Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.446849] ------------[ cut here ]------------
[   33.451840] WARNING: CPU: 1 PID: 8097 at fs/inode.c:343 inc_nlink.cold+0x11/0x18
[   33.459537] Kernel panic - not syncing: panic_on_warn set ...
[   33.459537] 
[   33.466897] CPU: 1 PID: 8097 Comm: syz-executor407 Not tainted 4.19.206-syzkaller #0
[   33.475196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.484883] Call Trace:
[   33.487465]  dump_stack+0x1fc/0x2ef
[   33.491088]  panic+0x26a/0x50e
[   33.494280]  ? __warn_printk+0xf3/0xf3
[   33.498155]  ? inc_nlink.cold+0x11/0x18
[   33.502113]  ? __probe_kernel_read+0x130/0x1b0
[   33.506686]  ? __warn.cold+0x5/0x5a
[   33.510300]  ? __warn+0xe4/0x200
[   33.513651]  ? inc_nlink.cold+0x11/0x18
[   33.517612]  __warn.cold+0x20/0x5a
[   33.521139]  ? inc_nlink.cold+0x11/0x18
[   33.525097]  report_bug+0x262/0x2b0
[   33.528708]  do_error_trap+0x1d7/0x310
[   33.532578]  ? math_error+0x310/0x310
[   33.536370]  ? __irq_work_queue_local+0x101/0x160
[   33.541208]  ? irq_work_queue+0x29/0x80
[   33.545212]  ? error_entry+0x72/0xd0
[   33.548913]  ? trace_hardirqs_off_caller+0x6e/0x210
[   33.553921]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.558868]  invalid_op+0x14/0x20
[   33.562362] RIP: 0010:inc_nlink.cold+0x11/0x18
[   33.567043] Code: c0 74 04 3c 03 7e 08 8b 5d 48 e9 a0 9a b4 f9 4c 89 e7 e8 83 cb a3 f9 eb ee e8 1c f9 6d f9 48 c7 c7 00 af 74 88 e8 f6 ee fe ff <0f> 0b e9 e2 9b b4 f9 e8 04 f9 6d f9 48 8d 7b 40 b8 ff ff 37 00 48
[   33.585967] RSP: 0018:ffff888095327c40 EFLAGS: 00010282
[   33.591431] RAX: 0000000000000024 RBX: ffff88808db39040 RCX: 0000000000000000
[   33.598685] RDX: 0000000000000000 RSI: ffffffff814e0d61 RDI: ffffed1012a64f7a
[   33.605943] RBP: 0000000000000000 R08: 0000000000000024 R09: 0000000000000000
[   33.613204] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88808db39088
[   33.620459] R13: 0000000000000000 R14: ffff8880968dc000 R15: 0000000000000000
[   33.627758]  ? vprintk_func+0x81/0x180
[   33.631646]  fuse_link+0x384/0x520
[   33.635174]  ? create_new_entry.constprop.0+0x6b0/0x6b0
[   33.640535]  vfs_link+0x7e6/0xc80
[   33.643973]  ? security_path_link+0xef/0x130
[   33.648361]  do_linkat+0x52a/0x810
[   33.651884]  ? __ia32_sys_symlink+0x70/0x70
[   33.656216]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   33.661561]  ? trace_hardirqs_off_caller+0x6e/0x210
[   33.666571]  __x64_sys_link+0x5d/0x80
[   33.670360]  do_syscall_64+0xf9/0x620
[   33.674146]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   33.679328] RIP: 0033:0x445a49
[   33.682515] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   33.701397] RSP: 002b:00007f3dfdfda2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
[   33.709086] RAX: ffffffffffffffda RBX: 00000000004d34e0 RCX: 0000000000445a49
[   33.716440] RDX: 0000000000445a49 RSI: 0000000020000080 RDI: 0000000020000040
[   33.723692] RBP: 00000000004a30e4 R08: 0000000000003065 R09: 0000000000000000
[   33.730941] R10: 0000000000003065 R11: 0000000000000246 R12: 000000000049d0d0
[   33.738211] R13: 000000000049f0d8 R14: 00000000004a10e0 R15: 00000000004d34e8
[   33.745848] Kernel Offset: disabled
[   33.749512] Rebooting in 86400 seconds..