[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 123.776629][ T32] kauditd_printk_skb: 4 callbacks suppressed [ 123.776678][ T32] audit: type=1800 audit(1583613747.825:39): pid=11356 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 123.805200][ T32] audit: type=1800 audit(1583613747.835:40): pid=11356 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [ 124.897695][ T32] audit: type=1400 audit(1583613748.945:41): avc: denied { map } for pid=11531 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.75' (ECDSA) to the list of known hosts. syzkaller login: [ 133.590539][ T32] audit: type=1400 audit(1583613757.635:42): avc: denied { map } for pid=11543 comm="syz-executor035" path="/root/syz-executor035659714" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 133.631856][T11544] IPVS: ftp: loaded support on port[0] = 21 [ 133.680755][ T32] audit: type=1400 audit(1583613757.725:43): avc: denied { create } for pid=11544 comm="syz-executor035" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 133.705814][ T32] audit: type=1400 audit(1583613757.725:44): avc: denied { write } for pid=11544 comm="syz-executor035" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 133.730772][ T32] audit: type=1400 audit(1583613757.735:45): avc: denied { read } for pid=11544 comm="syz-executor035" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 133.775824][T11544] chnl_net:caif_netlink_parms(): no params data found [ 133.857973][T11544] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.865284][T11544] bridge0: port 1(bridge_slave_0) entered disabled state [ 133.874673][T11544] device bridge_slave_0 entered promiscuous mode [ 133.885999][T11544] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.893338][T11544] bridge0: port 2(bridge_slave_1) entered disabled state [ 133.903987][T11544] device bridge_slave_1 entered promiscuous mode [ 133.934516][T11544] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 133.948457][T11544] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 133.978153][T11544] team0: Port device team_slave_0 added [ 133.988577][T11544] team0: Port device team_slave_1 added [ 134.014090][T11544] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 134.021242][T11544] 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. [ 134.047743][T11544] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 134.062103][T11544] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 134.069508][T11544] 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. [ 134.095757][T11544] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 134.147185][T11544] device hsr_slave_0 entered promiscuous mode [ 134.213230][T11544] device hsr_slave_1 entered promiscuous mode [ 134.421638][T11544] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 134.458195][T11544] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 134.518191][T11544] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 134.608467][T11544] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 134.700711][T11544] bridge0: port 2(bridge_slave_1) entered blocking state [ 134.708127][T11544] bridge0: port 2(bridge_slave_1) entered forwarding state [ 134.715973][T11544] bridge0: port 1(bridge_slave_0) entered blocking state [ 134.723246][T11544] bridge0: port 1(bridge_slave_0) entered forwarding state [ 134.821575][T11544] 8021q: adding VLAN 0 to HW filter on device bond0 [ 134.830061][ T28] bridge0: port 1(bridge_slave_0) entered disabled state [ 134.842021][ T28] bridge0: port 2(bridge_slave_1) entered disabled state [ 134.855071][ T28] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 134.880840][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 134.889438][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 134.904975][T11544] 8021q: adding VLAN 0 to HW filter on device team0 [ 134.924078][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 134.933850][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 134.943141][T11550] bridge0: port 1(bridge_slave_0) entered blocking state [ 134.950288][T11550] bridge0: port 1(bridge_slave_0) entered forwarding state [ 134.965820][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 134.975251][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 134.984560][ T3916] bridge0: port 2(bridge_slave_1) entered blocking state [ 134.991860][ T3916] bridge0: port 2(bridge_slave_1) entered forwarding state [ 135.017558][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 