[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. syzkaller login: [ 34.712494] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 34.773716] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 34.821347] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 34.866892] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 34.904329] hrtimer: interrupt took 29714 ns executing program [ 34.911039] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 34.948271] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 34.990162] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 35.032519] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 35.072629] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 35.108008] syz-executor411 (8141) used greatest stack depth: 22992 bytes left [ 35.119818] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 35.161256] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.754541] BUG: looking up invalid subclass: 8 [ 36.759212] turning off the locking correctness validator. [ 36.764820] CPU: 1 PID: 8309 Comm: syz-executor411 Not tainted 4.19.211-syzkaller #0 [ 36.772682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.782014] Call Trace: [ 36.784594] dump_stack+0x1fc/0x2ef [ 36.788291] register_lock_class+0x3d8/0x11c0 [ 36.792768] ? rcu_nmi_exit+0xb3/0x180 [ 36.796638] ? static_obj+0x50/0x50 [ 36.800258] __lockdep_init_map+0x263/0x5a0 [ 36.804573] vlan_dev_init+0x780/0xc80 [ 36.808442] ? vlan_dev_hard_header+0x510/0x510 [ 36.813095] register_netdevice+0x2dc/0x10f0 [ 36.817488] ? unregister_netdev+0x20/0x20 [ 36.821708] ? dev_get_nest_level+0x11b/0x1b0 [ 36.826186] register_vlan_dev+0x2f1/0x7d0 [ 36.830417] vlan_newlink+0x477/0x6d0 [ 36.834206] ? vlan_changelink+0x4b0/0x4b0 [ 36.838428] rtnl_newlink+0x1030/0x15c0 [ 36.842388] ? rtnl_getlink+0x620/0x620 [ 36.846353] ? mark_held_locks+0xf0/0xf0 [ 36.850394] ? clockevents_program_event+0x141/0x350 [ 36.855473] ? clockevents_program_event+0x141/0x350 [ 36.860645] ? perf_event_update_userpage+0x516/0x7b0 [ 36.865817] ? lock_downgrade+0x720/0x720 [ 36.869949] ? check_preemption_disabled+0x41/0x280 [ 36.874942] ? check_preemption_disabled+0x41/0x280 [ 36.879940] ? perf_event_task_disable+0x110/0x110 [ 36.884848] ? lock_downgrade+0x720/0x720 [ 36.888974] ? hrtimer_start_range_ns+0x37e/0xd60 [ 36.893806] ? __lock_acquire+0x6de/0x3ff0 [ 36.898046] ? __lock_acquire+0x6de/0x3ff0 [ 36.902361] ? mark_held_locks+0xf0/0xf0 [ 36.906400] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.910963] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.915703] ? mutex_trylock+0x1a0/0x1a0 [ 36.919742] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 36.924130] ? rtnl_getlink+0x620/0x620 [ 36.928082] rtnetlink_rcv_msg+0x453/0xb80 [ 36.932295] ? rtnl_calcit.isra.0+0x430/0x430 [ 36.936771] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.941505] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.946062] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.950801] netlink_rcv_skb+0x160/0x440 [ 36.954858] ? rtnl_calcit.isra.0+0x430/0x430 [ 36.959327] ? netlink_ack+0xae0/0xae0 [ 36.963193] netlink_unicast+0x4d5/0x690 [ 36.967234] ? netlink_sendskb+0x110/0x110 [ 36.971446] ? _copy_from_iter_full+0x229/0x7c0 [ 36.976094] ? __phys_addr_symbol+0x2c/0x70 [ 36.980393] ? __check_object_size+0x17b/0x3e0 [ 36.984956] netlink_sendmsg+0x6c3/0xc50 [ 36.988999] ? aa_af_perm+0x230/0x230 [ 36.992777] ? nlmsg_notify+0x1f0/0x1f0 [ 36.996739] ? kernel_recvmsg+0x220/0x220 [ 37.000872] ? nlmsg_notify+0x1f0/0x1f0 [ 37.004832] sock_sendmsg+0xc3/0x120 [ 37.008533] ___sys_sendmsg+0x7bb/0x8e0 [ 37.012488] ? mark_held_locks+0xf0/0xf0 [ 37.016527] ? copy_msghdr_from_user+0x440/0x440 [ 37.021262] ? lock_downgrade+0x720/0x720 [ 37.025396] ? __wake_up_common_lock+0xb0/0x170 [ 37.030045] ? __might_fault+0x11f/0x1d0 [ 37.034092] ? lock_downgrade+0x720/0x720 [ 37.038222] ? lock_acquire+0x170/0x3c0 [ 37.042177] ? __might_fault+0xef/0x1d0 [ 37.046129] ? __might_fault+0x192/0x1d0 [ 37.050168] ? _copy_to_user+0xb8/0x100 [ 37.054120] ? move_addr_to_user+0x190/0x1d0 [ 37.058507] ? __fdget+0x1a0/0x230 [ 37.062023] __x64_sys_sendmsg+0x132/0x220 [ 37.066241] ? __sys_sendmsg+0x1b0/0x1b0 [ 37.070282] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.075623] ? trace_hardirqs_off_caller+0x6e/0x210 [ 37.080617] ? do_syscall_64+0x21/0x620 [ 37.084566] do_syscall_64+0xf9/0x620 [ 37.088344] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.093510] RIP: 0033:0x7fd927a6e5f9 [ 37.097199] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 37.116077] RSP: 002b:00007ffd3bbcbff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 37.123760] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd927a6e5f9 [ 37.131006] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 [ 37.138252] RBP: 0000000000000000 R08: 0000000027adbe40 R09: 0000000027adbe40 [ 37.145498] R10: 0000000027adbe40 R11: 0000000000000246 R12: 0000000000008f65 [ 37.152744] R13: 00007ffd3bbcc020 R14: 00007ffd3bbcc010 R15: 00007ffd3bbcc004 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.988142] syz-executor411 (8413) used greatest stack depth: 22744 bytes left executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 39.775232] nla_parse: 157 callbacks suppressed [ 39.775244] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 39.806827] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 39.841691] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 39.868293] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 39.895371] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 39.921300] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 39.948320] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 39.978505] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program executing program [ 40.016270] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 40.042739] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.826399] nla_parse: 181 callbacks suppressed [ 44.826410] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 44.905155] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 44.984236] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 45.024751] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 45.062366] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 45.099417] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 45.138710] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program [ 45.176603] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program [ 45.222416] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. [ 45.262307] netlink: 12 bytes leftover after parsing attributes in process `syz-executor411'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program