[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts. syzkaller login: [ 68.000603][ T8476] IPVS: ftp: loaded support on port[0] = 21 [ 68.105227][ T8476] chnl_net:caif_netlink_parms(): no params data found [ 68.159118][ T8476] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.166349][ T8476] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.176256][ T8476] device bridge_slave_0 entered promiscuous mode [ 68.185474][ T8476] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.193976][ T8476] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.201741][ T8476] device bridge_slave_1 entered promiscuous mode [ 68.222970][ T8476] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.234762][ T8476] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.257104][ T8476] team0: Port device team_slave_0 added [ 68.265303][ T8476] team0: Port device team_slave_1 added [ 68.283287][ T8476] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.290239][ T8476] 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. [ 68.316514][ T8476] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.329421][ T8476] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.336484][ T8476] 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. [ 68.362603][ T8476] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.390087][ T8476] device hsr_slave_0 entered promiscuous mode [ 68.396821][ T8476] device hsr_slave_1 entered promiscuous mode [ 68.504874][ T8476] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.520110][ T8476] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.529230][ T8476] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.539636][ T8476] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.566337][ T8476] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.573527][ T8476] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.581148][ T8476] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.588284][ T8476] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.637407][ T8476] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.650526][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.661986][ T3002] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.670895][ T3002] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.679560][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 68.693655][ T8476] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.705978][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.714863][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.721937][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.742512][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.751528][ T3002] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.758726][ T3002] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.770296][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.779845][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.794668][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.811253][ T8476] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.823781][ T8476] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.836265][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.845448][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.854742][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.872638][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.880042][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.895143][ T8476] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.915245][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.936781][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.945124][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.954121][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.966135][ T8476] device veth0_vlan entered promiscuous mode [ 68.977743][ T8476] device veth1_vlan entered promiscuous mode [ 69.000651][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.009004][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.017776][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.030269][ T8476] device veth0_macvtap entered promiscuous mode [ 