DUID 00:04:64:fe:60:40:6b:21:45:e2:2b:76:87:02:d2:43:fb:60 forked to background, child pid 3176 [ 27.072997][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.090537][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.122506][ T3600] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor202/3600 [ 49.132069][ T3600] caller is netdev_core_stats_alloc+0x98/0x110 [ 49.138283][ T3600] CPU: 0 PID: 3600 Comm: syz-executor202 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 49.148876][ T3600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.158922][ T3600] Call Trace: [ 49.162189][ T3600] [ 49.165108][ T3600] dump_stack_lvl+0xcd/0x134 [ 49.169692][ T3600] check_preemption_disabled+0x16b/0x170 [ 49.175318][ T3600] netdev_core_stats_alloc+0x98/0x110 [ 49.180683][ T3600] tun_get_user+0x3455/0x3ab0 [ 49.185368][ T3600] ? tun_build_skb+0x1010/0x1010 [ 49.190300][ T3600] ? lock_downgrade+0x6e0/0x6e0 [ 49.195169][ T3600] tun_chr_write_iter+0xe1/0x200 [ 49.200095][ T3600] new_sync_write+0x431/0x660 [ 49.204772][ T3600] ? new_sync_read+0x6e0/0x6e0 [ 49.209532][ T3600] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.215768][ T3600] ? security_file_permission+0xab/0xd0 [ 49.221305][ T3600] vfs_write+0x7cd/0xae0 [ 49.225537][ T3600] ksys_write+0x12d/0x250 [ 49.229852][ T3600] ? __ia32_sys_read+0xb0/0xb0 [ 49.234601][ T3600] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.240483][ T3600] do_syscall_64+0x35/0xb0 [ 49.244882][ T3600] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.250765][ T3600] RIP: 0033:0x7f3285c407e3 [ 49.255254][ T3600] 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 [ 49.276239][ T3600] RSP: 002b:00007ffceeb777a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 49.284634][ T3600] RAX: ffffffffffffffda RBX: 00007ffceeb777d0 RCX: 00007f3285c407e3 [ 49.292588][ T3600] RDX: 000000000000016e RSI: 0000000000000000 RDI: 00000000000000c8 [ 49.300561][ T3600] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 49.308513][ T3600] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 49.316479][ T3600] R13: 00007ffceeb777c0 R14: 00007ffceeb777b8 R15: 00007ffceeb777b4 [ 49.324444][ T3600]