] mark_buffer_dirty+0x307/0x480 [ 37.623294] nilfs_btree_propagate+0x3a3/0xc20 [ 37.627860] nilfs_bmap_propagate+0x73/0x160 [ 37.632253] nilfs_collect_dat_data+0x41/0xb0 [ 37.636729] nilfs_segctor_apply_buffers+0x191/0x450 [ 37.641816] ? nilfs_collect_file_bmap+0x70/0x70 [ 37.646552] nilfs_segctor_scan_file+0x366/0x630 [ 37.651291] ? nilfs_collect_file_data+0xb0/0xb0 [ 37.656031] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.661464] nilfs_segctor_do_construct+0x1420/0x78d0 [ 37.666642] ? nilfs_segctor_scan_file+0x630/0x630 [ 37.671552] ? lock_acquire+0x170/0x3f0 [ 37.675506] ? lock_downgrade+0x740/0x740 [ 37.679636] ? do_raw_spin_unlock+0x164/0x220 [ 37.684114] ? _raw_spin_unlock+0x29/0x40 [ 37.688244] nilfs_segctor_construct+0x6db/0x8e0 [ 37.692985] nilfs_detach_log_writer+0x398/0x980 [ 37.697722] ? nilfs_clean_segments+0x990/0x990 [ 37.702373] ? dispose_list+0x11c/0x1e0 [ 37.706329] ? evict_inodes+0x2cd/0x3a0 [ 37.710289] ? dispose_list+0x1e0/0x1e0 [ 37.714247] nilfs_put_super+0x3f/0x190 [ 37.718203] ? nilfs_freeze+0xb0/0xb0 [ 37.721982] generic_shutdown_super+0x144/0x370 [ 37.726629] kill_block_super+0x95/0xe0 [ 37.730584] deactivate_locked_super+0x6c/0xd0 [ 37.735146] deactivate_super+0x7f/0xa0 [ 37.739108] cleanup_mnt+0x186/0x2c0 [ 37.742807] task_work_run+0x11f/0x190 [ 37.746676] do_exit+0xa44/0x2850 [ 37.750123] ? __do_page_fault+0x571/0xad0 [ 37.754338] ? mm_update_next_owner+0x5b0/0x5b0 [ 37.758987] ? lock_downgrade+0x740/0x740 [ 37.763121] do_group_exit+0x100/0x2e0 [ 37.766993] SyS_exit_group+0x19/0x20 [ 37.770774] ? do_group_exit+0x2e0/0x2e0 [ 37.774817] do_syscall_64+0x1d5/0x640 [ 37.778691] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.783860] RIP: 0033:0x7fb6b445db89 [ 37.787552] RSP: 002b:00007ffe0c2ce5a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 37.795242] RAX: ffffffffffffffda RBX: 00007fb6b44d5330 RCX: 00007fb6b445db89 [ 37.802492] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 37.809744] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fb6b44cfe40 [ 37.816997] R10: 00007ffe0c2ce4c0 R11: 0000000000000246 R12: 00007fb6b44d5330 [ 37.824246] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 37.831936] Kernel Offset: disabled [ 37.835625] Rebooting in 86400 seconds..