[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.128' (ECDSA) to the list of known hosts. syzkaller login: [ 75.453567][ T8495] IPVS: ftp: loaded support on port[0] = 21 [ 75.659426][ T8495] chnl_net:caif_netlink_parms(): no params data found [ 75.711600][ T8495] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.719223][ T8495] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.727487][ T8495] device bridge_slave_0 entered promiscuous mode [ 75.738004][ T8495] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.745846][ T8495] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.753491][ T8495] device bridge_slave_1 entered promiscuous mode [ 75.775384][ T8495] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.786248][ T8495] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.808758][ T8495] team0: Port device team_slave_0 added [ 75.816171][ T8495] team0: Port device team_slave_1 added [ 75.834222][ T8495] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.841258][ T8495] 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. [ 75.867591][ T8495] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.880922][ T8495] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.890502][ T8495] 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. [ 75.916742][ T8495] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.944278][ T8495] device hsr_slave_0 entered promiscuous mode [ 75.951102][ T8495] device hsr_slave_1 entered promiscuous mode [ 76.055540][ T8495] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.066615][ T8495] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.076613][ T8495] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.086702][ T8495] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.113066][ T8495] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.120255][ T8495] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.128108][ T8495] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.135259][ T8495] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.182882][ T8495] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.198048][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.208416][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.217573][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.226600][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.240367][ T8495] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.250997][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.260481][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.267618][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.285779][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.294201][ T18] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.301396][ T18] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.317547][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.326399][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.346165][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.355952][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.364055][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.375657][ T8495] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.394824][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.402191][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.416707][ T8495] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.445138][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.459130][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.468427][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.477632][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.489842][ T8495] device veth0_vlan entered promiscuous mode [ 76.502137][ T8495] device veth1_vlan entered promiscuous mode [ 76.526076][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.533996][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.543706][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.555176][ T8495] device veth0_macvtap entered promiscuous mode [ 76.565496][ T8495] device veth1_macvtap entered promiscuous mode [ 76.583935][ T8495] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.591551][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.602475][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.617210][ T8495] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.625365][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.638370][ T8495] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.647230][ T8495] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.656690][ T8495] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.665614][ T8495] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.755963][ T229] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.763958][ T229] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 76.807040][ T22] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.828835][ T22] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.838864][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.846800][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.860233][ T8495] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor416'. [ 77.122464][ T5] ================================================================================ [ 77.131970][ T5] UBSAN: shift-out-of-bounds in ./include/net/sch_generic.h:1193:7 [ 77.139972][ T5] shift exponent 129 is too large for 32-bit type 'int' [ 77.147034][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.0-rc7-next-20201208-syzkaller #0 [ 77.156409][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.166466][ T5] Workqueue: ipv6_addrconf addrconf_dad_work [ 77.172431][ T5] Call Trace: [ 77.175711][ T5] dump_stack+0x107/0x163 [ 77.180075][ T5] ubsan_epilogue+0xb/0x5a [ 77.184535][ T5] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 77.191282][ T5] ? ktime_get+0x1bf/0x1e0 [ 77.195686][ T5] ? multipath_run.cold+0x92/0x2c3 [ 77.200791][ T5] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 77.206537][ T5] ? ktime_get+0x167/0x1e0 [ 77.210943][ T5] cbq_dequeue.cold+0x186/0x18b [ 77.215784][ T5] ? dev_watchdog+0xc60/0xc60 [ 77.220455][ T5] __qdisc_run+0x1ab/0x1610 [ 77.224954][ T5] __dev_queue_xmit+0x1abb/0x2ec0 [ 77.229969][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.235317][ T5] ? __ip_finish_output+0x399/0x650 [ 77.240508][ T5] ? mark_held_locks+0x9f/0xe0 [ 77.245307][ T5] ? ip_finish_output2+0x16db/0x2330 [ 77.250581][ T5] ip_finish_output2+0xf5d/0x2330 [ 77.255607][ T5] ? ip_fragment.constprop.0+0x240/0x240 [ 77.261229][ T5] ? __ip_finish_output+0x650/0x650 [ 77.266415][ T5] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 77.273245][ T5] ? debug_object_free+0x2e0/0x2e0 [ 77.278345][ T5] __ip_finish_output+0x399/0x650 [ 77.283353][ T5] ip_finish_output+0x35/0x200 [ 77.288100][ T5] ip_output+0x196/0x310 [ 77.292337][ T5] ip_local_out+0xaf/0x1a0 [ 77.296759][ T5] iptunnel_xmit+0x5a3/0x9c0 [ 77.301352][ T5] geneve_xmit+0xfe0/0x3230 [ 77.305860][ T5] ? geneve_udp_encap_recv+0x2790/0x2790 [ 77.311492][ T5] ? skb_crc32c_csum_help+0x70/0x70 [ 77.316688][ T5] ? dev_hard_start_xmit+0x68a/0x960 [ 77.322015][ T5] dev_hard_start_xmit+0x1eb/0x960 [ 77.327123][ T5] __dev_queue_xmit+0x21de/0x2ec0 [ 77.332200][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.337481][ T5] ? ip6_finish_output2+0x68c/0x1710 [ 77.342761][ T5] ? mark_held_locks+0x9f/0xe0 [ 77.347515][ T5] ? memcpy+0x39/0x60 [ 77.351501][ T5] neigh_resolve_output+0x4d8/0x7e0 [ 77.356694][ T5] ip6_finish_output2+0x68c/0x1710 [ 77.361844][ T5] __ip6_finish_output+0x4be/0xb80 [ 77.366946][ T5] ip6_finish_output+0x35/0x200 [ 77.371782][ T5] ip6_output+0x1db/0x520 [ 77.376124][ T5] ndisc_send_skb+0xacc/0x1850 [ 77.380897][ T5] ? ndisc_redirect_rcv+0x5e0/0x5e0 [ 77.386090][ T5] ? ndisc_parse_options.part.0+0x510/0x510 [ 77.391986][ T5] ? ndisc_alloc_skb+0x134/0x320 [ 77.396932][ T5] ? rcu_read_lock_sched_held+0x3a/0x70 [ 77.402488][ T5] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.408723][ T5] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.414948][ T5] ? skb_set_owner_w+0x270/0x420 [ 77.419892][ T5] ndisc_send_ns+0x3a9/0x850 [ 77.424472][ T5] ? pndisc_redo+0x20/0x20 [ 77.428873][ T5] ? mark_held_locks+0x9f/0xe0 [ 77.433625][ T5] ? __local_bh_enable_ip+0x9c/0x110 [ 77.438909][ T5] addrconf_dad_work+0xc1c/0x1280 [ 77.443919][ T5] ? addrconf_dad_completed+0xc60/0xc60 [ 77.449457][ T5] process_one_work+0x98d/0x1630 [ 77.454387][ T5] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.459748][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 77.464667][ T5] ? _raw_spin_lock_irq+0x41/0x50 [ 77.469681][ T5] worker_thread+0x64c/0x1120 [ 77.476087][ T5] ? process_one_work+0x1630/0x1630 [ 77.481289][ T5] kthread+0x3b1/0x4a0 [ 77.485345][ T5] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 77.491228][ T5] ret_from_fork+0x1f/0x30 [ 77.495738][ T5] ================================================================================ [ 77.505074][ T5] Kernel panic - not syncing: panic_on_warn set ... [ 77.511676][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.0-rc7-next-20201208-syzkaller #0 [ 77.521044][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.531106][ T5] Workqueue: ipv6_addrconf addrconf_dad_work [ 77.537091][ T5] Call Trace: [ 77.540367][ T5] dump_stack+0x107/0x163 [ 77.547808][ T5] panic+0x343/0x77f [ 77.551686][ T5] ? __warn_printk+0xf3/0xf3 [ 77.556267][ T5] ? ubsan_epilogue+0x3e/0x5a [ 77.560949][ T5] ubsan_epilogue+0x54/0x5a [ 77.565438][ T5] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 77.572183][ T5] ? ktime_get+0x1bf/0x1e0 [ 77.576585][ T5] ? multipath_run.cold+0x92/0x2c3 [ 77.581680][ T5] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 77.587380][ T5] ? ktime_get+0x167/0x1e0 [ 77.591803][ T5] cbq_dequeue.cold+0x186/0x18b [ 77.596644][ T5] ? dev_watchdog+0xc60/0xc60 [ 77.601338][ T5] __qdisc_run+0x1ab/0x1610 [ 77.605860][ T5] __dev_queue_xmit+0x1abb/0x2ec0 [ 77.610888][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.616161][ T5] ? __ip_finish_output+0x399/0x650 [ 77.621344][ T5] ? mark_held_locks+0x9f/0xe0 [ 77.626095][ T5] ? ip_finish_output2+0x16db/0x2330 [ 77.631378][ T5] ip_finish_output2+0xf5d/0x2330 [ 77.636460][ T5] ? ip_fragment.constprop.0+0x240/0x240 [ 77.642081][ T5] ? __ip_finish_output+0x650/0x650 [ 77.647264][ T5] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 77.654114][ T5] ? debug_object_free+0x2e0/0x2e0 [ 77.659216][ T5] __ip_finish_output+0x399/0x650 [ 77.664230][ T5] ip_finish_output+0x35/0x200 [ 77.668989][ T5] ip_output+0x196/0x310 [ 77.673218][ T5] ip_local_out+0xaf/0x1a0 [ 77.677625][ T5] iptunnel_xmit+0x5a3/0x9c0 [ 77.682206][ T5] geneve_xmit+0xfe0/0x3230 [ 77.686708][ T5] ? geneve_udp_encap_recv+0x2790/0x2790 [ 77.692333][ T5] ? skb_crc32c_csum_help+0x70/0x70 [ 77.697525][ T5] ? dev_hard_start_xmit+0x68a/0x960 [ 77.702813][ T5] dev_hard_start_xmit+0x1eb/0x960 [ 77.707916][ T5] __dev_queue_xmit+0x21de/0x2ec0 [ 77.712962][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.718239][ T5] ? ip6_finish_output2+0x68c/0x1710 [ 77.723512][ T5] ? mark_held_locks+0x9f/0xe0 [ 77.728275][ T5] ? memcpy+0x39/0x60 [ 77.732245][ T5] neigh_resolve_output+0x4d8/0x7e0 [ 77.737453][ T5] ip6_finish_output2+0x68c/0x1710 [ 77.742553][ T5] __ip6_finish_output+0x4be/0xb80 [ 77.747649][ T5] ip6_finish_output+0x35/0x200 [ 77.752481][ T5] ip6_output+0x1db/0x520 [ 77.756799][ T5] ndisc_send_skb+0xacc/0x1850 [ 77.761552][ T5] ? ndisc_redirect_rcv+0x5e0/0x5e0 [ 77.766736][ T5] ? ndisc_parse_options.part.0+0x510/0x510 [ 77.772609][ T5] ? ndisc_alloc_skb+0x134/0x320 [ 77.777525][ T5] ? rcu_read_lock_sched_held+0x3a/0x70 [ 77.783100][ T5] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.789365][ T5] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.795593][ T5] ? skb_set_owner_w+0x270/0x420 [ 77.800540][ T5] ndisc_send_ns+0x3a9/0x850 [ 77.805120][ T5] ? pndisc_redo+0x20/0x20 [ 77.809520][ T5] ? mark_held_locks+0x9f/0xe0 [ 77.814288][ T5] ? __local_bh_enable_ip+0x9c/0x110 [ 77.819566][ T5] addrconf_dad_work+0xc1c/0x1280 [ 77.824580][ T5] ? addrconf_dad_completed+0xc60/0xc60 [ 77.830169][ T5] process_one_work+0x98d/0x1630 [ 77.835097][ T5] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.840457][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 77.845381][ T5] ? _raw_spin_lock_irq+0x41/0x50 [ 77.850412][ T5] worker_thread+0x64c/0x1120 [ 77.855086][ T5] ? process_one_work+0x1630/0x1630 [ 77.860272][ T5] kthread+0x3b1/0x4a0 [ 77.864335][ T5] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 77.870330][ T5] ret_from_fork+0x1f/0x30 [ 77.875500][ T5] Kernel Offset: disabled [ 77.879912][ T5] Rebooting in 86400 seconds..