[ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started System Logging Service. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts. syzkaller login: [ 139.364005][ T8473] IPVS: ftp: loaded support on port[0] = 21 [ 139.528675][ T8473] chnl_net:caif_netlink_parms(): no params data found [ 139.617694][ T8473] bridge0: port 1(bridge_slave_0) entered blocking state [ 139.625079][ T8473] bridge0: port 1(bridge_slave_0) entered disabled state [ 139.634505][ T8473] device bridge_slave_0 entered promiscuous mode [ 139.646895][ T8473] bridge0: port 2(bridge_slave_1) entered blocking state [ 139.654376][ T8473] bridge0: port 2(bridge_slave_1) entered disabled state [ 139.663564][ T8473] device bridge_slave_1 entered promiscuous mode [ 139.696901][ T8473] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 139.711291][ T8473] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 139.743730][ T8473] team0: Port device team_slave_0 added [ 139.754952][ T8473] team0: Port device team_slave_1 added [ 139.783566][ T8473] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 139.790740][ T8473] 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. [ 139.816884][ T8473] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 139.830346][ T8473] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 139.837360][ T8473] 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. [ 139.863511][ T8473] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 139.906610][ T8473] device hsr_slave_0 entered promiscuous mode [ 139.915905][ T8473] device hsr_slave_1 entered promiscuous mode [ 140.094611][ T8473] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 140.108510][ T8473] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 140.125425][ T8473] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 140.143260][ T8473] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 140.243806][ T8473] bridge0: port 2(bridge_slave_1) entered blocking state [ 140.251015][ T8473] bridge0: port 2(bridge_slave_1) entered forwarding state [ 140.258563][ T8473] bridge0: port 1(bridge_slave_0) entered blocking state [ 140.265919][ T8473] bridge0: port 1(bridge_slave_0) entered forwarding state [ 140.349148][ T8473] 8021q: adding VLAN 0 to HW filter on device bond0 [ 140.372449][ T3778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 140.384766][ T3778] bridge0: port 1(bridge_slave_0) entered disabled state [ 140.394653][ T3778] bridge0: port 2(bridge_slave_1) entered disabled state [ 140.407040][ T3778] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 140.426193][ T8473] 8021q: adding VLAN 0 to HW filter on device team0 [ 140.445251][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 140.454298][ T3222] bridge0: port 1(bridge_slave_0) entered blocking state [ 140.461701][ T3222] bridge0: port 1(bridge_slave_0) entered forwarding state [ 140.503691][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 140.512798][ T3222] bridge0: port 2(bridge_slave_1) entered blocking state [ 140.520151][ T3222] bridge0: port 2(bridge_slave_1) entered forwarding state [ 140.532122][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 140.546288][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 140.556428][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 140.566916][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 140.588960][ T3778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 140.598102][ T3778] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 140.635877][ T8473] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 140.648958][ T8473] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 140.662817][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 140.672751][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 140.728048][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 140.735925][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 140.765855][ T8473] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 140.825037][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 140.835380][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 140.873161][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 140.882667][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 140.904482][ T8473] device veth0_vlan entered promiscuous mode [ 140.916036][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 140.925201][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 140.946454][ T8473] device veth1_vlan