DUID 00:04:f2:2d:62:da:c3:85:a0:c9:3a:ab:4f:1c:2c:dc:65:98 forked to background, child pid 3178 [ 27.652472][ T3179] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.663261][ T3179] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.46' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.058292][ T3601] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor473/3601 [ 49.067918][ T3601] caller is netdev_core_stats_alloc+0x98/0x110 [ 49.074078][ T3601] CPU: 1 PID: 3601 Comm: syz-executor473 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 49.084557][ T3601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.094595][ T3601] Call Trace: [ 49.097903][ T3601] [ 49.100827][ T3601] dump_stack_lvl+0xcd/0x134 [ 49.105414][ T3601] check_preemption_disabled+0x16b/0x170 [ 49.111125][ T3601] netdev_core_stats_alloc+0x98/0x110 [ 49.116483][ T3601] tun_get_user+0x3455/0x3ab0 [ 49.121166][ T3601] ? tun_build_skb+0x1010/0x1010 [ 49.126095][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 49.130938][ T3601] tun_chr_write_iter+0xe1/0x200 [ 49.135860][ T3601] new_sync_write+0x431/0x660 [ 49.140528][ T3601] ? new_sync_read+0x6e0/0x6e0 [ 49.145300][ T3601] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.151540][ T3601] ? security_file_permission+0xab/0xd0 [ 49.157079][ T3601] vfs_write+0x7cd/0xae0 [ 49.161313][ T3601] ksys_write+0x12d/0x250 [ 49.165631][ T3601] ? __ia32_sys_read+0xb0/0xb0 [ 49.170382][ T3601] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.176266][ T3601] do_syscall_64+0x35/0xb0 [ 49.180671][ T3601] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.186557][ T3601] RIP: 0033:0x7fdcf46257e3 [ 49.190962][ T3601] 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 [ 49.210681][ T3601] RSP: 002b:00007ffe96dcb7a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 49.219085][ T3601] RAX: ffffffffffffffda RBX: 00007ffe96dcb7d0 RCX: 00007fdcf46257e3 [ 49.227086][ T3601] RDX: 0000000000000050 RSI: 0000000000000000 RDI: 00000000000000c8 [ 49.235042][ T3601] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 49.243004][ T3601] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 49.250972][ T3601] R13: 00007ffe96dcb7c0 R14: 00007ffe96dcb7b8 R15: 00007ffe96dcb7b4 [ 49.258954][ T3601]