69.040442][ T8476] device veth1_macvtap entered promiscuous mode [ 69.058126][ T8476] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 69.067339][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 69.077647][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 69.089621][ T8476] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 69.097425][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 69.106062][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 69.118620][ T8476] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.128617][ T8476] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.137695][ T8476] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.152921][ T8476] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 69.399003][ T5] ================================================================================ [ 69.408547][ T5] UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18 [ 69.415808][ T5] shift exponent 234 is too large for 64-bit type 'long unsigned int' [ 69.424018][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.11.0-rc3-syzkaller #0 [ 69.432176][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.442248][ T5] Workqueue: ipv6_addrconf addrconf_dad_work [ 69.448261][ T5] Call Trace: [ 69.451528][ T5] dump_stack+0x107/0x163 [ 69.455848][ T5] ubsan_epilogue+0xb/0x5a [ 69.460248][ T5] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 69.467017][ T5] ? ktime_get+0x1bf/0x1e0 [ 69.471442][ T5] ? digital_in_recv_sdd_res.cold+0x1/0x62 [ 69.477286][ T5] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 69.483005][ T5] ? ktime_get+0x167/0x1e0 [ 69.487431][ T5] red_enqueue.cold+0x64/0x452 [ 69.492295][ T5] ? red_destroy+0x70/0x70 [ 69.496716][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 69.501674][ T5] __dev_queue_xmit+0x1913/0x2dd0 [ 69.506713][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.511997][ T5] ? __ip_finish_output+0x396/0x640 [ 69.517205][ T5] ? mark_held_locks+0x9f/0xe0 [ 69.521958][ T5] ? ip_finish_output2+0x15b3/0x21b0 [ 69.527243][ T5] ip_finish_output2+0xeb6/0x21b0 [ 69.532265][ T5] ? ip_fragment.constprop.0+0x240/0x240 [ 69.537884][ T5] ? __ip_finish_output+0x640/0x640 [ 69.543076][ T5] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 69.549939][ T5] ? debug_object_init_on_stack+0x20/0x20 [ 69.555649][ T5] __ip_finish_output+0x396/0x640 [ 69.560697][ T5] ip_finish_output+0x35/0x200 [ 69.565451][ T5] ip_output+0x196/0x310 [ 69.569831][ T5] ip_local_out+0xaf/0x1a0 [ 69.574249][ T5] iptunnel_xmit+0x5a3/0x9c0 [ 69.578851][ T5] geneve_xmit+0xde1/0x2f60 [ 69.583390][ T5] ? geneve_fill_metadata_dst+0xb70/0xb70 [ 69.589132][ T5] ? skb_crc32c_csum_help+0x70/0x70 [ 69.594332][ T5] ? dev_hard_start_xmit+0x66a/0x920 [ 69.599613][ T5] dev_hard_start_xmit+0x1eb/0x920 [ 69.604732][ T5] __dev_queue_xmit+0x21db/0x2dd0 [ 69.609756][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.615033][ T5] ? ip6_finish_output2+0x6b8/0x16c0 [ 69.620366][ T5] ? mark_held_locks+0x9f/0xe0 [ 69.625170][ T5] ? memcpy+0x39/0x60 [ 69.629149][ T5] neigh_resolve_output+0x4d8/0x7e0 [ 69.634346][ T5] ip6_finish_output2+0x6b8/0x16c0 [ 69.639456][ T5] __ip6_finish_output+0x4c1/0xe10 [ 69.644564][ T5] ip6_finish_output+0x35/0x200 [ 69.649408][ T5] ip6_output+0x1db/0x520 [ 69.653731][ T5] ndisc_send_skb+0xa90/0x1750 [ 69.658508][ T5] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0 [ 69.664400][ T5] ? ndisc_parse_options.part.0+0x510/0x510 [ 69.670294][ T5] ? rcu_read_lock_sched_held+0x3a/0x70 [ 69.675839][ T5] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 69.682094][ T5] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.688341][ T5] ? skb_set_owner_w+0x270/0x420 [ 69.693277][ T5] ndisc_send_ns+0x3a9/0x850 [ 69.697898][ T5] ? pndisc_redo+0x20/0x20 [ 69.702308][ T5] ? mark_held_locks+0x9f/0xe0 [ 69.707091][ T5] ? __local_bh_enable_ip+0xa0/0x110 [ 69.712403][ T5] addrconf_dad_work+0xc1c/0x1280 [ 69.717441][ T5] ? addrconf_dad_completed+0xc60/0xc60 [ 69.723004][ T5] process_one_work+0x98d/0x15f0 [ 69.727959][ T5] ? pwq_dec_nr_in_flight+0x320/0x320 [ 69.733322][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 