[ 106.142658][ T32] audit: type=1800 audit(1584344723.202:25): pid=11139 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 106.175111][ T32] audit: type=1800 audit(1584344723.232:26): pid=11139 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 106.215162][ T32] audit: type=1800 audit(1584344723.262:27): pid=11139 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 106.881937][T11197] cron (11197) used greatest stack depth: 3352 bytes left [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.225' (ECDSA) to the list of known hosts. syzkaller login: [ 118.888011][T11291] IPVS: ftp: loaded support on port[0] = 21 [ 118.981453][T11291] chnl_net:caif_netlink_parms(): no params data found [ 119.057400][T11291] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.065281][T11291] bridge0: port 1(bridge_slave_0) entered disabled state [ 119.073697][T11291] device bridge_slave_0 entered promiscuous mode [ 119.082775][T11291] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.090054][T11291] bridge0: port 2(bridge_slave_1) entered disabled state [ 119.098917][T11291] device bridge_slave_1 entered promiscuous mode [ 119.126004][T11291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 119.138284][T11291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 119.165703][T11291] team0: Port device team_slave_0 added [ 119.173989][T11291] team0: Port device team_slave_1 added [ 119.196260][T11291] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 119.203274][T11291] 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. [ 119.229566][T11291] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 119.241746][T11291] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 119.249102][T11291] 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. [ 119.275562][T11291] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 119.348437][T11291] device hsr_slave_0 entered promiscuous mode [ 119.395440][T11291] device hsr_slave_1 entered promiscuous mode [ 119.542971][T11291] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 119.599482][T11291] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 119.659325][T11291] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 119.719333][T11291] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 119.802188][T11291] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.809754][T11291] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.817598][T11291] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.825121][T11291] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.888915][T11291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 119.907363][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 119.918771][ T30] bridge0: port 1(bridge_slave_0) entered disabled state [ 119.928471][ T30] bridge0: port 2(bridge_slave_1) entered disabled state [ 119.938851][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 119.955117][T11291] 8021q: adding VLAN 0 to HW filter on device team0 [ 119.969356][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 119.979361][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.989131][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.996405][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.011692][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 120.020997][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 120.030540][ T3554] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.037825][ T3554] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.053670][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 120.078384][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 120.088072][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 120.098053][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 120.108297][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 120.118064][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 120.132956][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 120.154054][T11291] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 120.164654][T11291] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 120.180835][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 120.190289][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 120.199875][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 120.210667][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 120.220582][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 120.244856][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 120.252542][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 120.270534][T11291] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 120.296438][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 120.306617][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 120.334176][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 120.343813][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 