syzkaller login: [ 109.447922][T10973] sshd (10973) used greatest stack depth: 3352 bytes left Warning: Permanently added '10.128.0.240' (ECDSA) to the list of known hosts. [ 117.649242][T10988] IPVS: ftp: loaded support on port[0] = 21 [ 117.741951][T10988] chnl_net:caif_netlink_parms(): no params data found [ 117.834400][T10988] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.841739][T10988] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.850819][T10988] device bridge_slave_0 entered promiscuous mode [ 117.859879][T10988] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.867299][T10988] bridge0: port 2(bridge_slave_1) entered disabled state [ 117.875895][T10988] device bridge_slave_1 entered promiscuous mode [ 117.903250][T10988] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 117.916208][T10988] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 117.944951][T10988] team0: Port device team_slave_0 added [ 117.953762][T10988] team0: Port device team_slave_1 added [ 117.977444][T10988] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 117.984889][T10988] 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. [ 118.011649][T10988] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 118.024666][T10988] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 118.031695][T10988] 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. [ 118.061331][T10988] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 118.147697][T10988] device hsr_slave_0 entered promiscuous mode [ 118.204258][T10988] device hsr_slave_1 entered promiscuous mode [ 118.355659][T10988] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 118.398536][T10988] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 118.458308][T10988] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 118.518222][T10988] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 118.603232][T10988] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.611628][T10988] bridge0: port 2(bridge_slave_1) entered forwarding state [ 118.619916][T10988] bridge0: port 1(bridge_slave_0) entered blocking state [ 118.627417][T10988] bridge0: port 1(bridge_slave_0) entered forwarding state [ 118.694597][T10988] 8021q: adding VLAN 0 to HW filter on device bond0 [ 118.712844][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.725931][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 118.736363][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.747420][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 118.766837][T10988] 8021q: adding VLAN 0 to HW filter on device team0 [ 118.779647][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 118.789796][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 118.799105][ T2734] bridge0: port 1(bridge_slave_0) entered blocking state [ 118.806285][ T2734] bridge0: port 1(bridge_slave_0) entered forwarding state [ 118.820928][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 118.831975][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 118.841605][ T3396] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.848910][ T3396] bridge0: port 2(bridge_slave_1) entered forwarding state [ 118.873853][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 118.884686][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 118.895163][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 118.907206][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 118.929310][T10988] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 118.940531][T10988] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 118.955475][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 118.965688][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 118.976144][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 118.986793][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 118.996246][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 119.007033][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 119.015963][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 119.026964][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 119.054598][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 119.062304][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 119.081729][T10988] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 119.108221][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 119.119389][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 119.148971][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 119.159177][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 119.170118][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 119.179369][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 119.196310][T10988] device veth0_vlan entered promiscuous mode [ 119.213126][T10988] device veth1_vlan entered promiscuous mode [ 119.244166][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 119.252994][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 119.262421][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 119.272107][ T2734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 119.286924][T10988] device veth0_macvtap entered promiscuous mode [ 119.300682][T10988] device veth1_macvtap entered promiscuous mode [ 119.327572][T10988] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 119.335885][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 119.345896][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 119.355399][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 119.366051][ T3396] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 119.381041][T10988] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 119.390778][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 