[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts. syzkaller login: [ 31.434301] IPVS: ftp: loaded support on port[0] = 21 executing program [ 31.562511] F2FS-fs (loop0): Found nat_bits in checkpoint [ 31.593446] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5 [ 31.659823] ------------[ cut here ]------------ [ 31.664627] kernel BUG at fs/f2fs/node.c:2780! [ 31.669370] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 31.674715] Modules linked in: [ 31.677883] CPU: 0 PID: 7981 Comm: syz-executor361 Not tainted 4.14.304-syzkaller #0 [ 31.685908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 31.695251] task: ffff8880b57664c0 task.stack: ffff888095960000 [ 31.701285] RIP: 0010:destroy_node_manager+0x4f4/0x780 [ 31.706548] RSP: 0018:ffff8880959677b0 EFLAGS: 00010297 [ 31.711888] RAX: ffff8880b57664c0 RBX: ffff88809b1bb770 RCX: dffffc0000000000 [ 31.719134] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809b1bb794 [ 31.726390] RBP: ffff88809b1bb680 R08: ffffffff8b9e2980 R09: 0000000000040585 [ 31.733650] R10: ffff8880b5766d70 R11: ffff8880b57664c0 R12: ffff88809b1bb798 [ 31.740894] R13: ffffed1012b6008e R14: ffff88809b1bb770 R15: ffff888095b00440 [ 31.748139] FS: 0000555556a11300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 31.756338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.762194] CR2: 00007fdfc2bde140 CR3: 0000000008e6a000 CR4: 00000000003406f0 [ 31.769542] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.776786] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.784028] Call Trace: [ 31.786596] ? build_node_manager+0x1d50/0x1d50 [ 31.791244] ? trace_hardirqs_on+0x10/0x10 [ 31.795451] ? debug_object_activate+0x292/0x490 [ 31.800199] ? mark_held_locks+0xa6/0xf0 [ 31.804259] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 31.809333] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.814323] ? debug_object_active_state+0x236/0x330 [ 31.819399] ? mark_held_locks+0xa6/0xf0 [ 31.823434] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 31.828511] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.833499] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 31.838575] ? debug_object_active_state+0x236/0x330 [ 31.843650] ? debug_object_free+0x320/0x320 [ 31.848035] ? lock_acquire+0x170/0x3f0 [ 31.852010] ? mark_held_locks+0xa6/0xf0 [ 31.856047] ? check_preemption_disabled+0x35/0x240 [ 31.861059] ? __call_rcu.constprop.0+0x245/0x7d0 [ 31.865877] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.870866] ? f2fs_drop_inode+0x7f0/0x7f0 [ 31.875078] ? destroy_inode+0xb9/0x110 [ 31.879044] ? iput+0x458/0x7e0 [ 31.882300] ? f2fs_show_options+0xdf0/0xdf0 [ 31.886685] f2fs_put_super+0x3e1/0x840 [ 31.890634] ? f2fs_quota_off_umount+0xb0/0xb0 [ 31.895192] ? dispose_list+0x1e0/0x1e0 [ 31.899144] ? fsnotify_unmount_inodes+0x1b4/0x210 [ 31.904049] ? f2fs_quota_off_umount+0xb0/0xb0 [ 31.908624] generic_shutdown_super+0x144/0x370 [ 31.913269] kill_block_super+0x95/0xe0 [ 31.917215] deactivate_locked_super+0x6c/0xd0 [ 31.921775] deactivate_super+0x7f/0xa0 [ 31.925720] cleanup_mnt+0x186/0x2c0 [ 31.929410] task_work_run+0x11f/0x190 [ 31.933273] do_exit+0xa44/0x2850 [ 31.936698] ? __do_page_fault+0x571/0xad0 [ 31.940905] ? mm_update_next_owner+0x5b0/0x5b0 [ 31.945633] ? lock_downgrade+0x740/0x740 [ 31.949751] do_group_exit+0x100/0x2e0 [ 31.953613] SyS_exit_group+0x19/0x20 [ 31.957384] ? do_group_exit+0x2e0/0x2e0 [ 31.961414] do_syscall_64+0x1d5/0x640 [ 31.965290] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.970452] RIP: 0033:0x7fdfc2b659f9 [ 31.974137] RSP: 002b:00007ffd4e9676d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 31.981814] RAX: ffffffffffffffda RBX: 00007fdfc2be0330 RCX: 00007fdfc2b659f9 [ 31.989058] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 31.996299] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fdfc2bdae40 [ 32.003538] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdfc2be0330 [ 32.010781] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 32.018021] Code: 40 6c 00 00 00 00 48 81 c4 d8 03 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 6a 38 89 fe 0f 0b e8 63 38 89 fe 0f 0b e8 5c 38 89 fe <0f> 0b e8 55 38 89 fe 0f 0b e8 4e 38 89 fe 48 8b 7c 24 28 e8 74 [ 32.037085] RIP: destroy_node_manager+0x4f4/0x780 RSP: ffff8880959677b0 [ 32.043849] ---[ end trace 3756574307965212 ]--- [ 32.048587] Kernel panic - not syncing: Fatal exception [ 32.054094] Kernel Offset: disabled [ 32.057698] Rebooting in 86400 seconds..