[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.122' (ECDSA) to the list of known hosts. syzkaller login: [ 152.000946][ T8269] IPVS: ftp: loaded support on port[0] = 21 [ 152.211811][ T8269] chnl_net:caif_netlink_parms(): no params data found [ 152.374978][ T8269] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.382191][ T8269] bridge0: port 1(bridge_slave_0) entered disabled state [ 152.392306][ T8269] device bridge_slave_0 entered promiscuous mode [ 152.402754][ T8269] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.410173][ T8269] bridge0: port 2(bridge_slave_1) entered disabled state [ 152.420404][ T8269] device bridge_slave_1 entered promiscuous mode [ 152.455754][ T8269] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 152.468983][ T8269] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 152.506544][ T8269] team0: Port device team_slave_0 added [ 152.517661][ T8269] team0: Port device team_slave_1 added [ 152.548347][ T8269] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 152.555445][ T8269] 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. [ 152.581718][ T8269] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 152.595901][ T8269] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 152.603043][ T8269] 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. [ 152.629350][ T8269] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 152.674189][ T8269] device hsr_slave_0 entered promiscuous mode [ 152.681912][ T8269] device hsr_slave_1 entered promiscuous mode [ 152.876565][ T8269] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 152.888909][ T8269] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 152.905915][ T8269] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 152.925292][ T8269] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 153.033346][ T8269] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.040718][ T8269] bridge0: port 2(bridge_slave_1) entered forwarding state [ 153.048649][ T8269] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.056069][ T8269] bridge0: port 1(bridge_slave_0) entered forwarding state [ 153.138280][ T8269] 8021q: adding VLAN 0 to HW filter on device bond0 [ 153.160236][ T2977] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 153.171789][ T2977] bridge0: port 1(bridge_slave_0) entered disabled state [ 153.185716][ T2977] bridge0: port 2(bridge_slave_1) entered disabled state [ 153.196569][ T2977] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 153.216667][ T8269] 8021q: adding VLAN 0 to HW filter on device team0 [ 153.230574][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 153.240841][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 153.250611][ T2081] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.258012][ T2081] bridge0: port 1(bridge_slave_0) entered forwarding state [ 153.274235][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 153.284506][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 153.294065][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.301360][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 153.321497][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 153.340404][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 153.360544][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 153.372182][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 153.390200][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 153.408117][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 153.419033][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 153.440534][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 153.450631][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 153.469744][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 153.479610][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 153.497871][ T8269] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 153.529960][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 153.538930][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 153.561467][ T8269] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 153.596954][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 153.606887][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 153.644106][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 153.654292][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 153.666168][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 153.675952][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 153.692755][ T8269] device veth0_vlan entered promiscuous mode [ 153.716611][ T8269] device veth1_vlan entered promiscuous mode [ 153.759422][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 153.769018][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 