forked to background, child pid 3174 no interfaces have a carrier [ 26.970797][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.985489][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.623296][ T3598] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor352/3598 [ 48.632844][ T3598] caller is netdev_core_stats_alloc+0x98/0x110 [ 48.639058][ T3598] CPU: 0 PID: 3598 Comm: syz-executor352 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 48.649975][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.660017][ T3598] Call Trace: [ 48.663292][ T3598] [ 48.666218][ T3598] dump_stack_lvl+0xcd/0x134 [ 48.670815][ T3598] check_preemption_disabled+0x16b/0x170 [ 48.676457][ T3598] netdev_core_stats_alloc+0x98/0x110 [ 48.681831][ T3598] tun_get_user+0x3455/0x3ab0 [ 48.686521][ T3598] ? tun_build_skb+0x1010/0x1010 [ 48.691462][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 48.696329][ T3598] tun_chr_write_iter+0xe1/0x200 [ 48.701268][ T3598] new_sync_write+0x431/0x660 [ 48.705947][ T3598] ? new_sync_read+0x6e0/0x6e0 [ 48.710722][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.716966][ T3598] ? security_file_permission+0xab/0xd0 [ 48.722519][ T3598] vfs_write+0x7cd/0xae0 [ 48.726765][ T3598] ksys_write+0x12d/0x250 [ 48.731093][ T3598] ? __ia32_sys_read+0xb0/0xb0 [ 48.735859][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 48.741764][ T3598] do_syscall_64+0x35/0xb0 [ 48.746180][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.752077][ T3598] RIP: 0033:0x7f58069da7f3 [ 48.756487][ T3598] 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 [ 48.776092][ T3598] RSP: 002b:00007fffe6ddd958 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 48.784501][ T3598] RAX: ffffffffffffffda RBX: 00007fffe6ddd980 RCX: 00007f58069da7f3 [ 48.792469][ T3598] RDX: 0000000000000011 RSI: 0000000000000000 RDI: 00000000000000c8 [ 48.800434][ T3598] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 48.808399][ T3598] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 48.816363][ T3598] R13: 00007fffe6ddd970 R14: 00007fffe6ddd968 R15: 00007fffe6ddd964 [ 48.824347][ T3598]