no interfaces have a carrier forked to background, child pid 3177 [ 27.135101][ T3178] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.146816][ T3178] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.926839][ T3593] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor165/3593 [ 49.936551][ T3593] caller is netdev_core_stats_alloc+0x98/0x110 [ 49.942784][ T3593] CPU: 1 PID: 3593 Comm: syz-executor165 Not tainted 5.17.0-rc7-syzkaller-02443-gd96657dc9238 #0 [ 49.953304][ T3593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.963353][ T3593] Call Trace: [ 49.966623][ T3593] [ 49.969542][ T3593] dump_stack_lvl+0xcd/0x134 [ 49.974132][ T3593] check_preemption_disabled+0x16b/0x170 [ 49.979772][ T3593] netdev_core_stats_alloc+0x98/0x110 [ 49.985165][ T3593] tun_get_user+0x342b/0x3ab0 [ 49.989861][ T3593] ? tun_build_skb+0x1010/0x1010 [ 49.994918][ T3593] ? lock_downgrade+0x6e0/0x6e0 [ 49.999793][ T3593] tun_chr_write_iter+0xe1/0x200 [ 50.004727][ T3593] new_sync_write+0x431/0x660 [ 50.009418][ T3593] ? new_sync_read+0x6e0/0x6e0 [ 50.014191][ T3593] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.020432][ T3593] ? security_file_permission+0xab/0xd0 [ 50.025985][ T3593] vfs_write+0x7cd/0xae0 [ 50.030252][ T3593] ksys_write+0x12d/0x250 [ 50.034576][ T3593] ? __ia32_sys_read+0xb0/0xb0 [ 50.039349][ T3593] ? syscall_enter_from_user_mode+0x21/0x70 [ 50.045245][ T3593] do_syscall_64+0x35/0xb0 [ 50.049661][ T3593] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.055572][ T3593] RIP: 0033:0x7ff43806e843 [ 50.060003][ T3593] 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 [ 50.079601][ T3593] RSP: 002b:00007ffcaf207268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 50.088012][ T3593] RAX: ffffffffffffffda RBX: 00007ffcaf207290 RCX: 00007ff43806e843 [ 50.095990][ T3593] RDX: 00000000fffffcd0 RSI: 0000000020000000 RDI: 00000000000000c8 [ 50.103968][ T3593] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 50.111945][ T3593] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 50.119908][ T3593] R13: 00007ffcaf207280 R14: 00007ffcaf207278 R15: 00007ffcaf207274 [ 50.127885][ T3593]