[ 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 '10.128.0.126' (ECDSA) to the list of known hosts. syzkaller login: [ 137.331310][ T8231] IPVS: ftp: loaded support on port[0] = 21 [ 137.502472][ T8231] chnl_net:caif_netlink_parms(): no params data found [ 137.589181][ T8231] bridge0: port 1(bridge_slave_0) entered blocking state [ 137.596433][ T8231] bridge0: port 1(bridge_slave_0) entered disabled state [ 137.605864][ T8231] device bridge_slave_0 entered promiscuous mode [ 137.616923][ T8231] bridge0: port 2(bridge_slave_1) entered blocking state [ 137.624216][ T8231] bridge0: port 2(bridge_slave_1) entered disabled state [ 137.632528][ T8231] device bridge_slave_1 entered promiscuous mode [ 137.666427][ T8231] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 137.679581][ T8231] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 137.714065][ T8231] team0: Port device team_slave_0 added [ 137.723763][ T8231] team0: Port device team_slave_1 added [ 137.754419][ T8231] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 137.761541][ T8231] 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. [ 137.787801][ T8231] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 137.800957][ T8231] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 137.808238][ T8231] 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. [ 137.834520][ T8231] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 137.877055][ T8231] device hsr_slave_0 entered promiscuous mode [ 137.886047][ T8231] device hsr_slave_1 entered promiscuous mode [ 138.061849][ T8231] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 138.078564][ T8231] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 138.094936][ T8231] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 138.112780][ T8231] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 138.197298][ T8231] bridge0: port 2(bridge_slave_1) entered blocking state [ 138.204657][ T8231] bridge0: port 2(bridge_slave_1) entered forwarding state [ 138.212161][ T8231] bridge0: port 1(bridge_slave_0) entered blocking state [ 138.219548][ T8231] bridge0: port 1(bridge_slave_0) entered forwarding state [ 138.295563][ T8231] 8021q: adding VLAN 0 to HW filter on device bond0 [ 138.317646][ T1113] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 138.328485][ T1113] bridge0: port 1(bridge_slave_0) entered disabled state [ 138.338959][ T1113] bridge0: port 2(bridge_slave_1) entered disabled state [ 138.349781][ T1113] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 138.370869][ T8231] 8021q: adding VLAN 0 to HW filter on device team0 [ 138.389371][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 138.398988][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 138.406608][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 138.424206][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 138.433732][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 138.441078][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 138.465010][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 138.475957][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 138.494407][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 138.504594][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 138.516991][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 138.529571][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 138.540403][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 138.557668][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 138.567325][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 138.587190][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 138.596669][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 138.611906][ T8231] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 138.641878][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 138.650038][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 138.670966][ T8231] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 138.704775][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 138.714701][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 138.748473][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 138.757453][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 138.768147][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 138.777397][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 138.792313][ T8231] device veth0_vlan entered promiscuous mode [ 138.811932][ T8231] device veth1_vlan entered promiscuous mode [ 138.850294][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 