Warning: Permanently added '10.128.0.130' (ECDSA) to the list of known hosts. syzkaller login: [ 28.204467] IPVS: ftp: loaded support on port[0] = 21 executing program [ 28.280174] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.283251] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.304537] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.315076] Remounting filesystem read-only [ 28.319718] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.329789] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 28.339046] NILFS (loop0): error -5 truncating bmap (ino=16) [ 28.355784] ------------[ cut here ]------------ [ 28.360658] WARNING: CPU: 0 PID: 7967 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 28.370435] Kernel panic - not syncing: panic_on_warn set ... [ 28.370435] [ 28.377783] CPU: 0 PID: 7967 Comm: syz-executor337 Not tainted 4.14.295-syzkaller #0 [ 28.385644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.394979] Call Trace: [ 28.397550] dump_stack+0x1b2/0x281 [ 28.401159] panic+0x1f9/0x42d [ 28.404356] ? add_taint.cold+0x16/0x16 [ 28.408316] ? account_page_dirtied+0x8df/0xbb0 [ 28.412969] ? account_page_dirtied+0x8df/0xbb0 [ 28.417625] __warn.cold+0x20/0x44 [ 28.421148] ? ist_end_non_atomic+0x10/0x10 [ 28.425475] ? account_page_dirtied+0x8df/0xbb0 [ 28.430146] report_bug+0x208/0x250 [ 28.433753] do_error_trap+0x195/0x2d0 [ 28.437621] ? math_error+0x2d0/0x2d0 [ 28.441404] ? deactivate_locked_super+0x6c/0xd0 [ 28.446147] ? deactivate_super+0x7f/0xa0 [ 28.450273] ? cleanup_mnt+0x186/0x2c0 [ 28.454144] ? trace_hardirqs_on+0x10/0x10 [ 28.458365] ? trace_hardirqs_on+0x10/0x10 [ 28.462595] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.467419] invalid_op+0x1b/0x40 [ 28.470856] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 28.476106] RSP: 0018:ffff8880b368f640 EFLAGS: 00010097 [ 28.481451] RAX: ffff8880b5742080 RBX: ffff8880af3c8bc0 RCX: 1ffffffff127a5d4 [ 28.488699] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 28.495947] RBP: ffff88808df21b58 R08: ffffffff8ba5ddec R09: 0000000000001cf6 [ 28.503195] R10: 0000000000000001 R11: ffff8880b5742080 R12: ffffea0002bd2f00 [ 28.510444] R13: ffff88808df219c8 R14: ffff88808df219c8 R15: ffffea0002bd2f20 [ 28.517710] __set_page_dirty+0x77/0x2a0 [ 28.521751] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.527188] mark_buffer_dirty+0x307/0x480 [ 28.531403] nilfs_btree_propagate+0x3a3/0xc20 [ 28.535967] nilfs_bmap_propagate+0x73/0x160 [ 28.540441] nilfs_collect_dat_data+0x41/0xb0 [ 28.545089] nilfs_segctor_apply_buffers+0x191/0x450 [ 28.550170] ? nilfs_collect_file_bmap+0x70/0x70 [ 28.554911] nilfs_segctor_scan_file+0x366/0x630 [ 28.559647] ? nilfs_collect_file_data+0xb0/0xb0 [ 28.564383] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.569811] nilfs_segctor_do_construct+0x1420/0x78d0 [ 28.574989] ? nilfs_segctor_scan_file+0x630/0x630 [ 28.579897] ? lock_acquire+0x170/0x3f0 [ 28.583852] ? lock_downgrade+0x740/0x740 [ 28.587980] ? do_raw_spin_unlock+0x164/0x220 [ 28.592453] ? _raw_spin_unlock+0x29/0x40 [ 28.596581] nilfs_segctor_construct+0x6db/0x8e0 [ 28.601319] nilfs_detach_log_writer+0x398/0x980 [ 28.606057] ? nilfs_clean_segments+0x990/0x990 [ 28.610705] ? dispose_list+0x11c/0x1e0 [ 28.614662] ? wait_woken+0x230/0x230 [ 28.618443] ? dispose_list+0x1e0/0x1e0 [ 28.622398] nilfs_put_super+0x3f/0x190 [ 28.626352] ? nilfs_freeze+0xb0/0xb0 [ 28.630134] generic_shutdown_super+0x144/0x370 [ 28.634786] kill_block_super+0x95/0xe0 [ 28.638740] deactivate_locked_super+0x6c/0xd0 [ 28.643303] deactivate_super+0x7f/0xa0 [ 28.647258] cleanup_mnt+0x186/0x2c0 [ 28.650972] task_work_run+0x11f/0x190 [ 28.654843] do_exit+0xa44/0x2850 [ 28.658279] ? __do_page_fault+0x571/0xad0 [ 28.662493] ? mm_update_next_owner+0x5b0/0x5b0 [ 28.667160] ? lock_downgrade+0x740/0x740 [ 28.671289] do_group_exit+0x100/0x2e0 [ 28.675158] SyS_exit_group+0x19/0x20 [ 28.678935] ? do_group_exit+0x2e0/0x2e0 [ 28.682975] do_syscall_64+0x1d5/0x640 [ 28.686871] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.692051] RIP: 0033:0x7fec20c9ab89 [ 28.695764] RSP: 002b:00007ffcfc4d2938 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.703666] RAX: ffffffffffffffda RBX: 00007fec20d12330 RCX: 00007fec20c9ab89 [ 28.710942] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 28.718194] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fec20d0ce40 [ 28.725445] R10: 00007ffcfc4d2850 R11: 0000000000000246 R12: 00007fec20d12330 [ 28.732695] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 28.740312] Kernel Offset: disabled [ 28.743988] Rebooting in 86400 seconds..