[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ 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... 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 '10.128.0.144' (ECDSA) to the list of known hosts. syzkaller login: [ 137.465127][ T8219] IPVS: ftp: loaded support on port[0] = 21 [ 137.632142][ T8219] chnl_net:caif_netlink_parms(): no params data found [ 137.723005][ T8219] bridge0: port 1(bridge_slave_0) entered blocking state [ 137.730562][ T8219] bridge0: port 1(bridge_slave_0) entered disabled state [ 137.740823][ T8219] device bridge_slave_0 entered promiscuous mode [ 137.751961][ T8219] bridge0: port 2(bridge_slave_1) entered blocking state [ 137.759567][ T8219] bridge0: port 2(bridge_slave_1) entered disabled state [ 137.769006][ T8219] device bridge_slave_1 entered promiscuous mode [ 137.801933][ T8219] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 137.816458][ T8219] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 137.850506][ T8219] team0: Port device team_slave_0 added [ 137.860217][ T8219] team0: Port device team_slave_1 added [ 137.889925][ T8219] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 137.897186][ T8219] 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. [ 137.923540][ T8219] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 137.936806][ T8219] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 137.944101][ T8219] 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. [ 137.971578][ T8219] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 138.014936][ T8219] device hsr_slave_0 entered promiscuous mode [ 138.022463][ T8219] device hsr_slave_1 entered promiscuous mode [ 138.194140][ T8219] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 138.208492][ T8219] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 138.225831][ T8219] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 138.242653][ T8219] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 138.329214][ T8219] bridge0: port 2(bridge_slave_1) entered blocking state [ 138.336477][ T8219] bridge0: port 2(bridge_slave_1) entered forwarding state [ 138.344377][ T8219] bridge0: port 1(bridge_slave_0) entered blocking state [ 138.352502][ T8219] bridge0: port 1(bridge_slave_0) entered forwarding state [ 138.506222][ T8219] 8021q: adding VLAN 0 to HW filter on device bond0 [ 138.538438][ T4672] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 138.552522][ T4672] bridge0: port 1(bridge_slave_0) entered disabled state [ 138.566057][ T4672] bridge0: port 2(bridge_slave_1) entered disabled state [ 138.577118][ T4672] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 138.598275][ T8219] 8021q: adding VLAN 0 to HW filter on device team0 [ 138.611912][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 138.623469][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 138.632720][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 138.640608][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 138.664632][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 138.675740][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 138.685003][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 138.692488][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 138.701752][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 138.718806][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 138.741906][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 138.752293][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 138.765443][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 138.784175][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 138.795176][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 138.808528][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 138.818376][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 138.835546][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 138.845303][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 138.861355][ T8219] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 138.891870][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 138.900251][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 138.920705][ T8219] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 138.954011][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 138.964011][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 138.996870][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 139.006790][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 