[ 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 '10.128.0.170' (ECDSA) to the list of known hosts. syzkaller login: [ 147.320531][ T8228] IPVS: ftp: loaded support on port[0] = 21 [ 147.489710][ T8228] chnl_net:caif_netlink_parms(): no params data found [ 147.574197][ T8228] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.581398][ T8228] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.590868][ T8228] device bridge_slave_0 entered promiscuous mode [ 147.601354][ T8228] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.608923][ T8228] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.618132][ T8228] device bridge_slave_1 entered promiscuous mode [ 147.650969][ T8228] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 147.665198][ T8228] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 147.699146][ T8228] team0: Port device team_slave_0 added [ 147.708492][ T8228] team0: Port device team_slave_1 added [ 147.737695][ T8228] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 147.745002][ T8228] 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. [ 147.771382][ T8228] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 147.785657][ T8228] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 147.792778][ T8228] 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. [ 147.819166][ T8228] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 147.861043][ T8228] device hsr_slave_0 entered promiscuous mode [ 147.868706][ T8228] device hsr_slave_1 entered promiscuous mode [ 148.044197][ T8228] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 148.057622][ T8228] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 148.074451][ T8228] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 148.090759][ T8228] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 148.174456][ T8228] bridge0: port 2(bridge_slave_1) entered blocking state [ 148.182226][ T8228] bridge0: port 2(bridge_slave_1) entered forwarding state [ 148.190107][ T8228] bridge0: port 1(bridge_slave_0) entered blocking state [ 148.197649][ T8228] bridge0: port 1(bridge_slave_0) entered forwarding state [ 148.275512][ T8228] 8021q: adding VLAN 0 to HW filter on device bond0 [ 148.296594][ T4685] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 148.308136][ T4685] bridge0: port 1(bridge_slave_0) entered disabled state [ 148.318950][ T4685] bridge0: port 2(bridge_slave_1) entered disabled state [ 148.330841][ T4685] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 148.349444][ T8228] 8021q: adding VLAN 0 to HW filter on device team0 [ 148.367455][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 148.377360][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 148.384918][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 148.400926][ T8436] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 148.410770][ T8436] bridge0: port 2(bridge_slave_1) entered blocking state [ 148.418277][ T8436] bridge0: port 2(bridge_slave_1) entered forwarding state [ 148.449023][ T8436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 148.469548][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 148.480102][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 148.492119][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 148.513962][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 148.524724][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 148.535032][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 148.544959][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 148.565880][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 148.575424][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 148.590561][ T8228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 148.620501][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 148.628818][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 148.648438][ T8228] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 148.682168][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 148.692182][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 148.725802][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 148.735760][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 148.747041][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 148.756636][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 148.773789][ T8228] device veth0_vlan entered promiscuous mode [ 148.793225][ T8228] device veth1_vlan entered promiscuous mode [ 148.835483][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 