153.779009][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 153.788575][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 153.807422][ T8269] device veth0_macvtap entered promiscuous mode [ 153.821643][ T8269] device veth1_macvtap entered promiscuous mode [ 153.856834][ T8269] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 153.864546][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 153.874034][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 153.884085][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 153.894361][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 153.919107][ T8269] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 153.926817][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 153.937246][ T2081] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 153.956107][ T8269] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.964974][ T8269] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.974644][ T8269] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.983752][ T8269] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 154.207625][ C1] ===================================================== [ 154.214674][ C1] BUG: KMSAN: uninit-value in ip_rcv_core+0xf79/0x14b0 [ 154.221554][ C1] CPU: 1 PID: 8480 Comm: syz-executor052 Not tainted 5.10.0-rc4-syzkaller #0 [ 154.230317][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.240391][ C1] Call Trace: [ 154.243686][ C1] [ 154.246538][ C1] dump_stack+0x21c/0x280 [ 154.250873][ C1] kmsan_report+0xf7/0x1e0 [ 154.255293][ C1] __msan_warning+0x5f/0xa0 [ 154.259781][ C1] ip_rcv_core+0xf79/0x14b0 [ 154.264269][ C1] ip_rcv+0xca/0x840 [ 154.268175][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.273397][ C1] __netif_receive_skb+0x1ec/0x640 [ 154.278514][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.284164][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 154.289798][ C1] process_backlog+0x523/0xc10 [ 154.294582][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 154.299919][ C1] napi_poll+0x420/0x1010 [ 154.304293][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.309930][ C1] net_rx_action+0x35c/0xd40 [ 154.314531][ C1] ? net_tx_action+0xd30/0xd30 [ 154.319297][ C1] __do_softirq+0x1a9/0x6fa [ 154.323828][ C1] asm_call_irq_on_stack+0xf/0x20 [ 154.328908][ C1] [ 154.331859][ C1] do_softirq_own_stack+0x6e/0x90 [ 154.336898][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 154.342120][ C1] local_bh_enable+0x36/0x40 [ 154.346716][ C1] __dev_queue_xmit+0x3a9b/0x4520 [ 154.351744][ C1] dev_queue_xmit+0x4b/0x60 [ 154.356231][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 154.361512][ C1] packet_sendmsg+0x86f9/0x99d0 [ 154.366363][ C1] ? kmsan_get_shadow_origin_ptr+0x29/0xb0 [ 154.372166][ C1] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 154.378230][ C1] ? kmsan_internal_chain_origin+0xfa/0x130 [ 154.384155][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.389374][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.395018][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.400270][ C1] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 154.406129][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 154.412200][ C1] ? aa_sk_perm+0x9a8/0xed0 [ 154.416721][ C1] ____sys_sendmsg+0xc7a/0x1240 [ 154.421585][ C1] ? packet_getsockopt+0x1120/0x1120 [ 154.426870][ C1] __sys_sendmsg+0x6d5/0x830 [ 154.431490][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.437163][ C1] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 154.443239][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.448629][ C1] __se_sys_sendmsg+0x97/0xb0 [ 154.453306][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 154.458064][ C1] do_syscall_64+0x9f/0x140 [ 154.462562][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 154.468454][ C1] RIP: 0033:0x444479 [ 154.472349][ 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 [ 154.491965][ C1] RSP: 002b:00007ffcad7d1d78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 154.500391][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444479 [ 154.508391][ C1] RDX: 0000000000000000 RSI: 0000000020000b00 RDI: 0000000000000003 [ 154.516373][ C1] RBP: 00007ffcad7d1d90 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 154.524354][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcad7d1dc0 [ 154.532340][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 154.540318][ C1] [ 154.542641][ C1] Uninit was stored to memory at: [ 154.547672][ C1] kmsan_internal_chain_origin+0xad/0x130 [ 154.553376][ C1] __msan_chain_origin+0x57/0xa0 [ 154.558293][ C1] iptunnel_xmit+0xbd9/0xf20 [ 154.562889][ C1] udp_tunnel_xmit_skb+0x52a/0x650 [ 154.568002][ C1] geneve_xmit+0x3908/0x3cc0 [ 154.572583][ C1] xmit_one+0x2b9/0x770 [ 154.576731][ C1] __dev_queue_xmit+0x33f2/0x4520 [ 154.581753][ C1] dev_queue_xmit+0x4b/0x60 [ 154.586258][ C1] packet_sendmsg+0x86f9/0x99d0 [ 154.591104][ C1] ____sys_sendmsg+0xc7a/0x1240 [ 154.595961][ C1] __sys_sendmsg+0x6d5/0x830 [ 154.600547][ C1] __se_sys_sendmsg+0x97/0xb0 [ 154.605310][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 154.610065][ C1] do_syscall_64+0x9f/0x140 [ 154.614558][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 154.620453][ C1] [ 154.622790][ C1] Uninit was created at: [ 154.627043][ C1] kmsan_internal_poison_shadow+0x5c/0xf0 [ 154.632748][ C1] kmsan_slab_alloc+0x8d/0xe0 [ 154.637508][ C1] __kmalloc_node_track_caller+0xc61/0x15f0 [ 154.643408][ C1] __alloc_skb+0x309/0xae0 [ 154.647842][ C1] alloc_skb_with_frags+0x1f3/0xc20 [ 154.653022][ C1] sock_alloc_send_pskb+0xc73/0xe40 [ 154.658203][ C1] packet_sendmsg+0x6aa3/0x99d0 [ 154.663053][ C1] ____sys_sendmsg+0xc7a/0x1240 [ 154.668066][ C1] __sys_sendmsg+0x6d5/0x830 [ 154.672649][ C1] __se_sys_sendmsg+0x97/0xb0 [ 154.677332][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 154.682103][ C1] do_syscall_64+0x9f/0x140 [ 154.686604][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 154.692476][ C1] ===================================================== [ 154.699388][ C1] Disabling lock debugging due to kernel taint [ 154.705563][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 154.712142][ C1] CPU: 1 PID: 8480 Comm: syz-executor052 Tainted: G B 5.10.0-rc4-syzkaller #0 [ 154.722305][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.732373][ C1] Call Trace: [ 154.735668][ C1] [ 154.738538][ C1] dump_stack+0x21c/0x280 [ 154.742885][ C1] panic+0x4c8/0xea7 [ 154.746898][ C1] ? add_taint+0x17c/0x210 [ 154.751511][ C1] kmsan_report+0x1da/0x1e0 [ 154.756034][ C1] __msan_warning+0x5f/0xa0 [ 154.760547][ C1] ip_rcv_core+0xf79/0x14b0 [ 154.765062][ C1] ip_rcv+0xca/0x840 [ 154.768961][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.774180][ C1] __netif_receive_skb+0x1ec/0x640 [ 154.779314][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.784956][ C1] ? ip_local_deliver_finish+0x370/0x370 [ 154.790603][ C1] process_backlog+0x523/0xc10 [ 154.795391][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 154.800685][ C1] napi_poll+0x420/0x1010 [ 154.805030][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.810748][ C1] net_rx_action+0x35c/0xd40 [ 154.815350][ C1] ? net_tx_action+0xd30/0xd30 [ 154.820115][ C1] __do_softirq+0x1a9/0x6fa [ 154.824637][ C1] asm_call_irq_on_stack+0xf/0x20 [ 154.829651][ C1] [ 154.832590][ C1] do_softirq_own_stack+0x6e/0x90 [ 154.837617][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 154.842837][ C1] local_bh_enable+0x36/0x40 [ 154.847453][ C1] __dev_queue_xmit+0x3a9b/0x4520 [ 154.852500][ C1] dev_queue_xmit+0x4b/0x60 [ 154.857013][ C1] ? netdev_core_pick_tx+0x5a0/0x5a0 [ 154.862286][ C1] packet_sendmsg+0x86f9/0x99d0 [ 154.867143][ C1] ? kmsan_get_shadow_origin_ptr+0x29/0xb0 [ 154.873045][ C1] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 154.879126][ C1] ? kmsan_internal_chain_origin+0xfa/0x130 [ 154.885022][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.890233][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.895875][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.901094][ C1] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 154.906913][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 154.913049][ C1] ? aa_sk_perm+0x9a8/0xed0 [ 154.917571][ C1] ____sys_sendmsg+0xc7a/0x1240 [ 154.922425][ C1] ? packet_getsockopt+0x1120/0x1120 [ 154.927842][ C1] __sys_sendmsg+0x6d5/0x830 [ 154.932448][ C1] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.938087][ C1] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 154.944179][ C1] ? kmsan_get_metadata+0x116/0x180 [ 154.949391][ C1] __se_sys_sendmsg+0x97/0xb0 [ 154.954080][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 154.958837][ C1] do_syscall_64+0x9f/0x140 [ 154.963332][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 154.969216][ C1] RIP: 0033:0x444479 [ 154.973107][ 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 [ 154.992830][ C1] RSP: 002b:00007ffcad7d1d78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 155.001279][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444479 [ 155.009254][ C1] RDX: 0000000000000000 RSI: 0000000020000b00 RDI: 0000000000000003 [ 155.017234][ C1] RBP: 00007ffcad7d1d90 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 155.025201][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcad7d1dc0 [ 155.033185][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 155.041696][ C1] Kernel Offset: disabled [ 155.046026][ C1] Rebooting in 86400 seconds..