139.020019][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 139.029436][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 139.042281][ T8219] device veth0_vlan entered promiscuous mode [ 139.062682][ T8219] device veth1_vlan entered promiscuous mode [ 139.102843][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 139.112317][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 139.122237][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 139.132122][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 139.149059][ T8219] device veth0_macvtap entered promiscuous mode [ 139.164168][ T8219] device veth1_macvtap entered promiscuous mode [ 139.196427][ T8219] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 139.204413][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 139.213684][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 139.222984][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 139.233026][ T819] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 139.250726][ T8219] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 139.259278][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 139.269317][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 139.287498][ T8219] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 139.296777][ T8219] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 139.306008][ T8219] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 139.315221][ T8219] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 139.471480][ C0] ===================================================== [ 139.478586][ C0] BUG: KMSAN: uninit-value in ip_rcv_core+0xf4c/0x1480 [ 139.485663][ C0] CPU: 0 PID: 8430 Comm: syz-executor117 Not tainted 5.12.0-rc6-syzkaller #0 [ 139.494617][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.504869][ C0] Call Trace: [ 139.508156][ C0] [ 139.511007][ C0] dump_stack+0x24c/0x2e0 [ 139.515582][ C0] kmsan_report+0xfb/0x1e0 [ 139.520124][ C0] __msan_warning+0x5c/0xa0 [ 139.525010][ C0] ip_rcv_core+0xf4c/0x1480 [ 139.529547][ C0] ip_rcv+0xc7/0x820 [ 139.533456][ C0] ? kmsan_get_metadata+0x116/0x180 [ 139.538683][ C0] __netif_receive_skb+0x1ec/0x640 [ 139.543972][ C0] ? kmsan_set_origin_checked+0xa2/0x100 [ 139.549686][ C0] ? ip_local_deliver_finish+0x370/0x370 [ 139.555325][ C0] process_backlog+0x517/0xbd0 [ 139.560268][ C0] ? rps_trigger_softirq+0x4d0/0x4d0 [ 139.565575][ C0] __napi_poll+0x13e/0xca0 [ 139.570026][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 139.576113][ C0] net_rx_action+0x726/0x14a0 [ 139.580792][ C0] ? net_tx_action+0xd30/0xd30 [ 139.585562][ C0] __do_softirq+0x1b9/0x715 [ 139.590060][ C0] ? idle_cpu+0x9a/0x1d0 [ 139.594304][ C0] ? __irq_exit_rcu+0x83/0x280 [ 139.599070][ C0] do_softirq+0x123/0x1c0 [ 139.603505][ C0] [ 139.606440][ C0] __local_bh_enable_ip+0xa1/0xb0 [ 139.611716][ C0] local_bh_enable+0x36/0x40 [ 139.616421][ C0] __dev_queue_xmit+0x3b4a/0x4600 [ 139.621542][ C0] dev_queue_xmit+0x4b/0x60 [ 139.626082][ C0] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 139.631363][ C0] packet_sendmsg+0x86ee/0x99d0 [ 139.636210][ C0] ? kmsan_get_metadata+0x116/0x180 [ 139.641409][ C0] ? kmsan_internal_set_origin+0x82/0xc0 [ 139.647034][ C0] ? process_slab+0x13a0/0x1b70 [ 139.651879][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 139.657674][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 139.663822][ C0] ? packet_getsockopt+0x1120/0x1120 [ 139.669099][ C0] __sys_sendto+0x9ea/0xc60 [ 139.673609][ C0] ? __msan_instrument_asm_store+0x104/0x130 [ 139.679616][ C0] __se_sys_sendto+0x107/0x130 [ 139.684448][ C0] __x64_sys_sendto+0x6e/0x90 [ 139.689255][ C0] do_syscall_64+0x9f/0x140 [ 139.693762][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 139.703771][ C0] RIP: 0033:0x443df9 [ 139.707662][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 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 [ 139.727745][ C0] RSP: 002b:00007ffed37d4178 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 139.736482][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 [ 139.744474][ C0] RDX: 000000000000000e RSI: 0000000020000140 RDI: 0000000000000003 [ 139.752702][ C0] RBP: 0000000000000000 R08: 00000000200000c0 R09: 0000000000000080 [ 139.760839][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffed37d41c0 [ 139.768859][ C0] R13: 00007ffed37d41b0 R14: 00007ffed37d41a0 R15: 0000000000000003 [ 139.777063][ C0] [ 139.779395][ C0] Uninit was stored to memory at: [ 139.784406][ C0] kmsan_internal_chain_origin+0xad/0x130 [ 139.790148][ C0] __msan_chain_origin+0x54/0xa0 [ 139.795178][ C0] iptunnel_xmit+0xbd6/0xf20 [ 139.799759][ C0] udp_tunnel_xmit_skb+0x526/0x640 [ 139.804862][ C0] geneve_xmit+0x2139/0x3c40 [ 139.809572][ C0] xmit_one+0x2b6/0x760 [ 139.813728][ C0] __dev_queue_xmit+0x3432/0x4600 [ 139.818745][ C0] dev_queue_xmit+0x4b/0x60 [ 139.823246][ C0] packet_sendmsg+0x86ee/0x99d0 [ 139.828107][ C0] __sys_sendto+0x9ea/0xc60 [ 139.832608][ C0] __se_sys_sendto+0x107/0x130 [ 139.837457][ C0] __x64_sys_sendto+0x6e/0x90 [ 139.842147][ C0] do_syscall_64+0x9f/0x140 [ 139.846645][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 139.852558][ C0] [ 139.854879][ C0] Uninit was created at: [ 139.859125][ C0] kmsan_internal_poison_shadow+0x66/0xd0 [ 139.864853][ C0] kmsan_slab_alloc+0x8e/0xe0 [ 139.869544][ C0] __kmalloc_node_track_caller+0xa4f/0x1470 [ 139.875789][ C0] __alloc_skb+0x4dd/0xe90 [ 139.880190][ C0] alloc_skb_with_frags+0x1f3/0xc10 [ 139.885389][ C0] sock_alloc_send_pskb+0xdc1/0xf90 [ 139.890665][ C0] packet_sendmsg+0x6a12/0x99d0 [ 139.895603][ C0] __sys_sendto+0x9ea/0xc60 [ 139.900094][ C0] __se_sys_sendto+0x107/0x130 [ 139.904858][ C0] __x64_sys_sendto+0x6e/0x90 [ 139.909522][ C0] do_syscall_64+0x9f/0x140 [ 139.914172][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 139.920107][ C0] ===================================================== [ 139.927240][ C0] Disabling lock debugging due to kernel taint [ 139.933380][ C0] Kernel panic - not syncing: panic_on_kmsan set ... [ 139.940049][ C0] CPU: 0 PID: 8430 Comm: syz-executor117 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 139.950269][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.960428][ C0] Call Trace: [ 139.963711][ C0] [ 139.966543][ C0] dump_stack+0x24c/0x2e0 [ 139.970883][ C0] panic+0x4c6/0xea7 [ 139.974871][ C0] ? add_taint+0x17c/0x210 [ 139.979277][ C0] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 139.985453][ C0] kmsan_report+0x1de/0x1e0 [ 139.990043][ C0] __msan_warning+0x5c/0xa0 [ 139.994549][ C0] ip_rcv_core+0xf4c/0x1480 [ 139.999135][ C0] ip_rcv+0xc7/0x820 [ 140.003028][ C0] ? kmsan_get_metadata+0x116/0x180 [ 140.008250][ C0] __netif_receive_skb+0x1ec/0x640 [ 140.013367][ C0] ? kmsan_set_origin_checked+0xa2/0x100 [ 140.019010][ C0] ? ip_local_deliver_finish+0x370/0x370 [ 140.024654][ C0] process_backlog+0x517/0xbd0 [ 140.029445][ C0] ? rps_trigger_softirq+0x4d0/0x4d0 [ 140.034774][ C0] __napi_poll+0x13e/0xca0 [ 140.039184][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 140.045346][ C0] net_rx_action+0x726/0x14a0 [ 140.050107][ C0] ? net_tx_action+0xd30/0xd30 [ 140.055328][ C0] __do_softirq+0x1b9/0x715 [ 140.059853][ C0] ? idle_cpu+0x9a/0x1d0 [ 140.064092][ C0] ? __irq_exit_rcu+0x83/0x280 [ 140.068865][ C0] do_softirq+0x123/0x1c0 [ 140.073198][ C0] [ 140.076234][ C0] __local_bh_enable_ip+0xa1/0xb0 [ 140.081399][ C0] local_bh_enable+0x36/0x40 [ 140.086013][ C0] __dev_queue_xmit+0x3b4a/0x4600 [ 140.091130][ C0] dev_queue_xmit+0x4b/0x60 [ 140.095665][ C0] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 140.100955][ C0] packet_sendmsg+0x86ee/0x99d0 [ 140.105978][ C0] ? kmsan_get_metadata+0x116/0x180 [ 140.111282][ C0] ? kmsan_internal_set_origin+0x82/0xc0 [ 140.117017][ C0] ? process_slab+0x13a0/0x1b70 [ 140.121953][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 140.127761][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 140.133976][ C0] ? packet_getsockopt+0x1120/0x1120 [ 140.139310][ C0] __sys_sendto+0x9ea/0xc60 [ 140.144103][ C0] ? __msan_instrument_asm_store+0x104/0x130 [ 140.150095][ C0] __se_sys_sendto+0x107/0x130 [ 140.155034][ C0] __x64_sys_sendto+0x6e/0x90 [ 140.159706][ C0] do_syscall_64+0x9f/0x140 [ 140.164292][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 140.170213][ C0] RIP: 0033:0x443df9 [ 140.174133][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 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 [ 140.193906][ C0] RSP: 002b:00007ffed37d4178 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 140.202445][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 [ 140.211227][ C0] RDX: 000000000000000e RSI: 0000000020000140 RDI: 0000000000000003 [ 140.219668][ C0] RBP: 0000000000000000 R08: 00000000200000c0 R09: 0000000000000080 [ 140.228507][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffed37d41c0 [ 140.237084][ C0] R13: 00007ffed37d41b0 R14: 00007ffed37d41a0 R15: 0000000000000003 [ 140.247047][ C0] Kernel Offset: disabled [ 140.251397][ C0] Rebooting in 86400 seconds..