Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.254' (ECDSA) to the list of known hosts. syzkaller login: [ 27.524181] IPVS: ftp: loaded support on port[0] = 21 executing program [ 27.599394] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 27.614492] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 27.625065] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 27.635180] Remounting filesystem read-only [ 27.640508] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 27.650402] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 27.659286] NILFS (loop0): error -5 truncating bmap (ino=16) [ 27.670095] ------------[ cut here ]------------ [ 27.674978] WARNING: CPU: 1 PID: 7998 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 27.684669] Kernel panic - not syncing: panic_on_warn set ... [ 27.684669] [ 27.692017] CPU: 1 PID: 7998 Comm: syz-executor216 Not tainted 4.14.295-syzkaller #0 [ 27.699874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.709208] Call Trace: [ 27.711782] dump_stack+0x1b2/0x281 [ 27.715390] panic+0x1f9/0x42d [ 27.718567] ? add_taint.cold+0x16/0x16 [ 27.722525] ? account_page_dirtied+0x8df/0xbb0 [ 27.727174] ? account_page_dirtied+0x8df/0xbb0 [ 27.731822] __warn.cold+0x20/0x44 [ 27.735344] ? ist_end_non_atomic+0x10/0x10 [ 27.739651] ? account_page_dirtied+0x8df/0xbb0 [ 27.744302] report_bug+0x208/0x250 [ 27.747917] do_error_trap+0x195/0x2d0 [ 27.751785] ? math_error+0x2d0/0x2d0 [ 27.755567] ? deactivate_locked_super+0x6c/0xd0 [ 27.760299] ? deactivate_super+0x7f/0xa0 [ 27.764430] ? cleanup_mnt+0x186/0x2c0 [ 27.768297] ? trace_hardirqs_on+0x10/0x10 [ 27.772513] ? trace_hardirqs_on+0x10/0x10 [ 27.776727] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.781551] invalid_op+0x1b/0x40 [ 27.784984] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 27.790233] RSP: 0018:ffff8880a618f640 EFLAGS: 00010097 [ 27.795576] RAX: ffff888095860580 RBX: ffff8880af374b80 RCX: 1ffffffff127a5d4 [ 27.802823] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 27.810074] RBP: ffff88808df46b58 R08: ffffffff8ba5ddec R09: 0000000000001cd0 [ 27.817337] R10: 0000000000000001 R11: ffff888095860580 R12: ffffea0002a6d740 [ 27.824586] R13: ffff88808df469c8 R14: ffff88808df469c8 R15: ffffea0002a6d760 [ 27.831847] __set_page_dirty+0x77/0x2a0 [ 27.835889] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.841324] mark_buffer_dirty+0x307/0x480 [ 27.845539] nilfs_btree_propagate+0x3a3/0xc20 [ 27.850104] nilfs_bmap_propagate+0x73/0x160 [ 27.854494] nilfs_collect_dat_data+0x41/0xb0 [ 27.858973] nilfs_segctor_apply_buffers+0x191/0x450 [ 27.864057] ? nilfs_collect_file_bmap+0x70/0x70 [ 27.868796] nilfs_segctor_scan_file+0x366/0x630 [ 27.873532] ? nilfs_collect_file_data+0xb0/0xb0 [ 27.878270] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.883700] nilfs_segctor_do_construct+0x1420/0x78d0 [ 27.888893] ? nilfs_segctor_scan_file+0x630/0x630 [ 27.893811] ? lock_acquire+0x170/0x3f0 [ 27.897772] ? lock_downgrade+0x740/0x740 [ 27.901920] ? do_raw_spin_unlock+0x164/0x220 [ 27.906407] ? _raw_spin_unlock+0x29/0x40 [ 27.910549] nilfs_segctor_construct+0x6db/0x8e0 [ 27.915288] nilfs_detach_log_writer+0x398/0x980 [ 27.920031] ? nilfs_clean_segments+0x990/0x990 [ 27.924697] ? dispose_list+0x11c/0x1e0 [ 27.928653] ? wait_woken+0x230/0x230 [ 27.932438] ? dispose_list+0x1e0/0x1e0 [ 27.936394] nilfs_put_super+0x3f/0x190 [ 27.940347] ? nilfs_freeze+0xb0/0xb0 [ 27.944127] generic_shutdown_super+0x144/0x370 [ 27.948780] kill_block_super+0x95/0xe0 [ 27.952736] deactivate_locked_super+0x6c/0xd0 [ 27.957296] deactivate_super+0x7f/0xa0 [ 27.961250] cleanup_mnt+0x186/0x2c0 [ 27.964948] task_work_run+0x11f/0x190 [ 27.968818] do_exit+0xa44/0x2850 [ 27.972254] ? __do_page_fault+0x571/0xad0 [ 27.976467] ? mm_update_next_owner+0x5b0/0x5b0 [ 27.981115] ? lock_downgrade+0x740/0x740 [ 27.985248] do_group_exit+0x100/0x2e0 [ 27.989116] SyS_exit_group+0x19/0x20 [ 27.992898] ? do_group_exit+0x2e0/0x2e0 [ 27.996940] do_syscall_64+0x1d5/0x640 [ 28.000810] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.005978] RIP: 0033:0x7fb9e0c63b99 [ 28.009668] RSP: 002b:00007ffc65848e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.017356] RAX: ffffffffffffffda RBX: 00007fb9e0cdc330 RCX: 00007fb9e0c63b99 [ 28.024605] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 28.031852] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fb9e0cd6e40 [ 28.039099] R10: 00007ffc65848d80 R11: 0000000000000246 R12: 00007fb9e0cdc330 [ 28.046347] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 28.053949] Kernel Offset: disabled [ 28.057631] Rebooting in 86400 seconds..