138.860234][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 138.869684][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 138.879672][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 138.896983][ T8231] device veth0_macvtap entered promiscuous mode [ 138.910521][ T8231] device veth1_macvtap entered promiscuous mode [ 138.943502][ T8231] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 138.951022][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 138.960529][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 138.969807][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 138.979892][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 138.998374][ T8231] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 139.006490][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 139.016547][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 139.035323][ T8231] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 139.044276][ T8231] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 139.053557][ T8231] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 139.062450][ T8231] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 139.195744][ C1] ===================================================== [ 139.202712][ C1] BUG: KMSAN: uninit-value in ip_rcv_core+0xf4c/0x1480 [ 139.209603][ C1] CPU: 1 PID: 8443 Comm: syz-executor376 Not tainted 5.11.0-rc7-syzkaller #0 [ 139.218393][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.228542][ C1] Call Trace: [ 139.231809][ C1] [ 139.234635][ C1] dump_stack+0x21c/0x280 [ 139.238959][ C1] kmsan_report+0xfb/0x1e0 [ 139.243372][ C1] __msan_warning+0x5f/0xa0 [ 139.247935][ C1] ip_rcv_core+0xf4c/0x1480 [ 139.252429][ C1] ip_rcv+0xc7/0x820 [ 139.256308][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.261494][ C1] __netif_receive_skb+0x1ec/0x640 [ 139.266591][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 139.272220][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 139.277841][ C1] process_backlog+0x517/0xbd0 [ 139.282593][ C1] ? native_apic_mem_write+0x45/0x90 [ 139.287878][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 139.293182][ C1] napi_poll+0x428/0x15c0 [ 139.297499][ C1] net_rx_action+0x34c/0xd30 [ 139.302076][ C1] ? net_tx_action+0xd30/0xd30 [ 139.306826][ C1] __do_softirq+0x1b9/0x715 [ 139.311348][ C1] asm_call_irq_on_stack+0xf/0x20 [ 139.316371][ C1] [ 139.319293][ C1] do_softirq_own_stack+0x6e/0x90 [ 139.324324][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 139.329513][ C1] local_bh_enable+0x36/0x40 [ 139.334093][ C1] __dev_queue_xmit+0x3b3e/0x45c0 [ 139.339134][ C1] dev_queue_xmit+0x4b/0x60 [ 139.343622][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 139.348911][ C1] packet_sendmsg+0x8778/0x9a60 [ 139.353759][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.358972][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 139.364594][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.369803][ C1] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 139.375599][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 139.381658][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 139.386499][ C1] ? packet_getsockopt+0x1120/0x1120 [ 139.391767][ C1] __sys_sendmsg+0x714/0x830 [ 139.396343][ C1] ? kmsan_get_metadata+0x117/0x180 [ 139.401529][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 139.407147][ C1] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 139.413208][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.418420][ C1] __se_sys_sendmsg+0x97/0xb0 [ 139.423096][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 139.427865][ C1] do_syscall_64+0x9f/0x140 [ 139.432355][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.438232][ C1] RIP: 0033:0x443df9 [ 139.442107][ C1] 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 [ 139.461703][ C1] RSP: 002b:00007ffd3c25aad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 139.470112][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 [ 139.478188][ C1] RDX: 0000000000000000 RSI: 00000000200027c0 RDI: 0000000000000003 [ 139.486151][ C1] RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff [ 139.494113][ C1] R10: 00007ffd3c25a550 R11: 0000000000000246 R12: 00007ffd3c25ab10 [ 139.502068][ C1] R13: 00007ffd3c25ab00 R14: 00007ffd3c25aaf0 R15: 0000000000000003 [ 139.510029][ C1] [ 139.512390][ C1] Uninit was stored to memory at: [ 139.517398][ C1] kmsan_internal_chain_origin+0xad/0x130 [ 139.523115][ C1] __msan_chain_origin+0x57/0xa0 [ 139.528088][ C1] iptunnel_xmit+0xbd6/0xf20 [ 139.532730][ C1] udp_tunnel_xmit_skb+0x526/0x640 [ 139.537847][ C1] geneve_xmit+0x209e/0x3c20 [ 139.542429][ C1] xmit_one+0x2b6/0x760 [ 139.546583][ C1] __dev_queue_xmit+0x3426/0x45c0 [ 139.551602][ C1] dev_queue_xmit+0x4b/0x60 [ 139.556092][ C1] packet_sendmsg+0x8778/0x9a60 [ 139.560931][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 139.565768][ C1] __sys_sendmsg+0x714/0x830 [ 139.570423][ C1] __se_sys_sendmsg+0x97/0xb0 [ 139.575085][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 139.579895][ C1] do_syscall_64+0x9f/0x140 [ 139.584383][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.590261][ C1] [ 139.592563][ C1] Uninit was created at: [ 139.596827][ C1] kmsan_internal_poison_shadow+0x5c/0xf0 [ 139.602566][ C1] kmsan_slab_alloc+0x8d/0xe0 [ 139.607231][ C1] __kmalloc_node_track_caller+0xa37/0x1430 [ 139.613137][ C1] __alloc_skb+0x2f8/0xb30 [ 139.617540][ C1] alloc_skb_with_frags+0x1f3/0xc10 [ 139.624113][ C1] sock_alloc_send_pskb+0xdc1/0xf90 [ 139.629310][ C1] packet_sendmsg+0x6aab/0x9a60 [ 139.634165][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 139.639089][ C1] __sys_sendmsg+0x714/0x830 [ 139.643660][ C1] __se_sys_sendmsg+0x97/0xb0 [ 139.648320][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 139.653081][ C1] do_syscall_64+0x9f/0x140 [ 139.657584][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.663466][ C1] ===================================================== [ 139.670388][ C1] Disabling lock debugging due to kernel taint [ 139.676533][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 139.683110][ C1] CPU: 1 PID: 8443 Comm: syz-executor376 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 139.693269][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.703325][ C1] Call Trace: [ 139.706599][ C1] [ 139.709424][ C1] dump_stack+0x21c/0x280 [ 139.713746][ C1] panic+0x4c6/0xea7 [ 139.717636][ C1] ? add_taint+0x17c/0x210 [ 139.722064][ C1] kmsan_report+0x1de/0x1e0 [ 139.726569][ C1] __msan_warning+0x5f/0xa0 [ 139.731131][ C1] ip_rcv_core+0xf4c/0x1480 [ 139.735648][ C1] ip_rcv+0xc7/0x820 [ 139.739538][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.744729][ C1] __netif_receive_skb+0x1ec/0x640 [ 139.749830][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 139.755450][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 139.761075][ C1] process_backlog+0x517/0xbd0 [ 139.765835][ C1] ? native_apic_mem_write+0x45/0x90 [ 139.771150][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 139.776439][ C1] napi_poll+0x428/0x15c0 [ 139.780761][ C1] net_rx_action+0x34c/0xd30 [ 139.785344][ C1] ? net_tx_action+0xd30/0xd30 [ 139.790108][ C1] __do_softirq+0x1b9/0x715 [ 139.794611][ C1] asm_call_irq_on_stack+0xf/0x20 [ 139.799632][ C1] [ 139.802547][ C1] do_softirq_own_stack+0x6e/0x90 [ 139.807560][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 139.812752][ C1] local_bh_enable+0x36/0x40 [ 139.817393][ C1] __dev_queue_xmit+0x3b3e/0x45c0 [ 139.822407][ C1] dev_queue_xmit+0x4b/0x60 [ 139.826910][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 139.832181][ C1] packet_sendmsg+0x8778/0x9a60 [ 139.837017][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.842204][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 139.847931][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.853174][ C1] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 139.858979][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 139.865044][ C1] ____sys_sendmsg+0xcfc/0x12f0 [ 139.869887][ C1] ? packet_getsockopt+0x1120/0x1120 [ 139.875159][ C1] __sys_sendmsg+0x714/0x830 [ 139.879736][ C1] ? kmsan_get_metadata+0x117/0x180 [ 139.884931][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 139.890594][ C1] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 139.896659][ C1] ? kmsan_get_metadata+0x116/0x180 [ 139.901882][ C1] __se_sys_sendmsg+0x97/0xb0 [ 139.906562][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 139.911327][ C1] do_syscall_64+0x9f/0x140 [ 139.915939][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.921855][ C1] RIP: 0033:0x443df9 [ 139.925746][ C1] 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 [ 139.945372][ C1] RSP: 002b:00007ffd3c25aad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 139.953779][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 [ 139.961734][ C1] RDX: 0000000000000000 RSI: 00000000200027c0 RDI: 0000000000000003 [ 139.969691][ C1] RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff [ 139.977654][ C1] R10: 00007ffd3c25a550 R11: 0000000000000246 R12: 00007ffd3c25ab10 [ 139.985614][ C1] R13: 00007ffd3c25ab00 R14: 00007ffd3c25aaf0 R15: 0000000000000003 [ 139.994460][ C1] Kernel Offset: disabled [ 139.998783][ C1] Rebooting in 86400 seconds..