Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.237' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.918094] ------------[ cut here ]------------
[   31.923069] WARNING: CPU: 0 PID: 8095 at fs/overlayfs/file.c:60 ovl_real_fdget_meta.cold+0x11/0x1e
[   31.932146] Kernel panic - not syncing: panic_on_warn set ...
[   31.932146] 
[   31.939488] CPU: 0 PID: 8095 Comm: syz-executor174 Not tainted 4.19.211-syzkaller #0
[   31.947343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.956672] Call Trace:
[   31.959247]  dump_stack+0x1fc/0x2ef
[   31.962854]  panic+0x26a/0x50e
[   31.966024]  ? __warn_printk+0xf3/0xf3
[   31.969890]  ? ovl_real_fdget_meta.cold+0x11/0x1e
[   31.974716]  ? __probe_kernel_read+0x130/0x1b0
[   31.979297]  ? __warn.cold+0x5/0x5a
[   31.982907]  ? __warn+0xe4/0x200
[   31.986255]  ? ovl_real_fdget_meta.cold+0x11/0x1e
[   31.991076]  __warn.cold+0x20/0x5a
[   31.994595]  ? ovl_real_fdget_meta.cold+0x11/0x1e
[   31.999415]  report_bug+0x262/0x2b0
[   32.003024]  do_error_trap+0x1d7/0x310
[   32.006890]  ? math_error+0x310/0x310
[   32.010669]  ? __irq_work_queue_local+0x101/0x160
[   32.015493]  ? irq_work_queue+0x29/0x80
[   32.019449]  ? error_entry+0x72/0xd0
[   32.023143]  ? trace_hardirqs_off_caller+0x6e/0x210
[   32.028141]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.032965]  invalid_op+0x14/0x20
[   32.036400] RIP: 0010:ovl_real_fdget_meta.cold+0x11/0x1e
[   32.041827] Code: e8 42 ff 69 f9 44 89 f6 48 c7 c7 a0 97 99 88 e8 9e 30 fb ff e9 72 e5 71 fa e8 29 ff 69 f9 48 c7 c7 80 9e 99 88 e8 88 30 fb ff <0f> 0b 41 bd fb ff ff ff e9 4a f3 71 fa e8 0b ff 69 f9 48 c7 c7 80
[   32.060704] RSP: 0018:ffff888091287c00 EFLAGS: 00010282
[   32.066046] RAX: 0000000000000024 RBX: 0000000000002000 RCX: 0000000000000000
[   32.073294] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012250f72
[   32.080539] RBP: 0000000004058000 R08: 0000000000000024 R09: 0000000000000000
[   32.087789] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888099b660c0
[   32.095034] R13: ffff88808dfbb8b0 R14: 000000000001a000 R15: ffff888099b66138
[   32.102298]  ? vprintk_func+0x81/0x180
[   32.106170]  ovl_read_iter+0x103/0x320
[   32.110036]  ? ovl_mmap+0x2e0/0x2e0
[   32.113644]  __vfs_read+0x518/0x750
[   32.117248]  ? __se_sys_copy_file_range+0x410/0x410
[   32.122249]  ? security_file_permission+0x1c0/0x220
[   32.127246]  vfs_read+0x194/0x3c0
[   32.130688]  ksys_read+0x12b/0x2a0
[   32.134218]  ? kernel_write+0x110/0x110
[   32.138174]  ? trace_hardirqs_off_caller+0x6e/0x210
[   32.143167]  ? do_syscall_64+0x21/0x620
[   32.147133]  do_syscall_64+0xf9/0x620
[   32.150913]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   32.156080] RIP: 0033:0x7fa1baf3c109
[   32.159777] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
[   32.178651] RSP: 002b:00007fffc0633b78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[   32.186336] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fa1baf3c109
[   32.193584] RDX: 0000000000002020 RSI: 0000000020000300 RDI: 0000000000000003
[   32.200828] RBP: 00007fa1baf000f0 R08: 0000000000000000 R09: 0000000000000000
[   32.208073] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa1baf00180
[   32.215319] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   32.222838] Kernel Offset: disabled
[   32.226501] Rebooting in 86400 seconds..