entered promiscuous mode [ 140.990072][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 140.998727][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 141.008519][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 141.018054][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 141.037875][ T8473] device veth0_macvtap entered promiscuous mode [ 141.053525][ T8473] device veth1_macvtap entered promiscuous mode [ 141.087676][ T8473] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 141.095902][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 141.105421][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 141.114502][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 141.124745][ T8681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 141.146513][ T8473] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 141.154307][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 141.164331][ T3222] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 141.364537][ C1] ===================================================== [ 141.371527][ C1] BUG: KMSAN: uninit-value in ip_rcv_core+0xccd/0x1490 [ 141.378702][ C1] CPU: 1 PID: 8473 Comm: syz-executor229 Not tainted 5.8.0-rc5-syzkaller #0 [ 141.387452][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 141.397487][ C1] Call Trace: [ 141.400759][ C1] [ 141.403619][ C1] dump_stack+0x21c/0x280 [ 141.407955][ C1] kmsan_report+0xf7/0x1e0 [ 141.412369][ C1] __msan_warning+0x58/0xa0 [ 141.416870][ C1] ip_rcv_core+0xccd/0x1490 [ 141.421365][ C1] ip_rcv+0xc7/0x810 [ 141.425243][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.430428][ C1] __netif_receive_skb+0x265/0x670 [ 141.435518][ C1] ? kmsan_set_origin_checked+0x95/0xf0 [ 141.441043][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 141.446660][ C1] process_backlog+0x50d/0xba0 [ 141.451407][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.457368][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 141.462636][ C1] napi_poll+0x43b/0xfd0 [ 141.466860][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.472057][ C1] net_rx_action+0x35c/0xd40 [ 141.476634][ C1] ? net_tx_action+0xdc0/0xdc0 [ 141.481466][ C1] __do_softirq+0x2ea/0x7f5 [ 141.485956][ C1] asm_call_on_stack+0xf/0x20 [ 141.490609][ C1] [ 141.493544][ C1] do_softirq_own_stack+0x7c/0xa0 [ 141.498562][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 141.503755][ C1] local_bh_enable+0x36/0x40 [ 141.508354][ C1] __dev_queue_xmit+0x41a8/0x4470 [ 141.513383][ C1] dev_queue_xmit+0x4b/0x60 [ 141.517877][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 141.523153][ C1] packet_sendmsg+0x8542/0x9a80 [ 141.527994][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.533173][ C1] ? kmsan_internal_set_origin+0x75/0xb0 [ 141.538785][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.543969][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.549770][ C1] ? cpu_partial_store+0xe0/0x260 [ 141.554785][ C1] ? aa_sk_perm+0x7da/0xe70 [ 141.559283][ C1] ____sys_sendmsg+0xc82/0x1240 [ 141.564229][ C1] ? compat_packet_setsockopt+0x3c0/0x3c0 [ 141.569948][ C1] __sys_sendmsg+0x6d1/0x840 [ 141.574596][ C1] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 141.580655][ C1] ? __fpregs_load_activate+0x3f4/0x420 [ 141.586183][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.591374][ C1] __se_sys_sendmsg+0x97/0xb0 [ 141.596037][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 141.600802][ C1] do_syscall_64+0xad/0x160 [ 141.605387][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 141.612473][ C1] RIP: 0033:0x4439b9 [ 141.616340][ C1] Code: Bad RIP value. [ 141.620389][ C1] RSP: 002b:00007ffd74e79d68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 141.628792][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004439b9 [ 141.636890][ C1] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 [ 141.644841][ C1] RBP: 00007ffd74e79d80 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 141.652803][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd74e79db0 [ 141.660769][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 141.668753][ C1] [ 141.671160][ C1] Uninit was stored to memory at: [ 141.676258][ C1] kmsan_internal_chain_origin+0xad/0x130 [ 141.682216][ C1] __msan_chain_origin+0x50/0x90 [ 141.687145][ C1] iptunnel_xmit+0xbb8/0xf00 [ 141.691745][ C1] udp_tunnel_xmit_skb+0x52a/0x650 [ 141.696839][ C1] geneve_xmit+0x180e/0x3200 [ 141.701413][ C1] xmit_one+0x3cf/0x750 [ 141.705567][ C1] __dev_queue_xmit+0x3aad/0x4470 [ 141.710586][ C1] dev_queue_xmit+0x4b/0x60 [ 141.715172][ C1] packet_sendmsg+0x8542/0x9a80 [ 141.720021][ C1] ____sys_sendmsg+0xc82/0x1240 [ 141.725075][ C1] __sys_sendmsg+0x6d1/0x840 [ 141.729740][ C1] __se_sys_sendmsg+0x97/0xb0 [ 141.734420][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 141.741529][ C1] do_syscall_64+0xad/0x160 [ 141.746022][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 141.751884][ C1] [ 141.754195][ C1] Uninit was created at: [ 141.758421][ C1] kmsan_internal_poison_shadow+0x66/0xd0 [ 141.764125][ C1] kmsan_slab_alloc+0x8a/0xe0 [ 141.768779][ C1] __kmalloc_node_track_caller+0xeab/0x12e0 [ 141.774734][ C1] __alloc_skb+0x35f/0xb30 [ 141.779157][ C1] alloc_skb_with_frags+0x1f2/0xc10 [ 141.784348][ C1] sock_alloc_send_pskb+0xc83/0xe50 [ 141.789525][ C1] packet_sendmsg+0x6abb/0x9a80 [ 141.794365][ C1] ____sys_sendmsg+0xc82/0x1240 [ 141.802425][ C1] __sys_sendmsg+0x6d1/0x840 [ 141.806990][ C1] __se_sys_sendmsg+0x97/0xb0 [ 141.811672][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 141.816500][ C1] do_syscall_64+0xad/0x160 [ 141.820982][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 141.826844][ C1] ===================================================== [ 141.833748][ C1] Disabling lock debugging due to kernel taint [ 141.839883][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 141.846476][ C1] CPU: 1 PID: 8473 Comm: syz-executor229 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 141.856508][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 141.866541][ C1] Call Trace: [ 141.869811][ C1] [ 141.872660][ C1] dump_stack+0x21c/0x280 [ 141.877206][ C1] panic+0x4d7/0xef7 [ 141.881115][ C1] ? add_taint+0x17c/0x210 [ 141.885524][ C1] kmsan_report+0x1df/0x1e0 [ 141.890027][ C1] __msan_warning+0x58/0xa0 [ 141.894529][ C1] ip_rcv_core+0xccd/0x1490 [ 141.899029][ C1] ip_rcv+0xc7/0x810 [ 141.902931][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.908129][ C1] __netif_receive_skb+0x265/0x670 [ 141.913250][ C1] ? kmsan_set_origin_checked+0x95/0xf0 [ 141.918788][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 141.924420][ C1] process_backlog+0x50d/0xba0 [ 141.929190][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.935001][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 141.940299][ C1] napi_poll+0x43b/0xfd0 [ 141.944555][ C1] ? kmsan_get_metadata+0x116/0x180 [ 141.949750][ C1] net_rx_action+0x35c/0xd40 [ 141.954349][ C1] ? net_tx_action+0xdc0/0xdc0 [ 141.959105][ C1] __do_softirq+0x2ea/0x7f5 [ 141.963604][ C1] asm_call_on_stack+0xf/0x20 [ 141.968354][ C1] [ 141.971296][ C1] do_softirq_own_stack+0x7c/0xa0 [ 141.976338][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 141.981542][ C1] local_bh_enable+0x36/0x40 [ 141.986122][ C1] __dev_queue_xmit+0x41a8/0x4470 [ 141.991157][ C1] dev_queue_xmit+0x4b/0x60 [ 141.995735][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 142.001012][ C1] packet_sendmsg+0x8542/0x9a80 [ 142.005847][ C1] ? kmsan_get_metadata+0x116/0x180 [ 142.011025][ C1] ? kmsan_internal_set_origin+0x75/0xb0 [ 142.016633][ C1] ? kmsan_get_metadata+0x116/0x180 [ 142.021898][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 142.027684][ C1] ? cpu_partial_store+0xe0/0x260 [ 142.032772][ C1] ? aa_sk_perm+0x7da/0xe70 [ 142.037270][ C1] ____sys_sendmsg+0xc82/0x1240 [ 142.042106][ C1] ? compat_packet_setsockopt+0x3c0/0x3c0 [ 142.047806][ C1] __sys_sendmsg+0x6d1/0x840 [ 142.052411][ C1] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 142.058476][ C1] ? __fpregs_load_activate+0x3f4/0x420 [ 142.064002][ C1] ? kmsan_get_metadata+0x116/0x180 [ 142.069193][ C1] __se_sys_sendmsg+0x97/0xb0 [ 142.073867][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 142.078745][ C1] do_syscall_64+0xad/0x160 [ 142.083239][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 142.089109][ C1] RIP: 0033:0x4439b9 [ 142.092978][ C1] Code: Bad RIP value. [ 142.097019][ C1] RSP: 002b:00007ffd74e79d68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 142.105670][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004439b9 [ 142.113633][ C1] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 [ 142.121596][ C1] RBP: 00007ffd74e79d80 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 142.129643][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd74e79db0 [ 142.137619][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 142.146829][ C1] Kernel Offset: disabled [ 142.151150][ C1] Rebooting in 86400 seconds..