[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts.
syzkaller login: [   35.976365] IPVS: ftp: loaded support on port[0] = 21
executing program
[   36.140170] F2FS-fs (loop0): Found nat_bits in checkpoint
[   36.181615] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[   36.254540] ------------[ cut here ]------------
[   36.259388] kernel BUG at fs/f2fs/node.c:2780!
[   36.264028] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   36.269392] Modules linked in:
[   36.272574] CPU: 1 PID: 7995 Comm: syz-executor289 Not tainted 4.14.307-syzkaller #0
[   36.280435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[   36.289780] task: ffff8880b54ec340 task.stack: ffff88808b4e8000
[   36.295825] RIP: 0010:destroy_node_manager+0x4f4/0x780
[   36.301077] RSP: 0018:ffff88808b4ef7b0 EFLAGS: 00010297
[   36.306420] RAX: ffff8880b54ec340 RBX: ffff8880af23a5b0 RCX: dffffc0000000000
[   36.313673] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880af23a5d4
[   36.320924] RBP: ffff8880af23a4c0 R08: ffffffff8b9d2630 R09: 0000000000040589
[   36.328196] R10: ffff8880b54ecbf0 R11: ffff8880b54ec340 R12: ffff8880af23a5d8
[   36.335464] R13: ffffed1012b44456 R14: ffff8880af23a5b0 R15: ffff888095a22280
[   36.342718] FS:  00005555555bd300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
[   36.350931] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.356794] CR2: 00007f205d126140 CR3: 0000000008e6a000 CR4: 00000000003406e0
[   36.364047] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.371295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.378542] Call Trace:
[   36.381112]  ? build_node_manager+0x1d50/0x1d50
[   36.385766]  ? trace_hardirqs_on+0x10/0x10
[   36.389984]  ? debug_object_activate+0x292/0x490
[   36.394723]  ? mark_held_locks+0xa6/0xf0
[   36.398768]  ? _raw_spin_unlock_irqrestore+0x79/0xe0
[   36.403854]  ? trace_hardirqs_on_caller+0x3a8/0x580
[   36.408850]  ? debug_object_active_state+0x236/0x330
[   36.413953]  ? mark_held_locks+0xa6/0xf0
[   36.417999]  ? _raw_spin_unlock_irqrestore+0x79/0xe0
[   36.423084]  ? trace_hardirqs_on_caller+0x3a8/0x580
[   36.428098]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   36.433188]  ? debug_object_active_state+0x236/0x330
[   36.438274]  ? debug_object_free+0x320/0x320
[   36.442664]  ? lock_acquire+0x170/0x3f0
[   36.446624]  ? mark_held_locks+0xa6/0xf0
[   36.450670]  ? check_preemption_disabled+0x35/0x240
[   36.455663]  ? __call_rcu.constprop.0+0x245/0x7d0
[   36.460504]  ? trace_hardirqs_on_caller+0x3a8/0x580
[   36.465504]  ? f2fs_drop_inode+0x7f0/0x7f0
[   36.469719]  ? destroy_inode+0xb9/0x110
[   36.473682]  ? iput+0x458/0x7e0
[   36.476941]  ? f2fs_show_options+0xdf0/0xdf0
[   36.481332]  f2fs_put_super+0x3e1/0x840
[   36.485287]  ? f2fs_quota_off_umount+0xb0/0xb0
[   36.489851]  ? dispose_list+0x1e0/0x1e0
[   36.493809]  ? fsnotify_unmount_inodes+0x1b4/0x210
[   36.498722]  ? f2fs_quota_off_umount+0xb0/0xb0
[   36.503291]  generic_shutdown_super+0x144/0x370
[   36.507947]  kill_block_super+0x95/0xe0
[   36.511917]  deactivate_locked_super+0x6c/0xd0
[   36.516478]  deactivate_super+0x7f/0xa0
[   36.520450]  cleanup_mnt+0x186/0x2c0
[   36.524146]  task_work_run+0x11f/0x190
[   36.528019]  do_exit+0xa44/0x2850
[   36.531460]  ? __do_page_fault+0x571/0xad0
[   36.535679]  ? mm_update_next_owner+0x5b0/0x5b0
[   36.540332]  ? lock_downgrade+0x740/0x740
[   36.544474]  do_group_exit+0x100/0x2e0
[   36.548376]  SyS_exit_group+0x19/0x20
[   36.552178]  ? do_group_exit+0x2e0/0x2e0
[   36.556220]  do_syscall_64+0x1d5/0x640
[   36.560093]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[   36.565282] RIP: 0033:0x7f205d0ad9e9
[   36.568986] RSP: 002b:00007ffd9f4975a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   36.576674] RAX: ffffffffffffffda RBX: 00007f205d128330 RCX: 00007f205d0ad9e9
[   36.583925] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   36.591182] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f205d122e40
[   36.598435] R10: 00007ffd9f4974c0 R11: 0000000000000246 R12: 00007f205d128330
[   36.605854] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   36.613114] 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 3a 35 89 fe 0f 0b e8 33 35 89 fe 0f 0b e8 2c 35 89 fe <0f> 0b e8 25 35 89 fe 0f 0b e8 1e 35 89 fe 48 8b 7c 24 28 e8 14 
[   36.632256] RIP: destroy_node_manager+0x4f4/0x780 RSP: ffff88808b4ef7b0
[   36.639219] ---[ end trace 4d4bece5c6e5cdc4 ]---
[   36.643978] Kernel panic - not syncing: Fatal exception
[   36.649565] Kernel Offset: disabled
[   36.653305] Rebooting in 86400 seconds..