120.357657][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 120.366280][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 120.378061][T11291] device veth0_vlan entered promiscuous mode [ 120.393394][T11291] device veth1_vlan entered promiscuous mode [ 120.422642][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 120.432303][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 120.441487][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 120.451137][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 120.463731][T11291] device veth0_macvtap entered promiscuous mode [ 120.477360][T11291] device veth1_macvtap entered promiscuous mode [ 120.502607][T11291] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 120.510443][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 120.519686][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 120.528521][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 120.538229][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 120.553488][T11291] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 120.561294][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 120.570985][ T3554] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 120.795801][ C1] ===================================================== [ 120.802914][ C1] BUG: KMSAN: use-after-free in find_match+0x317/0x1480 [ 120.809869][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.6.0-rc2-syzkaller #0 [ 120.818091][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 120.828139][ C1] Call Trace: [ 120.831411][ C1] dump_stack+0x1c9/0x220 [ 120.835726][ C1] kmsan_report+0xf7/0x1e0 [ 120.840124][ C1] __msan_warning+0x58/0xa0 [ 120.844609][ C1] find_match+0x317/0x1480 [ 120.849010][ C1] ? veth_xmit+0x6e1/0xb70 [ 120.853411][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 120.858601][ C1] __find_rr_leaf+0x3f9/0x1160 [ 120.863356][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 120.868452][ C1] fib6_table_lookup+0x586/0x1420 [ 120.873478][ C1] ip6_pol_route+0x203/0x2960 [ 120.878133][ C1] ? br_nf_dev_queue_xmit+0x693/0x1910 [ 120.883591][ C1] ip6_pol_route_input+0x123/0x140 [ 120.888691][ C1] fib6_rule_lookup+0x38f/0xa10 [ 120.893522][ C1] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 120.899054][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 120.904245][ C1] ip6_route_input+0xb9d/0xcf0 [ 120.909009][ C1] ip6_rcv_finish_core+0x1f9/0x470 [ 120.914104][ C1] ip6_rcv_finish+0x2e8/0x3b0 [ 120.918768][ C1] ip_sabotage_in+0x2f6/0x350 [ 120.923426][ C1] ? local_bh_enable+0x40/0x40 [ 120.928171][ C1] ? br_nf_post_routing+0x17e0/0x17e0 [ 120.933534][ C1] nf_hook_slow+0x16e/0x400 [ 120.938028][ C1] ipv6_rcv+0x273/0x710 [ 120.942169][ C1] ? local_bh_enable+0x40/0x40 [ 120.946916][ C1] netif_receive_skb+0x66b/0xf20 [ 120.951835][ C1] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 120.957890][ C1] ? nf_hook_slow+0x385/0x400 [ 120.962555][ C1] br_pass_frame_up+0x964/0x9c0 [ 120.967393][ C1] ? br_handle_local_finish+0x3f0/0x3f0 [ 120.972934][ C1] br_handle_frame_finish+0x1a37/0x1bb0 [ 120.978485][ C1] ? brport_get_ownership+0xf0/0xf0 [ 120.983661][ C1] ? brport_get_ownership+0xf0/0xf0 [ 120.988839][ C1] br_nf_hook_thresh+0x4f7/0x680 [ 120.993768][ C1] ? brport_get_ownership+0xf0/0xf0 [ 120.998950][ C1] br_nf_pre_routing_finish_ipv6+0xe72/0x1000 [ 121.005055][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.010248][ C1] br_nf_pre_routing_ipv6+0x6ad/0x7f0 [ 121.015611][ C1] ? br_nf_pre_routing_ipv6+0x7f0/0x7f0 [ 121.021138][ C1] br_nf_pre_routing+0xd0e/0x1fd0 [ 121.026158][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.031338][ C1] ? brnf_device_event+0x3c0/0x3c0 [ 121.036428][ C1] br_handle_frame+0xcd2/0x2050 [ 121.041284][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.046475][ C1] ? br_pass_frame_up+0x9c0/0x9c0 [ 121.051480][ C1] __netif_receive_skb_core+0x21de/0x5840 [ 121.057195][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.062387][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.068437][ C1] ? __msan_poison_alloca+0xf0/0x120 [ 121.073845][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 121.078951][ C1] process_backlog+0x936/0x1410 [ 121.083792][ C1] ? __list_add_valid+0xb8/0x420 [ 121.088718][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 121.093815][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.099001][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 121.104267][ C1] net_rx_action+0x786/0x1aa0 [ 121.108973][ C1] ? net_tx_action+0xc30/0xc30 [ 121.113735][ C1] __do_softirq+0x311/0x83d [ 121.118248][ C1] ? ksoftirqd_should_run+0x30/0x30 [ 121.123507][ C1] ? takeover_tasklets+0x8f0/0x8f0 [ 121.128626][ C1] run_ksoftirqd+0x25/0x40 [ 121.133043][ C1] smpboot_thread_fn+0x493/0x980 [ 121.137976][ C1] kthread+0x4b5/0x4f0 [ 121.142026][ C1] ? cpu_report_death+0x180/0x180 [ 121.147038][ C1] ? kthread_blkcg+0xf0/0xf0 [ 121.151612][ C1] ret_from_fork+0x35/0x40 [ 121.156013][ C1] [ 121.158325][ C1] Uninit was created at: [ 121.162549][ C1] kmsan_internal_poison_shadow+0x66/0xd0 [ 121.168246][ C1] kmsan_slab_free+0x6e/0xb0 [ 121.172811][ C1] kfree+0x565/0x30a0 [ 121.176775][ C1] netdev_name_node_alt_destroy+0x587/0x690 [ 121.182657][ C1] rtnl_linkprop+0x939/0xc00 [ 121.187235][ C1] rtnl_dellinkprop+0x9d/0xb0 [ 121.191890][ C1] rtnetlink_rcv_msg+0x1153/0x1570 [ 121.197067][ C1] netlink_rcv_skb+0x451/0x650 [ 121.201808][ C1] rtnetlink_rcv+0x50/0x60 [ 121.206208][ C1] netlink_unicast+0xf9e/0x1100 [ 121.211061][ C1] netlink_sendmsg+0x1246/0x14d0 [ 121.215983][ C1] ____sys_sendmsg+0x12b6/0x1350 [ 121.220908][ C1] __sys_sendmsg+0x451/0x5f0 [ 121.225481][ C1] __se_sys_sendmsg+0x97/0xb0 [ 121.230154][ C1] __x64_sys_sendmsg+0x4a/0x70 [ 121.234899][ C1] do_syscall_64+0xb8/0x160 [ 121.239411][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.245284][ C1] ===================================================== [ 121.252214][ C1] Disabling lock debugging due to kernel taint [ 121.258348][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 121.264931][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 121.274487][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.284557][ C1] Call Trace: [ 121.287848][ C1] dump_stack+0x1c9/0x220 [ 121.292175][ C1] panic+0x3d5/0xc3e [ 121.296100][ C1] kmsan_report+0x1df/0x1e0 [ 121.300613][ C1] __msan_warning+0x58/0xa0 [ 121.305121][ C1] find_match+0x317/0x1480 [ 121.309532][ C1] ? veth_xmit+0x6e1/0xb70 [ 121.314192][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.319389][ C1] __find_rr_leaf+0x3f9/0x1160 [ 121.324150][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 121.329355][ C1] fib6_table_lookup+0x586/0x1420 [ 121.334391][ C1] ip6_pol_route+0x203/0x2960 [ 121.339048][ C1] ? br_nf_dev_queue_xmit+0x693/0x1910 [ 121.344507][ C1] ip6_pol_route_input+0x123/0x140 [ 121.349958][ C1] fib6_rule_lookup+0x38f/0xa10 [ 121.354789][ C1] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 121.360323][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.365506][ C1] ip6_route_input+0xb9d/0xcf0 [ 121.370268][ C1] ip6_rcv_finish_core+0x1f9/0x470 [ 121.375365][ C1] ip6_rcv_finish+0x2e8/0x3b0 [ 121.380037][ C1] ip_sabotage_in+0x2f6/0x350 [ 121.384713][ C1] ? local_bh_enable+0x40/0x40 [ 121.389471][ C1] ? br_nf_post_routing+0x17e0/0x17e0 [ 121.394836][ C1] nf_hook_slow+0x16e/0x400 [ 121.399374][ C1] ipv6_rcv+0x273/0x710 [ 121.403536][ C1] ? local_bh_enable+0x40/0x40 [ 121.408416][ C1] netif_receive_skb+0x66b/0xf20 [ 121.413343][ C1] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 121.419396][ C1] ? nf_hook_slow+0x385/0x400 [ 121.424082][ C1] br_pass_frame_up+0x964/0x9c0 [ 121.428944][ C1] ? br_handle_local_finish+0x3f0/0x3f0 [ 121.434496][ C1] br_handle_frame_finish+0x1a37/0x1bb0 [ 121.440071][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.445255][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.450829][ C1] br_nf_hook_thresh+0x4f7/0x680 [ 121.455764][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.460944][ C1] br_nf_pre_routing_finish_ipv6+0xe72/0x1000 [ 121.467002][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.472193][ C1] br_nf_pre_routing_ipv6+0x6ad/0x7f0 [ 121.477569][ C1] ? br_nf_pre_routing_ipv6+0x7f0/0x7f0 [ 121.483165][ C1] br_nf_pre_routing+0xd0e/0x1fd0 [ 121.488206][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.493439][ C1] ? brnf_device_event+0x3c0/0x3c0 [ 121.498551][ C1] br_handle_frame+0xcd2/0x2050 [ 121.503398][ C1] ? brport_get_ownership+0xf0/0xf0 [ 121.508578][ C1] ? br_pass_frame_up+0x9c0/0x9c0 [ 121.513601][ C1] __netif_receive_skb_core+0x21de/0x5840 [ 121.519306][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.524484][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.530279][ C1] ? __msan_poison_alloca+0xf0/0x120 [ 121.535543][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 121.540662][ C1] process_backlog+0x936/0x1410 [ 121.545511][ C1] ? __list_add_valid+0xb8/0x420 [ 121.550456][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 121.555560][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 121.560748][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 121.566031][ C1] net_rx_action+0x786/0x1aa0 [ 121.570707][ C1] ? net_tx_action+0xc30/0xc30 [ 121.575475][ C1] __do_softirq+0x311/0x83d [ 121.579996][ C1] ? ksoftirqd_should_run+0x30/0x30 [ 121.585177][ C1] ? takeover_tasklets+0x8f0/0x8f0 [ 121.590268][ C1] run_ksoftirqd+0x25/0x40 [ 121.594687][ C1] smpboot_thread_fn+0x493/0x980 [ 121.599642][ C1] kthread+0x4b5/0x4f0 [ 121.603712][ C1] ? cpu_report_death+0x180/0x180 [ 121.608732][ C1] ? kthread_blkcg+0xf0/0xf0 [ 121.613361][ C1] ret_from_fork+0x35/0x40 [ 121.619171][ C1] Kernel Offset: 0x11c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 121.630788][ C1] Rebooting in 86400 seconds..