148.845050][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 148.854900][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 148.864883][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 148.883127][ T8228] device veth0_macvtap entered promiscuous mode [ 148.898016][ T8228] device veth1_macvtap entered promiscuous mode [ 148.929198][ T8228] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 148.937642][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 148.947619][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 148.957340][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 148.967571][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 148.985124][ T8228] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 148.993382][ T8438] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 149.003560][ T8438] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 149.021068][ T8228] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.030667][ T8228] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.040332][ T8228] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.049602][ T8228] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 149.217918][ C0] ===================================================== [ 149.224894][ C0] BUG: KMSAN: uninit-value in ip_rcv_core+0xf4c/0x1480 [ 149.231877][ C0] CPU: 0 PID: 8439 Comm: syz-executor437 Not tainted 5.12.0-rc6-syzkaller #0 [ 149.241178][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.252075][ C0] Call Trace: [ 149.255402][ C0] [ 149.258360][ C0] dump_stack+0x24c/0x2e0 [ 149.262878][ C0] kmsan_report+0xfb/0x1e0 [ 149.267345][ C0] __msan_warning+0x5c/0xa0 [ 149.271861][ C0] ip_rcv_core+0xf4c/0x1480 [ 149.276372][ C0] ip_rcv+0xc7/0x820 [ 149.280289][ C0] ? kmsan_get_metadata+0x116/0x180 [ 149.285490][ C0] __netif_receive_skb+0x1ec/0x640 [ 149.290663][ C0] ? kmsan_set_origin_checked+0xa2/0x100 [ 149.296436][ C0] ? ip_local_deliver_finish+0x370/0x370 [ 149.302177][ C0] process_backlog+0x517/0xbd0 [ 149.307269][ C0] ? rps_trigger_softirq+0x4d0/0x4d0 [ 149.312764][ C0] __napi_poll+0x13e/0xca0 [ 149.317304][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 149.323381][ C0] net_rx_action+0x726/0x14a0 [ 149.328328][ C0] ? net_tx_action+0xd30/0xd30 [ 149.333126][ C0] __do_softirq+0x1b9/0x715 [ 149.337634][ C0] ? idle_cpu+0x9a/0x1d0 [ 149.341896][ C0] ? __irq_exit_rcu+0x83/0x280 [ 149.346858][ C0] do_softirq+0x123/0x1c0 [ 149.351426][ C0] [ 149.354354][ C0] __local_bh_enable_ip+0xa1/0xb0 [ 149.359375][ C0] local_bh_enable+0x36/0x40 [ 149.363986][ C0] __dev_queue_xmit+0x3b4a/0x4600 [ 149.369032][ C0] dev_queue_xmit+0x4b/0x60 [ 149.373541][ C0] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 149.378847][ C0] packet_sendmsg+0x86ee/0x99d0 [ 149.383699][ C0] ? kmsan_get_metadata+0x116/0x180 [ 149.388911][ C0] ? kmsan_internal_set_origin+0x82/0xc0 [ 149.394544][ C0] ? process_slab+0x13a8/0x1b70 [ 149.399421][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.405301][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 149.411392][ C0] ____sys_sendmsg+0xcfc/0x12f0 [ 149.416277][ C0] ? packet_getsockopt+0x1120/0x1120 [ 149.421595][ C0] __sys_sendmsg+0x714/0x830 [ 149.426194][ C0] ? kmsan_set_origin_checked+0xa2/0x100 [ 149.432350][ C0] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 149.438418][ C0] ? __msan_instrument_asm_store+0x104/0x130 [ 149.444414][ C0] ? kmsan_get_metadata+0x116/0x180 [ 149.449915][ C0] __se_sys_sendmsg+0x97/0xb0 [ 149.454594][ C0] __x64_sys_sendmsg+0x4a/0x70 [ 149.459370][ C0] do_syscall_64+0x9f/0x140 [ 149.463879][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 149.469792][ C0] RIP: 0033:0x443df9 [ 149.473770][ 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 [ 149.493581][ C0] RSP: 002b:00007ffd06cf2828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 149.502250][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 [ 149.510338][ C0] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 149.518590][ C0] RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff [ 149.526866][ C0] R10: 00007ffd06cf22a0 R11: 0000000000000246 R12: 00007ffd06cf2860 [ 149.535007][ C0] R13: 00007ffd06cf2850 R14: 00007ffd06cf2840 R15: 0000000000000003 [ 149.543215][ C0] [ 149.545626][ C0] Uninit was stored to memory at: [ 149.551804][ C0] kmsan_internal_chain_origin+0xad/0x130 [ 149.558155][ C0] __msan_chain_origin+0x54/0xa0 [ 149.563238][ C0] iptunnel_xmit+0xbd6/0xf20 [ 149.568285][ C0] udp_tunnel_xmit_skb+0x526/0x640 [ 149.573537][ C0] geneve_xmit+0x2139/0x3c40 [ 149.578377][ C0] xmit_one+0x2b6/0x760 [ 149.582705][ C0] __dev_queue_xmit+0x3432/0x4600 [ 149.587747][ C0] dev_queue_xmit+0x4b/0x60 [ 149.592425][ C0] packet_sendmsg+0x86ee/0x99d0 [ 149.597284][ C0] ____sys_sendmsg+0xcfc/0x12f0 [ 149.602317][ C0] __sys_sendmsg+0x714/0x830 [ 149.607049][ C0] __se_sys_sendmsg+0x97/0xb0 [ 149.611766][ C0] __x64_sys_sendmsg+0x4a/0x70 [ 149.616575][ C0] do_syscall_64+0x9f/0x140 [ 149.621101][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 149.627081][ C0] [ 149.629403][ C0] Uninit was created at: [ 149.633661][ C0] kmsan_internal_poison_shadow+0x66/0xd0 [ 149.639393][ C0] kmsan_slab_alloc+0x8e/0xe0 [ 149.644063][ C0] __kmalloc_node_track_caller+0xa4f/0x1470 [ 149.650685][ C0] __alloc_skb+0x4dd/0xe90 [ 149.655155][ C0] alloc_skb_with_frags+0x1f3/0xc10 [ 149.660543][ C0] sock_alloc_send_pskb+0xdc1/0xf90 [ 149.665756][ C0] packet_sendmsg+0x6a12/0x99d0 [ 149.670638][ C0] ____sys_sendmsg+0xcfc/0x12f0 [ 149.675512][ C0] __sys_sendmsg+0x714/0x830 [ 149.680104][ C0] __se_sys_sendmsg+0x97/0xb0 [ 149.684885][ C0] __x64_sys_sendmsg+0x4a/0x70 [ 149.689650][ C0] do_syscall_64+0x9f/0x140 [ 149.694173][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 149.700193][ C0] ===================================================== [ 149.707117][ C0] Disabling lock debugging due to kernel taint [ 149.713652][ C0] Kernel panic - not syncing: panic_on_kmsan set ... [ 149.720468][ C0] CPU: 0 PID: 8439 Comm: syz-executor437 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 149.730612][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.740836][ C0] Call Trace: [ 149.744130][ C0] [ 149.747039][ C0] dump_stack+0x24c/0x2e0 [ 149.751398][ C0] panic+0x4c6/0xea7 [ 149.755335][ C0] ? add_taint+0x17c/0x210 [ 149.759746][ C0] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 149.765908][ C0] kmsan_report+0x1de/0x1e0 [ 149.770620][ C0] __msan_warning+0x5c/0xa0 [ 149.775216][ C0] ip_rcv_core+0xf4c/0x1480 [ 149.779743][ C0] ip_rcv+0xc7/0x820 [ 149.783896][ C0] ? kmsan_get_metadata+0x116/0x180 [ 149.789111][ C0] __netif_receive_skb+0x1ec/0x640 [ 149.794221][ C0] ? kmsan_set_origin_checked+0xa2/0x100 [ 149.799892][ C0] ? ip_local_deliver_finish+0x370/0x370 [ 149.805531][ C0] process_backlog+0x517/0xbd0 [ 149.810323][ C0] ? rps_trigger_softirq+0x4d0/0x4d0 [ 149.815693][ C0] __napi_poll+0x13e/0xca0 [ 149.820105][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 149.826177][ C0] net_rx_action+0x726/0x14a0 [ 149.830848][ C0] ? net_tx_action+0xd30/0xd30 [ 149.835702][ C0] __do_softirq+0x1b9/0x715 [ 149.840198][ C0] ? idle_cpu+0x9a/0x1d0 [ 149.844447][ C0] ? __irq_exit_rcu+0x83/0x280 [ 149.849233][ C0] do_softirq+0x123/0x1c0 [ 149.853648][ C0] [ 149.856593][ C0] __local_bh_enable_ip+0xa1/0xb0 [ 149.861789][ C0] local_bh_enable+0x36/0x40 [ 149.866380][ C0] __dev_queue_xmit+0x3b4a/0x4600 [ 149.871431][ C0] dev_queue_xmit+0x4b/0x60 [ 149.875953][ C0] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 149.881384][ C0] packet_sendmsg+0x86ee/0x99d0 [ 149.886253][ C0] ? kmsan_get_metadata+0x116/0x180 [ 149.891605][ C0] ? kmsan_internal_set_origin+0x82/0xc0 [ 149.897278][ C0] ? process_slab+0x13a8/0x1b70 [ 149.902255][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.908157][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 149.914364][ C0] ____sys_sendmsg+0xcfc/0x12f0 [ 149.919243][ C0] ? packet_getsockopt+0x1120/0x1120 [ 149.924667][ C0] __sys_sendmsg+0x714/0x830 [ 149.929714][ C0] ? kmsan_set_origin_checked+0xa2/0x100 [ 149.935356][ C0] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 149.941455][ C0] ? __msan_instrument_asm_store+0x104/0x130 [ 149.947438][ C0] ? kmsan_get_metadata+0x116/0x180 [ 149.952698][ C0] __se_sys_sendmsg+0x97/0xb0 [ 149.957558][ C0] __x64_sys_sendmsg+0x4a/0x70 [ 149.962336][ C0] do_syscall_64+0x9f/0x140 [ 149.966873][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 149.972783][ C0] RIP: 0033:0x443df9 [ 149.976680][ 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 [ 149.996392][ C0] RSP: 002b:00007ffd06cf2828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 150.004833][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 [ 150.012903][ C0] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 150.021069][ C0] RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff [ 150.029074][ C0] R10: 00007ffd06cf22a0 R11: 0000000000000246 R12: 00007ffd06cf2860 [ 150.037361][ C0] R13: 00007ffd06cf2850 R14: 00007ffd06cf2840 R15: 0000000000000003 [ 150.046450][ C0] Kernel Offset: disabled [ 150.050877][ C0] Rebooting in 86400 seconds..