119.400641][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 119.644131][ C0] ===================================================== [ 119.651519][ C0] BUG: KMSAN: use-after-free in find_match+0x317/0x1480 [ 119.658631][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.6.0-rc2-syzkaller #0 [ 119.666694][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.677281][ C0] Call Trace: [ 119.680629][ C0] dump_stack+0x1c9/0x220 [ 119.685168][ C0] kmsan_report+0xf7/0x1e0 [ 119.689621][ C0] __msan_warning+0x58/0xa0 [ 119.694135][ C0] find_match+0x317/0x1480 [ 119.698562][ C0] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 119.704717][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 119.709930][ C0] __find_rr_leaf+0x3f9/0x1160 [ 119.715163][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 119.720278][ C0] fib6_table_lookup+0x586/0x1420 [ 119.730319][ C0] ip6_pol_route+0x203/0x2960 [ 119.736065][ C0] ? nf_ip6_checksum+0x501/0x610 [ 119.741345][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 119.746698][ C0] ip6_pol_route_input+0x123/0x140 [ 119.751821][ C0] fib6_rule_lookup+0x38f/0xa10 [ 119.756907][ C0] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 119.762483][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 119.767683][ C0] ip6_route_input+0xb9d/0xcf0 [ 119.772591][ C0] ? ipvlan_l3_rcv+0x660/0xb70 [ 119.777570][ C0] ip6_rcv_finish_core+0x1f9/0x470 [ 119.782865][ C0] ? ipvlan_ns_exit+0x160/0x160 [ 119.787835][ C0] ipv6_rcv+0x628/0x710 [ 119.793133][ C0] ? local_bh_enable+0x40/0x40 [ 119.797996][ C0] process_backlog+0xa41/0x1410 [ 119.802894][ C0] ? __list_add_valid+0xb8/0x420 [ 119.808084][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 119.813318][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 119.818969][ C0] ? rps_trigger_softirq+0x2e0/0x2e0 [ 119.824478][ C0] net_rx_action+0x786/0x1aa0 [ 119.834322][ C0] ? net_tx_action+0xc30/0xc30 [ 119.839291][ C0] __do_softirq+0x311/0x83d [ 119.843894][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 119.849565][ C0] ? takeover_tasklets+0x8f0/0x8f0 [ 119.854769][ C0] run_ksoftirqd+0x25/0x40 [ 119.859451][ C0] smpboot_thread_fn+0x493/0x980 [ 119.864400][ C0] kthread+0x4b5/0x4f0 [ 119.868463][ C0] ? cpu_report_death+0x180/0x180 [ 119.873500][ C0] ? kthread_blkcg+0xf0/0xf0 [ 119.878182][ C0] ret_from_fork+0x35/0x40 [ 119.882592][ C0] [ 119.885033][ C0] Uninit was created at: [ 119.889270][ C0] kmsan_internal_poison_shadow+0x66/0xd0 [ 119.894979][ C0] kmsan_slab_free+0x6e/0xb0 [ 119.900713][ C0] kfree+0x565/0x30a0 [ 119.905839][ C0] netdev_name_node_alt_destroy+0x587/0x690 [ 119.911946][ C0] rtnl_linkprop+0x939/0xc00 [ 119.916706][ C0] rtnl_dellinkprop+0x9d/0xb0 [ 119.921866][ C0] rtnetlink_rcv_msg+0x1153/0x1570 [ 119.927260][ C0] netlink_rcv_skb+0x451/0x650 [ 119.932223][ C0] rtnetlink_rcv+0x50/0x60 [ 119.936650][ C0] netlink_unicast+0xf9e/0x1100 [ 119.941623][ C0] netlink_sendmsg+0x1246/0x14d0 [ 119.946576][ C0] ____sys_sendmsg+0x12b6/0x1350 [ 119.951509][ C0] __sys_sendmsg+0x451/0x5f0 [ 119.956095][ C0] __se_sys_sendmsg+0x97/0xb0 [ 119.960800][ C0] __x64_sys_sendmsg+0x4a/0x70 [ 119.965560][ C0] do_syscall_64+0xb8/0x160 [ 119.970053][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 119.975927][ C0] ===================================================== [ 119.982916][ C0] Disabling lock debugging due to kernel taint [ 119.993142][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 120.000057][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 120.009503][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 120.019561][ C0] Call Trace: [ 120.023119][ C0] dump_stack+0x1c9/0x220 [ 120.027455][ C0] panic+0x3d5/0xc3e [ 120.031503][ C0] kmsan_report+0x1df/0x1e0 [ 120.036662][ C0] __msan_warning+0x58/0xa0 [ 120.041166][ C0] find_match+0x317/0x1480 [ 120.045625][ C0] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 120.051775][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 120.056978][ C0] __find_rr_leaf+0x3f9/0x1160 [ 120.061834][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 120.067077][ C0] fib6_table_lookup+0x586/0x1420 [ 120.072119][ C0] ip6_pol_route+0x203/0x2960 [ 120.076855][ C0] ? nf_ip6_checksum+0x501/0x610 [ 120.081922][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 120.087179][ C0] ip6_pol_route_input+0x123/0x140 [ 120.092406][ C0] fib6_rule_lookup+0x38f/0xa10 [ 120.097279][ C0] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 120.102866][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 120.108370][ C0] ip6_route_input+0xb9d/0xcf0 [ 120.113204][ C0] ? ipvlan_l3_rcv+0x660/0xb70 [ 120.118014][ C0] ip6_rcv_finish_core+0x1f9/0x470 [ 120.123223][ C0] ? ipvlan_ns_exit+0x160/0x160 [ 120.129035][ C0] ipv6_rcv+0x628/0x710 [ 120.133227][ C0] ? local_bh_enable+0x40/0x40 [ 120.138379][ C0] process_backlog+0xa41/0x1410 [ 120.143430][ C0] ? __list_add_valid+0xb8/0x420 [ 120.148594][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 120.153706][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 120.159488][ C0] ? rps_trigger_softirq+0x2e0/0x2e0 [ 120.164860][ C0] net_rx_action+0x786/0x1aa0 [ 120.169582][ C0] ? net_tx_action+0xc30/0xc30 [ 120.174347][ C0] __do_softirq+0x311/0x83d [ 120.179000][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 120.184221][ C0] ? takeover_tasklets+0x8f0/0x8f0 [ 120.189524][ C0] run_ksoftirqd+0x25/0x40 [ 120.194490][ C0] smpboot_thread_fn+0x493/0x980 [ 120.199601][ C0] kthread+0x4b5/0x4f0 [ 120.203782][ C0] ? cpu_report_death+0x180/0x180 [ 120.208980][ C0] ? kthread_blkcg+0xf0/0xf0 [ 120.214406][ C0] ret_from_fork+0x35/0x40 [ 120.220485][ C0] Kernel Offset: 0x9a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 120.232267][ C0] Rebooting in 86400 seconds..