forked to background, child pid 3174
[   26.633470][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0
[   26.647626][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: [   27.014347][ T3266] sshd (3266) used greatest stack depth: 22776 bytes left
OK

syzkaller
Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   54.984885][ T3597] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor238/3597
[   54.994435][ T3597] caller is netdev_core_stats_alloc+0x98/0x110
[   55.000846][ T3597] CPU: 1 PID: 3597 Comm: syz-executor238 Not tainted 5.17.0-rc7-syzkaller-02443-gd96657dc9238 #0
[   55.011354][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.021533][ T3597] Call Trace:
[   55.024798][ T3597]  <TASK>
[   55.027714][ T3597]  dump_stack_lvl+0xcd/0x134
[   55.032295][ T3597]  check_preemption_disabled+0x16b/0x170
[   55.037919][ T3597]  netdev_core_stats_alloc+0x98/0x110
[   55.043275][ T3597]  tun_get_user+0x3455/0x3ab0
[   55.047962][ T3597]  ? tun_build_skb+0x1010/0x1010
[   55.052891][ T3597]  ? lock_downgrade+0x6e0/0x6e0
[   55.057738][ T3597]  tun_chr_write_iter+0xe1/0x200
[   55.062660][ T3597]  new_sync_write+0x431/0x660
[   55.067333][ T3597]  ? new_sync_read+0x6e0/0x6e0
[   55.072089][ T3597]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   55.078316][ T3597]  ? security_file_permission+0xab/0xd0
[   55.083850][ T3597]  vfs_write+0x7cd/0xae0
[   55.088099][ T3597]  ksys_write+0x12d/0x250
[   55.092415][ T3597]  ? __ia32_sys_read+0xb0/0xb0
[   55.097167][ T3597]  ? syscall_enter_from_user_mode+0x21/0x70
[   55.103055][ T3597]  do_syscall_64+0x35/0xb0
[   55.107474][ T3597]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   55.113371][ T3597] RIP: 0033:0x7f01ff30a7e3
[   55.117770][ T3597] Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
[   55.137373][ T3597] RSP: 002b:00007fff046c7198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   55.145855][ T3597] RAX: ffffffffffffffda RBX: 00007fff046c71c0 RCX: 00007f01ff30a7e3
[   55.153805][ T3597] RDX: 0000000000000289 RSI: 0000000000000000 RDI: 00000000000000c8
[   55.161769][ T3597] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
[   55.169719][ T3597] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   55.177684][ T3597] R13: 00007fff046c71b0 R14: 00007fff046c71a8 R15: 00007fff046c71a4
[   55.185646][ T3597]  </TASK>