DUID 00:04:60:0b:d9:94:f1:4e:15:d4:cc:23:27:00:18:99:58:ba forked to background, child pid 3175 [ 26.956370][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.966742][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.121914][ T3591] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor287/3591 [ 49.131477][ T3591] caller is netdev_core_stats_alloc+0x98/0x110 [ 49.137652][ T3591] CPU: 1 PID: 3591 Comm: syz-executor287 Not tainted 5.17.0-rc7-syzkaller-02443-gd96657dc9238 #0 [ 49.148308][ T3591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.158360][ T3591] Call Trace: [ 49.161638][ T3591] [ 49.164558][ T3591] dump_stack_lvl+0xcd/0x134 [ 49.169137][ T3591] check_preemption_disabled+0x16b/0x170 [ 49.174764][ T3591] netdev_core_stats_alloc+0x98/0x110 [ 49.180180][ T3591] tun_get_user+0x2e67/0x3ab0 [ 49.184862][ T3591] ? tun_build_skb+0x1010/0x1010 [ 49.189802][ T3591] ? lock_downgrade+0x6e0/0x6e0 [ 49.194658][ T3591] tun_chr_write_iter+0xe1/0x200 [ 49.199610][ T3591] new_sync_write+0x431/0x660 [ 49.204277][ T3591] ? new_sync_read+0x6e0/0x6e0 [ 49.209034][ T3591] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.215280][ T3591] ? security_file_permission+0xab/0xd0 [ 49.220820][ T3591] vfs_write+0x7cd/0xae0 [ 49.225056][ T3591] ksys_write+0x12d/0x250 [ 49.229387][ T3591] ? __ia32_sys_read+0xb0/0xb0 [ 49.234147][ T3591] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.240031][ T3591] do_syscall_64+0x35/0xb0 [ 49.244429][ T3591] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.250310][ T3591] RIP: 0033:0x7f38cdd45c03 [ 49.254706][ T3591] 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 [ 49.274296][ T3591] RSP: 002b:00007ffd2b4a4888 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 49.282692][ T3591] RAX: ffffffffffffffda RBX: 00007ffd2b4a48a8 RCX: 00007f38cdd45c03 [ 49.290644][ T3591] RDX: 00000000000000d2 RSI: 0000000020000100 RDI: 00000000000000c8 [ 49.298614][ T3591] RBP: 00007ffd2b4a4910 R08: 0000000000000000 R09: 0000000000000000 [ 49.306564][ T3591] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd2b4a48c0 [ 49.314514][ T3591] R13: 0000000000000003 R14: 00007ffd2b4a48b0 R15: 00007ffd2b4a48e0 [ 49.322473][ T3591]