[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.1.21' (ECDSA) to the list of known hosts. syzkaller login: [ 67.842319][ T8489] IPVS: ftp: loaded support on port[0] = 21 [ 67.935765][ T8489] chnl_net:caif_netlink_parms(): no params data found [ 67.990341][ T8489] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.997925][ T8489] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.009197][ T8489] device bridge_slave_0 entered promiscuous mode [ 68.023809][ T8489] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.040888][ T8489] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.060969][ T8489] device bridge_slave_1 entered promiscuous mode [ 68.093697][ T8489] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.105092][ T8489] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.127900][ T8489] team0: Port device team_slave_0 added [ 68.135378][ T8489] team0: Port device team_slave_1 added [ 68.152898][ T8489] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.161600][ T8489] 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. [ 68.189182][ T8489] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.202270][ T8489] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.209231][ T8489] 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. [ 68.236114][ T8489] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.263781][ T8489] device hsr_slave_0 entered promiscuous mode [ 68.270538][ T8489] device hsr_slave_1 entered promiscuous mode [ 68.378982][ T8489] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.389869][ T8489] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.400217][ T8489] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.410146][ T8489] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.436552][ T8489] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.443807][ T8489] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.451779][ T8489] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.458870][ T8489] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.506084][ T8489] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.521057][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.532726][ T34] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.541481][ T34] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.550184][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 68.564586][ T8489] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.576812][ T3920] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.586160][ T3920] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.593292][ T3920] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.611994][ T3920] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.620473][ T3920] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.627508][ T3920] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.643652][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.652469][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.667000][ T3920] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.679768][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.693726][ T8489] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.706001][ T8489] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.716167][ T3920] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.737089][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.744817][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.758449][ T8489] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.780768][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.804064][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.813707][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.823165][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.834293][ T8489] device veth0_vlan entered promiscuous mode [ 68.846786][ T8489] device veth1_vlan entered promiscuous mode [ 68.871156][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.881024][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.889163][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.904315][ T8489] device veth0_macvtap entered promiscuous mode [ 68.914757][ T8489] device veth1_macvtap entered promiscuous mode [ 68.935786][ T8489] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.944002][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.954031][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.967733][ T8489] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.985292][ T8489] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.994372][ T8489] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.003509][ T8489] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.013900][ T8489] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.025268][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program executing program [ 69.034187][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program executing program [ 69.077084][ T8697] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.094659][ T8698] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.113388][ T8699] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. executing program executing program executing program [ 69.128192][ T8700] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.143567][ T8701] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.158000][ T8702] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. executing program [ 69.173351][ T8703] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.187555][ T8704] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.204612][ T8705] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.227097][ T8706] netlink: 1164 bytes leftover after parsing attributes in process `syz-executor077'. [ 69.237669][ T34] ================================================================================ [ 69.247281][ T34] UBSAN: shift-out-of-bounds in ./include/net/sch_generic.h:1193:7 [ 69.255246][ T34] shift exponent 129 is too large for 32-bit type 'int' [ 69.262314][ T34] CPU: 1 PID: 34 Comm: kworker/1:1 Not tainted 5.11.0-rc4-syzkaller #0 [ 69.270583][ T34] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.280651][ T34] Workqueue: ipv6_addrconf addrconf_dad_work [ 69.286716][ T34] Call Trace: [ 69.289989][ T34] dump_stack+0x107/0x163 [ 69.294316][ T34] ubsan_epilogue+0xb/0x5a [ 69.298725][ T34] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 69.305569][ T34] ? ktime_get+0x1bf/0x1e0 [ 69.309981][ T34] ? __rpc_execute+0x8d4/0x12d0 [ 69.314835][ T34] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 69.320576][ T34] ? ktime_get+0x167/0x1e0 [ 69.325001][ T34] cbq_dequeue.cold+0x186/0x18b [ 69.329868][ T34] ? dev_watchdog+0xc20/0xc20 [ 69.334553][ T34] __qdisc_run+0x1ae/0x15f0 [ 69.339062][ T34] __dev_queue_xmit+0x1a30/0x2dd0 [ 69.344117][ T34] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.349399][ T34] ? __ip_finish_output+0x396/0x640 [ 69.354607][ T34] ? mark_held_locks+0x9f/0xe0 [ 69.359382][ T34] ? ip_finish_output2+0x15b3/0x21b0 [ 69.364663][ T34] ip_finish_output2+0xeb6/0x21b0 [ 69.369689][ T34] ? ip_fragment.constprop.0+0x240/0x240 [ 69.375317][ T34] ? __ip_finish_output+0x640/0x640 [ 69.380522][ T34] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 69.387420][ T34] ? debug_object_init_on_stack+0x20/0x20 [ 69.393136][ T34] __ip_finish_output+0x396/0x640 [ 69.398158][ T34] ip_finish_output+0x35/0x200 [ 69.403351][ T34] ip_output+0x196/0x310 [ 69.407592][ T34] ip_local_out+0xaf/0x1a0 [ 69.412032][ T34] iptunnel_xmit+0x5a3/0x9c0 [ 69.416644][ T34] geneve_xmit+0xde1/0x2f60 [ 69.421188][ T34] ? geneve_fill_metadata_dst+0xb70/0xb70 [ 69.426908][ T34] ? skb_crc32c_csum_help+0x70/0x70 [ 69.432110][ T34] ? dev_hard_start_xmit+0x66a/0x920 [ 69.437392][ T34] dev_hard_start_xmit+0x1eb/0x920 [ 69.442535][ T34] __dev_queue_xmit+0x21db/0x2dd0 [ 69.447559][ T34] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.452839][ T34] ? ip6_finish_output2+0x6b8/0x16c0 [ 69.458130][ T34] ? mark_held_locks+0x9f/0xe0 [ 69.462894][ T34] ? memcpy+0x39/0x60 [ 69.466896][ T34] neigh_resolve_output+0x4d8/0x7e0 [ 69.472113][ T34] ip6_finish_output2+0x6b8/0x16c0 [ 69.477236][ T34] __ip6_finish_output+0x4c1/0xe10 [ 69.482350][ T34] ip6_finish_output+0x35/0x200 [ 69.487241][ T34] ip6_output+0x1db/0x520 [ 69.491571][ T34] ndisc_send_skb+0xa90/0x1750 [ 69.496337][ T34] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0 [ 69.502234][ T34] ? ndisc_parse_options.part.0+0x510/0x510 [ 69.508119][ T34] ? rcu_read_lock_sched_held+0x3a/0x70 [ 69.513661][ T34] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 69.519925][ T34] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.526187][ T34] ? skb_set_owner_w+0x270/0x420 [ 69.531130][ T34] ndisc_send_ns+0x3a9/0x850 [ 69.535733][ T34] ? pndisc_redo+0x20/0x20 [ 69.540143][ T34] ? mark_held_locks+0x9f/0xe0 [ 69.544903][ T34] ? __local_bh_enable_ip+0xa0/0x110 [ 69.550198][ T34] addrconf_dad_work+0xc1c/0x1280 [ 69.555479][ T34] ? addrconf_dad_completed+0xc60/0xc60 [ 69.561034][ T34] process_one_work+0x98d/0x15f0 [ 69.565996][ T34] ? pwq_dec_nr_in_flight+0x320/0x320 [ 69.571462][ T34] ? rwlock_bug.part.0+0x90/0x90 [ 69.576418][ T34] ? _raw_spin_lock_irq+0x41/0x50 [ 69.581455][ T34] worker_thread+0x64c/0x1120 [ 69.586158][ T34] ? process_one_work+0x15f0/0x15f0 [ 69.591365][ T34] kthread+0x3b1/0x4a0 [ 69.595439][ T34] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.601332][ T34] ret_from_fork+0x1f/0x30 [ 69.605954][ T34] ================================================================================ [ 69.615306][ T34] Kernel panic - not syncing: panic_on_warn set ... [ 69.621924][ T34] CPU: 1 PID: 34 Comm: kworker/1:1 Not tainted 5.11.0-rc4-syzkaller #0 [ 69.630186][ T34] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.640258][ T34] Workqueue: ipv6_addrconf addrconf_dad_work [ 69.646290][ T34] Call Trace: [ 69.649563][ T34] dump_stack+0x107/0x163 [ 69.653899][ T34] panic+0x306/0x73d [ 69.657799][ T34] ? __warn_printk+0xf3/0xf3 [ 69.662412][ T34] ? ubsan_epilogue+0x3e/0x5a [ 69.667189][ T34] ubsan_epilogue+0x54/0x5a [ 69.671682][ T34] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 69.678437][ T34] ? ktime_get+0x1bf/0x1e0 [ 69.682869][ T34] ? __rpc_execute+0x8d4/0x12d0 [ 69.687715][ T34] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 69.693429][ T34] ? ktime_get+0x167/0x1e0 [ 69.697840][ T34] cbq_dequeue.cold+0x186/0x18b [ 69.702701][ T34] ? dev_watchdog+0xc20/0xc20 [ 69.707384][ T34] __qdisc_run+0x1ae/0x15f0 [ 69.711892][ T34] __dev_queue_xmit+0x1a30/0x2dd0 [ 69.716928][ T34] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.722210][ T34] ? __ip_finish_output+0x396/0x640 [ 69.727406][ T34] ? mark_held_locks+0x9f/0xe0 [ 69.732167][ T34] ? ip_finish_output2+0x15b3/0x21b0 [ 69.737450][ T34] ip_finish_output2+0xeb6/0x21b0 [ 69.742490][ T34] ? ip_fragment.constprop.0+0x240/0x240 [ 69.748114][ T34] ? __ip_finish_output+0x640/0x640 [ 69.753316][ T34] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 69.760181][ T34] ? debug_object_init_on_stack+0x20/0x20 [ 69.765911][ T34] __ip_finish_output+0x396/0x640 [ 69.770936][ T34] ip_finish_output+0x35/0x200 [ 69.775710][ T34] ip_output+0x196/0x310 [ 69.779949][ T34] ip_local_out+0xaf/0x1a0 [ 69.784361][ T34] iptunnel_xmit+0x5a3/0x9c0 [ 69.788951][ T34] geneve_xmit+0xde1/0x2f60 [ 69.793457][ T34] ? geneve_fill_metadata_dst+0xb70/0xb70 [ 69.799175][ T34] ? skb_crc32c_csum_help+0x70/0x70 [ 69.804376][ T34] ? dev_hard_start_xmit+0x66a/0x920 [ 69.809656][ T34] dev_hard_start_xmit+0x1eb/0x920 [ 69.814768][ T34] __dev_queue_xmit+0x21db/0x2dd0 [ 69.819805][ T34] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 69.825090][ T34] ? ip6_finish_output2+0x6b8/0x16c0 [ 69.830412][ T34] ? mark_held_locks+0x9f/0xe0 [ 69.835189][ T34] ? memcpy+0x39/0x60 [ 69.839182][ T34] neigh_resolve_output+0x4d8/0x7e0 [ 69.844401][ T34] ip6_finish_output2+0x6b8/0x16c0 [ 69.849516][ T34] __ip6_finish_output+0x4c1/0xe10 [ 69.854640][ T34] ip6_finish_output+0x35/0x200 [ 69.859493][ T34] ip6_output+0x1db/0x520 [ 69.863816][ T34] ndisc_send_skb+0xa90/0x1750 [ 69.868579][ T34] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0 [ 69.874479][ T34] ? ndisc_parse_options.part.0+0x510/0x510 [ 69.880374][ T34] ? rcu_read_lock_sched_held+0x3a/0x70 [ 69.885912][ T34] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 69.892152][ T34] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.898381][ T34] ? skb_set_owner_w+0x270/0x420 [ 69.905202][ T34] ndisc_send_ns+0x3a9/0x850 [ 69.909791][ T34] ? pndisc_redo+0x20/0x20 [ 69.914200][ T34] ? mark_held_locks+0x9f/0xe0 [ 69.918956][ T34] ? __local_bh_enable_ip+0xa0/0x110 [ 69.924236][ T34] addrconf_dad_work+0xc1c/0x1280 [ 69.929257][ T34] ? addrconf_dad_completed+0xc60/0xc60 [ 69.934800][ T34] process_one_work+0x98d/0x15f0 [ 69.939736][ T34] ? pwq_dec_nr_in_flight+0x320/0x320 [ 69.945107][ T34] ? rwlock_bug.part.0+0x90/0x90 [ 69.950037][ T34] ? _raw_spin_lock_irq+0x41/0x50 [ 69.955058][ T34] worker_thread+0x64c/0x1120 [ 69.959840][ T34] ? process_one_work+0x15f0/0x15f0 [ 69.965033][ T34] kthread+0x3b1/0x4a0 [ 69.969095][ T34] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.975241][ T34] ret_from_fork+0x1f/0x30 [ 69.980477][ T34] Kernel Offset: disabled [ 69.984908][ T34] Rebooting in 86400 seconds..