[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.91' (ECDSA) to the list of known hosts. syzkaller login: [ 60.356652][ T7023] IPVS: ftp: loaded support on port[0] = 21 [ 60.438397][ T7023] chnl_net:caif_netlink_parms(): no params data found [ 60.491663][ T7023] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.499258][ T7023] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.508507][ T7023] device bridge_slave_0 entered promiscuous mode [ 60.517375][ T7023] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.524630][ T7023] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.532545][ T7023] device bridge_slave_1 entered promiscuous mode [ 60.553513][ T7023] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.565259][ T7023] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.587795][ T7023] team0: Port device team_slave_0 added [ 60.595865][ T7023] team0: Port device team_slave_1 added [ 60.614048][ T7023] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.621169][ T7023] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.647124][ T7023] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.660434][ T7023] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.667405][ T7023] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.693561][ T7023] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.752530][ T7023] device hsr_slave_0 entered promiscuous mode [ 60.800920][ T7023] device hsr_slave_1 entered promiscuous mode [ 60.927951][ T7023] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.953104][ T7023] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.002960][ T7023] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.062215][ T7023] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.146185][ T7023] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.153588][ T7023] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.161605][ T7023] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.168760][ T7023] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.215894][ T7023] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.232320][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.243467][ T2728] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.252136][ T2728] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.261256][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 61.274987][ T7023] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.286582][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.296113][ T2867] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.303299][ T2867] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.315405][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.324908][ T2728] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.332113][ T2728] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.352517][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.361913][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.375186][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.390758][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.401159][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.425332][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.433882][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.446940][ T7023] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.467304][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 61.476180][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.495730][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 61.505154][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.517059][ T7023] device veth0_vlan entered promiscuous mode [ 61.531805][ T2750] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.540378][ T2750] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.550529][ T7023] device veth1_vlan entered promiscuous mode [ 61.572928][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.581902][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.590697][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 61.599372][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.610523][ T7023] device veth0_macvtap entered promiscuous mode [ 61.621236][ T7023] device veth1_macvtap entered promiscuous mode [ 61.638503][ T7023] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.645994][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 61.655638][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 61.664764][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 61.673708][ T2867] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.686440][ T7023] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.693902][ T2750] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 61.703631][ T2750] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 61.946912][ T7231] netlink: 17 bytes leftover after parsing attributes in process `syz-executor671'. [ 61.957138][ T7231] netlink: 32 bytes leftover after parsing attributes in process `syz-executor671'. executing program [ 62.134495][ T7234] netlink: 17 bytes leftover after parsing attributes in process `syz-executor671'. [ 62.144963][ T7234] netlink: 32 bytes leftover after parsing attributes in process `syz-executor671'. executing program [ 62.320540][ T7237] netlink: 17 bytes leftover after parsing attributes in process `syz-executor671'. [ 62.330389][ T7237] netlink: 32 bytes leftover after parsing attributes in process `syz-executor671'. executing program [ 62.508363][ T7240] netlink: 17 bytes leftover after parsing attributes in process `syz-executor671'. [ 62.517987][ T7240] netlink: 32 bytes leftover after parsing attributes in process `syz-executor671'. [ 62.629264][ T2750] divide error: 0000 [#1] PREEMPT SMP KASAN [ 62.635196][ T2750] CPU: 0 PID: 2750 Comm: kworker/0:5 Not tainted 5.6.0-syzkaller #0 [ 62.643213][ T2750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.653303][ T2750] Workqueue: ipv6_addrconf addrconf_dad_work [ 62.659281][ T2750] RIP: 0010:tabledist.part.0+0x134/0x160 [ 62.664890][ T2750] Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 33 a1 31 fb 48 81 eb 00 10 00 00 eb aa e8 25 a1 31 fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 0a 4a 6f fb e9 13 ff ff [ 62.684472][ T2750] RSP: 0018:ffffc900081474a8 EFLAGS: 00010246 [ 62.690526][ T2750] RAX: 000000007fa02450 RBX: 0000000000000000 RCX: 0000000000000000 [ 62.698540][ T2750] RDX: 0000000000000000 RSI: ffffffff8641906b RDI: 0000000000000005 [ 62.706513][ T2750] RBP: ffffffff80000000 R08: ffff88809f8a0040 R09: ffffed10151bf14e [ 62.714472][ T2750] R10: ffff8880a8df8a6f R11: ffffed10151bf14d R12: 0000003e42c00000 [ 62.722489][ T2750] R13: 000000007fa02450 R14: ffff888093a4d330 R15: ffff888093a4d000 [ 62.730453][ T2750] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 62.739375][ T2750] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.745934][ T2750] CR2: 0000000020000140 CR3: 0000000093ef8000 CR4: 00000000001406f0 [ 62.753890][ T2750] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.761912][ T2750] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.770040][ T2750] Call Trace: [ 62.773374][ T2750] netem_enqueue+0x412/0x2da0 [ 62.778143][ T2750] ? rwlock_bug.part.0+0x90/0x90 [ 62.783066][ T2750] ? rcu_read_lock_bh_held+0x5a/0xb0 [ 62.788336][ T2750] __dev_queue_xmit+0x154a/0x30a0 [ 62.793453][ T2750] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 62.798733][ T2750] ? mark_lock+0xf0/0xf10 [ 62.803054][ T2750] ? __ip6_finish_output+0x442/0xab0 [ 62.808332][ T2750] ? print_usage_bug+0x240/0x240 [ 62.813361][ T2750] ? lock_release+0x800/0x800 [ 62.818031][ T2750] ? lock_downgrade+0x840/0x840 [ 62.823017][ T2750] ? rcu_lockdep_current_cpu_online+0xdc/0x130 [ 62.829169][ T2750] ? ip6_finish_output2+0xfb5/0x25b0 [ 62.834432][ T2750] ip6_finish_output2+0xfb5/0x25b0 [ 62.839527][ T2750] ? ip6_frag_next+0xb40/0xb40 [ 62.844357][ T2750] ? lock_downgrade+0x840/0x840 [ 62.849187][ T2750] ? __ip6_finish_output+0x442/0xab0 [ 62.854880][ T2750] __ip6_finish_output+0x442/0xab0 [ 62.859975][ T2750] ip6_finish_output+0x34/0x1f0 [ 62.864815][ T2750] ip6_output+0x239/0x810 [ 62.869136][ T2750] ? ip6_finish_output+0x1f0/0x1f0 [ 62.874227][ T2750] ? mark_held_locks+0x9f/0xe0 [ 62.878991][ T2750] ? __ip6_finish_output+0xab0/0xab0 [ 62.884271][ T2750] mld_sendpack+0x961/0xdf0 [ 62.888754][ T2750] ? nf_hook.constprop.0+0x520/0x520 [ 62.894036][ T2750] ? mark_held_locks+0x9f/0xe0 [ 62.898810][ T2750] ? __local_bh_enable_ip+0x159/0x270 [ 62.904167][ T2750] mld_send_initial_cr.part.0+0x107/0x150 [ 62.909871][ T2750] ipv6_mc_dad_complete+0x192/0x1d0 [ 62.915050][ T2750] addrconf_dad_completed+0x8ce/0xbb0 [ 62.920424][ T2750] ? addrconf_rs_timer+0x6e0/0x6e0 [ 62.925555][ T2750] ? mark_held_locks+0x9f/0xe0 [ 62.930356][ T2750] ? __local_bh_enable_ip+0x159/0x270 [ 62.935708][ T2750] ? addrconf_dad_work+0x7fd/0x1280 [ 62.940901][ T2750] addrconf_dad_work+0x7fd/0x1280 [ 62.945921][ T2750] ? addrconf_dad_completed+0xbb0/0xbb0 [ 62.951471][ T2750] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.957023][ T2750] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.963050][ T2750] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.968795][ T2750] process_one_work+0x965/0x16a0 [ 62.973736][ T2750] ? lock_release+0x800/0x800 [ 62.978392][ T2750] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.983745][ T2750] ? rwlock_bug.part.0+0x90/0x90 [ 62.988660][ T2750] worker_thread+0x96/0xe20 [ 62.993149][ T2750] ? process_one_work+0x16a0/0x16a0 [ 62.998323][ T2750] kthread+0x388/0x470 [ 63.002373][ T2750] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.008068][ T2750] ret_from_fork+0x24/0x30 [ 63.012459][ T2750] Modules linked in: [ 63.016448][ T2750] ---[ end trace a16f3ab879e04622 ]--- [ 63.021952][ T2750] RIP: 0010:tabledist.part.0+0x134/0x160 executing program [ 63.027588][ T2750] Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 33 a1 31 fb 48 81 eb 00 10 00 00 eb aa e8 25 a1 31 fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 0a 4a 6f fb e9 13 ff ff [ 63.047254][ T2750] RSP: 0018:ffffc900081474a8 EFLAGS: 00010246 [ 63.053546][ T2750] RAX: 000000007fa02450 RBX: 0000000000000000 RCX: 0000000000000000 [ 63.061647][ T2750] RDX: 0000000000000000 RSI: ffffffff8641906b RDI: 0000000000000005 [ 63.069652][ T2750] RBP: ffffffff80000000 R08: ffff88809f8a0040 R09: ffffed10151bf14e [ 63.077614][ T2750] R10: ffff8880a8df8a6f R11: ffffed10151bf14d R12: 0000003e42c00000 [ 63.085615][ T2750] R13: 000000007fa02450 R14: ffff888093a4d330 R15: ffff888093a4d000 [ 63.093681][ T2750] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 63.102653][ T2750] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.109283][ T2750] CR2: 0000000020000140 CR3: 0000000009879000 CR4: 00000000001406f0 [ 63.117254][ T2750] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.125418][ T2750] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.133562][ T2750] Kernel panic - not syncing: Fatal exception in interrupt [ 63.141994][ T2750] Kernel Offset: disabled [ 63.146339][ T2750] Rebooting in 86400 seconds..