[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Started System Logging Service. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. syzkaller login: [ 146.122731][ T8235] IPVS: ftp: loaded support on port[0] = 21 [ 146.294521][ T8235] chnl_net:caif_netlink_parms(): no params data found [ 146.379707][ T8235] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.386919][ T8235] bridge0: port 1(bridge_slave_0) entered disabled state [ 146.396026][ T8235] device bridge_slave_0 entered promiscuous mode [ 146.406278][ T8235] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.413412][ T8235] bridge0: port 2(bridge_slave_1) entered disabled state [ 146.422711][ T8235] device bridge_slave_1 entered promiscuous mode [ 146.455492][ T8235] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 146.468261][ T8235] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 146.502362][ T8235] team0: Port device team_slave_0 added [ 146.511737][ T8235] team0: Port device team_slave_1 added [ 146.542374][ T8235] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 146.549519][ T8235] 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. [ 146.575741][ T8235] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 146.589034][ T8235] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 146.596254][ T8235] 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. [ 146.622792][ T8235] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 146.669912][ T8235] device hsr_slave_0 entered promiscuous mode [ 146.677377][ T8235] device hsr_slave_1 entered promiscuous mode [ 146.859046][ T8235] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 146.871463][ T8235] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 146.889390][ T8235] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 146.905967][ T8235] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 146.996825][ T8235] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.003979][ T8235] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.011928][ T8235] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.019461][ T8235] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.093788][ T8235] 8021q: adding VLAN 0 to HW filter on device bond0 [ 147.115287][ T2970] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 147.127306][ T2970] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.136394][ T2970] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.150831][ T2970] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 147.168697][ T8235] 8021q: adding VLAN 0 to HW filter on device team0 [ 147.185283][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 147.194253][ T3483] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.201613][ T3483] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.217566][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 147.227176][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.234665][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.250098][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 147.267084][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 147.286695][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 147.296603][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 147.307889][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 147.323159][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 147.333603][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 147.356309][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 147.366304][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 147.377225][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 147.386375][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 147.402833][ T8235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 147.433194][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 147.440959][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 147.461717][ T8235] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 147.496386][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 147.506675][ T3483] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 147.539220][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 147.548568][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 147.559775][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 147.569137][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 147.586461][ T8235] device veth0_vlan entered promiscuous mode [ 147.607499][ T8235] device veth1_vlan entered promiscuous mode [ 147.648511][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 147.658004][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 147.667652][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 147.677584][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 147.691854][ T8235] device veth0_macvtap entered promiscuous mode [ 147.707147][ T8235] device veth1_macvtap entered promiscuous mode [ 147.738600][ T8235] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 147.746438][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 147.755817][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 147.765313][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 147.775174][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 147.792722][ T8235] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 147.800794][ T8445] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 147.810750][ T8445] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 147.827744][ T8235] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 147.836828][ T8235] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 147.847592][ T8235] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 147.856602][ T8235] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 148.055845][ C1] ===================================================== [ 148.062869][ C1] BUG: KMSAN: uninit-value in ip_rcv_core+0xf4c/0x1480 [ 148.069730][ C1] CPU: 1 PID: 8446 Comm: syz-executor335 Not tainted 5.10.0-rc4-syzkaller #0 [ 148.078476][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.088558][ C1] Call Trace: [ 148.091824][ C1] [ 148.094698][ C1] dump_stack+0x21c/0x280 [ 148.099021][ C1] kmsan_report+0xfb/0x1e0 [ 148.103418][ C1] __msan_warning+0x5f/0xa0 [ 148.107902][ C1] ip_rcv_core+0xf4c/0x1480 [ 148.112391][ C1] ip_rcv+0xc7/0x820 [ 148.116289][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.121467][ C1] __netif_receive_skb+0x1ec/0x640 [ 148.126616][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.132236][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 148.137850][ C1] process_backlog+0x517/0xbd0 [ 148.142597][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 148.147861][ C1] napi_poll+0x40a/0x1020 [ 148.152184][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.157809][ C1] net_rx_action+0x34c/0xd30 [ 148.162402][ C1] ? net_tx_action+0xd30/0xd30 [ 148.167150][ C1] __do_softirq+0x1a9/0x6fa [ 148.171640][ C1] asm_call_irq_on_stack+0xf/0x20 [ 148.176646][ C1] [ 148.179595][ C1] do_softirq_own_stack+0x6e/0x90 [ 148.184623][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 148.189809][ C1] local_bh_enable+0x36/0x40 [ 148.194392][ C1] __dev_queue_xmit+0x3b3e/0x4590 [ 148.199444][ C1] dev_queue_xmit+0x4b/0x60 [ 148.203943][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 148.209215][ C1] packet_sendmsg+0x8778/0x9a60 [ 148.214069][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.219262][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.224879][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.230058][ C1] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 148.235844][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 148.241935][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 148.246772][ C1] ? packet_getsockopt+0x1120/0x1120 [ 148.252051][ C1] __sys_sendmsg+0x6f1/0x840 [ 148.256649][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.262278][ C1] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 148.268341][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.273552][ C1] __se_sys_sendmsg+0x97/0xb0 [ 148.278216][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 148.282963][ C1] do_syscall_64+0x9f/0x140 [ 148.287459][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.293337][ C1] RIP: 0033:0x444449 [ 148.297223][ C1] Code: e8 6c 05 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 eb 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 148.316826][ C1] RSP: 002b:00007ffdf95fddc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 148.325235][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444449 [ 148.333202][ C1] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 148.341160][ C1] RBP: 00007ffdf95fdde0 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 148.349119][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffdf95fde10 [ 148.357071][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 148.365031][ C1] [ 148.367361][ C1] Uninit was stored to memory at: [ 148.372378][ C1] kmsan_internal_chain_origin+0xad/0x130 [ 148.378076][ C1] __msan_chain_origin+0x57/0xa0 [ 148.382994][ C1] iptunnel_xmit+0xbd6/0xf20 [ 148.387566][ C1] udp_tunnel_xmit_skb+0x526/0x640 [ 148.392666][ C1] geneve_xmit+0x209e/0x3c20 [ 148.397262][ C1] xmit_one+0x2b6/0x760 [ 148.401409][ C1] __dev_queue_xmit+0x3426/0x4590 [ 148.406426][ C1] dev_queue_xmit+0x4b/0x60 [ 148.410946][ C1] packet_sendmsg+0x8778/0x9a60 [ 148.415793][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 148.420652][ C1] __sys_sendmsg+0x6f1/0x840 [ 148.425264][ C1] __se_sys_sendmsg+0x97/0xb0 [ 148.429925][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 148.434668][ C1] do_syscall_64+0x9f/0x140 [ 148.439152][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.445034][ C1] [ 148.447337][ C1] Uninit was created at: [ 148.451564][ C1] kmsan_internal_poison_shadow+0x5c/0xf0 [ 148.457261][ C1] kmsan_slab_alloc+0x8d/0xe0 [ 148.461941][ C1] __kmalloc_node_track_caller+0xa48/0x1610 [ 148.467833][ C1] __alloc_skb+0x318/0xb00 [ 148.472229][ C1] alloc_skb_with_frags+0x1f3/0xc10 [ 148.477404][ C1] sock_alloc_send_pskb+0xcc4/0xe80 [ 148.482591][ C1] packet_sendmsg+0x6aab/0x9a60 [ 148.487431][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 148.492263][ C1] __sys_sendmsg+0x6f1/0x840 [ 148.496850][ C1] __se_sys_sendmsg+0x97/0xb0 [ 148.501533][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 148.506278][ C1] do_syscall_64+0x9f/0x140 [ 148.510761][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.516644][ C1] ===================================================== [ 148.523552][ C1] Disabling lock debugging due to kernel taint [ 148.529690][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 148.536292][ C1] CPU: 1 PID: 8446 Comm: syz-executor335 Tainted: G B 5.10.0-rc4-syzkaller #0 [ 148.546413][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.556453][ C1] Call Trace: [ 148.559729][ C1] [ 148.562566][ C1] dump_stack+0x21c/0x280 [ 148.566891][ C1] panic+0x4c6/0xea7 [ 148.570791][ C1] ? add_taint+0x17c/0x210 [ 148.575196][ C1] kmsan_report+0x1de/0x1e0 [ 148.579686][ C1] __msan_warning+0x5f/0xa0 [ 148.584205][ C1] ip_rcv_core+0xf4c/0x1480 [ 148.588704][ C1] ip_rcv+0xc7/0x820 [ 148.592590][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.597771][ C1] __netif_receive_skb+0x1ec/0x640 [ 148.602881][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.608509][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 148.614143][ C1] process_backlog+0x517/0xbd0 [ 148.618905][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 148.624192][ C1] napi_poll+0x40a/0x1020 [ 148.628503][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.634114][ C1] net_rx_action+0x34c/0xd30 [ 148.638696][ C1] ? net_tx_action+0xd30/0xd30 [ 148.643447][ C1] __do_softirq+0x1a9/0x6fa [ 148.647941][ C1] asm_call_irq_on_stack+0xf/0x20 [ 148.652947][ C1] [ 148.655885][ C1] do_softirq_own_stack+0x6e/0x90 [ 148.660901][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 148.666084][ C1] local_bh_enable+0x36/0x40 [ 148.670656][ C1] __dev_queue_xmit+0x3b3e/0x4590 [ 148.675666][ C1] dev_queue_xmit+0x4b/0x60 [ 148.680196][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 148.685466][ C1] packet_sendmsg+0x8778/0x9a60 [ 148.690412][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.695590][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.701204][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.706394][ C1] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 148.712189][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 148.718242][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 148.723093][ C1] ? packet_getsockopt+0x1120/0x1120 [ 148.728374][ C1] __sys_sendmsg+0x6f1/0x840 [ 148.732977][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 148.738609][ C1] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 148.744678][ C1] ? kmsan_get_metadata+0x116/0x180 [ 148.749861][ C1] __se_sys_sendmsg+0x97/0xb0 [ 148.754532][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 148.759291][ C1] do_syscall_64+0x9f/0x140 [ 148.763798][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.769668][ C1] RIP: 0033:0x444449 [ 148.773562][ C1] Code: e8 6c 05 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 eb 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 148.793158][ C1] RSP: 002b:00007ffdf95fddc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 148.801674][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444449 [ 148.809637][ C1] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 148.817612][ C1] RBP: 00007ffdf95fdde0 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 148.825583][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffdf95fde10 [ 148.833545][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 148.842139][ C1] Kernel Offset: disabled [ 148.846472][ C1] Rebooting in 86400 seconds..