69.738260][ T5] ? _raw_spin_lock_irq+0x41/0x50 [ 69.743308][ T5] worker_thread+0x64c/0x1120 [ 69.748011][ T5] ? process_one_work+0x15f0/0x15f0 [ 69.753209][ T5] kthread+0x3b1/0x4a0 [ 69.757271][ T5] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.763163][ T5] ret_from_fork+0x1f/0x30 [ 69.767683][ T5] ================================================================================ [ 69.777014][ T5] Kernel panic - not syncing: panic_on_warn set ... [ 69.784044][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.11.0-rc3-syzkaller #0 [ 69.792213][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.802287][ T5] Workqueue: ipv6_addrconf addrconf_dad_work [ 69.808294][ T5] Call Trace: [ 69.811557][ T5] dump_stack+0x107/0x163 [ 69.815878][ T5] panic+0x306/0x73d [ 69.819763][ T5] ? __warn_printk+0xf3/0xf3 [ 69.824350][ T5] ? ubsan_epilogue+0x3e/0x5a [ 69.829021][ T5] ubsan_epilogue+0x54/0x5a [ 69.833509][ T5] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 69.840258][ T5] ? ktime_get+0x1bf/0x1e0 [ 69.844680][ T5] ? digital_in_recv_sdd_res.cold+0x1/0x62 [ 69.850482][ T5] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 69.856190][ T5] ? ktime_get+0x167/0x1e0 [ 69.860596][ T5] red_enqueue.cold+0x64/0x452 [ 69.865356][ T5] ? red_destroy+0x70/0x70 [ 69.869795][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 69.874733][ T5] __dev_queue_xmit+0x1913/0x2dd0 [ 69.879757][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.885092][ T5] ? __ip_finish_output+0x396/0x640 [ 69.890286][ T5] ? mark_held_locks+0x9f/0xe0 [ 69.895080][ T5] ? ip_finish_output2+0x15b3/0x21b0 [ 69.900355][ T5] ip_finish_output2+0xeb6/0x21b0 [ 69.905374][ T5] ? ip_fragment.constprop.0+0x240/0x240 [ 69.910994][ T5] ? __ip_finish_output+0x640/0x640 [ 69.916213][ T5] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 69.923066][ T5] ? debug_object_init_on_stack+0x20/0x20 [ 69.928798][ T5] __ip_finish_output+0x396/0x640 [ 69.933854][ T5] ip_finish_output+0x35/0x200 [ 69.938610][ T5] ip_output+0x196/0x310 [ 69.942851][ T5] ip_local_out+0xaf/0x1a0 [ 69.947313][ T5] iptunnel_xmit+0x5a3/0x9c0 [ 69.951899][ T5] geneve_xmit+0xde1/0x2f60 [ 69.956415][ T5] ? geneve_fill_metadata_dst+0xb70/0xb70 [ 69.962144][ T5] ? skb_crc32c_csum_help+0x70/0x70 [ 69.967358][ T5] ? dev_hard_start_xmit+0x66a/0x920 [ 69.972632][ T5] dev_hard_start_xmit+0x1eb/0x920 [ 69.977737][ T5] __dev_queue_xmit+0x21db/0x2dd0 [ 69.982770][ T5] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.988069][ T5] ? ip6_finish_output2+0x6b8/0x16c0 [ 69.993361][ T5] ? mark_held_locks+0x9f/0xe0 [ 69.998129][ T5] ? memcpy+0x39/0x60 [ 70.002115][ T5] neigh_resolve_output+0x4d8/0x7e0 [ 70.007334][ T5] ip6_finish_output2+0x6b8/0x16c0 [ 70.012445][ T5] __ip6_finish_output+0x4c1/0xe10 [ 70.017570][ T5] ip6_finish_output+0x35/0x200 [ 70.022423][ T5] ip6_output+0x1db/0x520 [ 70.026760][ T5] ndisc_send_skb+0xa90/0x1750 [ 70.031516][ T5] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0 [ 70.037401][ T5] ? ndisc_parse_options.part.0+0x510/0x510 [ 70.043288][ T5] ? rcu_read_lock_sched_held+0x3a/0x70 [ 70.048845][ T5] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.055082][ T5] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.061307][ T5] ? skb_set_owner_w+0x270/0x420 [ 70.066260][ T5] ndisc_send_ns+0x3a9/0x850 [ 70.070847][ T5] ? pndisc_redo+0x20/0x20 [ 70.075249][ T5] ? mark_held_locks+0x9f/0xe0 [ 70.080018][ T5] ? __local_bh_enable_ip+0xa0/0x110 [ 70.085309][ T5] addrconf_dad_work+0xc1c/0x1280 [ 70.090328][ T5] ? addrconf_dad_completed+0xc60/0xc60 [ 70.095868][ T5] process_one_work+0x98d/0x15f0 [ 70.100823][ T5] ? pwq_dec_nr_in_flight+0x320/0x320 [ 70.106185][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 70.111110][ T5] ? _raw_spin_lock_irq+0x41/0x50 [ 70.116156][ T5] worker_thread+0x64c/0x1120 [ 70.120835][ T5] ? process_one_work+0x15f0/0x15f0 [ 70.126022][ T5] kthread+0x3b1/0x4a0 [ 70.130077][ T5] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 70.135971][ T5] ret_from_fork+0x1f/0x30 [ 70.141222][ T5] Kernel Offset: disabled [ 70.145642][ T5] Rebooting in 86400 seconds..