135.027240][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 135.045049][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 135.054804][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 135.074746][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 135.084365][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 135.094849][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 135.111653][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 135.121322][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 135.144160][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 135.156356][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 135.168391][T11544] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 135.205658][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 135.214411][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 135.238557][T11544] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 135.279237][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 135.289275][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 135.326477][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 135.335925][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 135.348159][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 135.356759][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 135.368669][T11544] device veth0_vlan entered promiscuous mode [ 135.390735][T11544] device veth1_vlan entered promiscuous mode [ 135.436193][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 135.445086][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 135.454524][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 135.463996][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 135.480756][T11544] device veth0_macvtap entered promiscuous mode [ 135.498237][T11544] device veth1_macvtap entered promiscuous mode [ 135.532834][T11544] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 135.540642][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 135.551265][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 135.560878][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 135.570153][T11550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 135.590799][T11544] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 135.598609][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 135.608730][ T3916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 135.853127][ C1] ===================================================== [ 135.860104][ C1] BUG: KMSAN: use-after-free in find_match+0x317/0x1480 [ 135.867024][ C1] CPU: 1 PID: 11550 Comm: kworker/1:3 Not tainted 5.6.0-rc2-syzkaller #0 [ 135.875471][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 135.885607][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 135.892087][ C1] Call Trace: [ 135.895363][ C1] [ 135.898221][ C1] dump_stack+0x1c9/0x220 [ 135.902729][ C1] kmsan_report+0xf7/0x1e0 [ 135.907161][ C1] __msan_warning+0x58/0xa0 [ 135.911748][ C1] find_match+0x317/0x1480 [ 135.916605][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 135.921806][ C1] __find_rr_leaf+0x3f9/0x1160 [ 135.926567][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 135.932453][ C1] fib6_table_lookup+0x586/0x1420 [ 135.937482][ C1] ip6_pol_route+0x203/0x2960 [ 135.942171][ C1] ip6_pol_route_input+0x123/0x140 [ 135.947283][ C1] fib6_rule_lookup+0x38f/0xa10 [ 135.952113][ C1] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 135.957647][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 135.962933][ C1] ip6_route_input+0xb9d/0xcf0 [ 135.967711][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 135.973369][ C1] ip6_rcv_finish_core+0x1f9/0x470 [ 135.978489][ C1] ipv6_rcv+0x628/0x710 [ 135.982763][ C1] ? local_bh_enable+0x40/0x40 [ 135.987753][ C1] process_backlog+0xa41/0x1410 [ 135.992694][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 135.997795][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.003063][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 136.008326][ C1] net_rx_action+0x786/0x1aa0 [ 136.012993][ C1] ? net_tx_action+0xc30/0xc30 [ 136.017748][ C1] __do_softirq+0x311/0x83d [ 136.022301][ C1] do_softirq_own_stack+0x49/0x80 [ 136.027325][ C1] [ 136.030385][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 136.035704][ C1] local_bh_enable+0x36/0x40 [ 136.040344][ C1] ip6_finish_output2+0x2113/0x2640 [ 136.045567][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.051003][ C1] __ip6_finish_output+0x824/0x8e0 [ 136.056329][ C1] ip6_finish_output+0x166/0x410 [ 136.061277][ C1] ip6_output+0x60a/0x770 [ 136.065727][ C1] ? ip6_output+0x770/0x770 [ 136.070244][ C1] ? ac6_seq_show+0x200/0x200 [ 136.076075][ C1] ndisc_send_skb+0x1047/0x15a0 [ 136.081042][ C1] ? ndisc_error_report+0x1a0/0x1a0 [ 136.086897][ C1] ndisc_send_ns+0xe38/0xe80 [ 136.091481][ C1] ? __queue_delayed_work+0x27f/0x450 [ 136.097041][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 136.103453][ C1] addrconf_dad_work+0xc0b/0x2aa0 [ 136.108461][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.113657][ C1] ? ipv6_get_saddr_eval+0x1350/0x1350 [ 136.119099][ C1] process_one_work+0x1555/0x1f40 [ 136.124155][ C1] worker_thread+0xef6/0x2450 [ 136.128842][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 136.134647][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.139842][ C1] kthread+0x4b5/0x4f0 [ 136.143905][ C1] ? process_one_work+0x1f40/0x1f40 [ 136.149091][ C1] ? kthread_blkcg+0xf0/0xf0 [ 136.153675][ C1] ret_from_fork+0x35/0x40 [ 136.158163][ C1] [ 136.160562][ C1] Uninit was created at: [ 136.164805][ C1] kmsan_internal_poison_shadow+0x66/0xd0 [ 136.170912][ C1] kmsan_slab_free+0x6e/0xb0 [ 136.176636][ C1] kfree+0x565/0x30a0 [ 136.180624][ C1] netdev_name_node_alt_destroy+0x587/0x690 [ 136.186510][ C1] rtnl_linkprop+0x939/0xc00 [ 136.191260][ C1] rtnl_dellinkprop+0x9d/0xb0 [ 136.195997][ C1] rtnetlink_rcv_msg+0x1153/0x1570 [ 136.201104][ C1] netlink_rcv_skb+0x451/0x650 [ 136.205855][ C1] rtnetlink_rcv+0x50/0x60 [ 136.210467][ C1] netlink_unicast+0xf9e/0x1100 [ 136.215304][ C1] netlink_sendmsg+0x1246/0x14d0 [ 136.220310][ C1] ____sys_sendmsg+0x12b6/0x1350 [ 136.225249][ C1] __sys_sendmsg+0x451/0x5f0 [ 136.229829][ C1] __ia32_compat_sys_sendmsg+0xed/0x130 [ 136.235367][ C1] do_fast_syscall_32+0x3c7/0x6e0 [ 136.240388][ C1] entry_SYSENTER_compat+0x68/0x77 [ 136.245509][ C1] ===================================================== [ 136.252427][ C1] Disabling lock debugging due to kernel taint [ 136.258664][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 136.265332][ C1] CPU: 1 PID: 11550 Comm: kworker/1:3 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 136.275108][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.285327][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 136.291284][ C1] Call Trace: [ 136.294549][ C1] [ 136.297400][ C1] dump_stack+0x1c9/0x220 [ 136.301715][ C1] panic+0x3d5/0xc3e [ 136.305609][ C1] kmsan_report+0x1df/0x1e0 [ 136.310185][ C1] __msan_warning+0x58/0xa0 [ 136.314675][ C1] find_match+0x317/0x1480 [ 136.319085][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.324292][ C1] __find_rr_leaf+0x3f9/0x1160 [ 136.329066][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 136.334174][ C1] fib6_table_lookup+0x586/0x1420 [ 136.339216][ C1] ip6_pol_route+0x203/0x2960 [ 136.343895][ C1] ip6_pol_route_input+0x123/0x140 [ 136.349006][ C1] fib6_rule_lookup+0x38f/0xa10 [ 136.353862][ C1] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 136.359481][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.364675][ C1] ip6_route_input+0xb9d/0xcf0 [ 136.369513][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.374699][ C1] ip6_rcv_finish_core+0x1f9/0x470 [ 136.379809][ C1] ipv6_rcv+0x628/0x710 [ 136.384114][ C1] ? local_bh_enable+0x40/0x40 [ 136.388894][ C1] process_backlog+0xa41/0x1410 [ 136.393732][ C1] ? kmsan_get_metadata+0x4f/0x180 [ 136.398841][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.404355][ C1] ? rps_trigger_softirq+0x2e0/0x2e0 [ 136.409652][ C1] net_rx_action+0x786/0x1aa0 [ 136.414373][ C1] ? net_tx_action+0xc30/0xc30 [ 136.419143][ C1] __do_softirq+0x311/0x83d [ 136.423644][ C1] do_softirq_own_stack+0x49/0x80 [ 136.428715][ C1] [ 136.431785][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 136.436992][ C1] local_bh_enable+0x36/0x40 [ 136.442034][ C1] ip6_finish_output2+0x2113/0x2640 [ 136.447260][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.452468][ C1] __ip6_finish_output+0x824/0x8e0 [ 136.457579][ C1] ip6_finish_output+0x166/0x410 [ 136.462529][ C1] ip6_output+0x60a/0x770 [ 136.466872][ C1] ? ip6_output+0x770/0x770 [ 136.471354][ C1] ? ac6_seq_show+0x200/0x200 [ 136.476035][ C1] ndisc_send_skb+0x1047/0x15a0 [ 136.480885][ C1] ? ndisc_error_report+0x1a0/0x1a0 [ 136.486123][ C1] ndisc_send_ns+0xe38/0xe80 [ 136.490732][ C1] ? __queue_delayed_work+0x27f/0x450 [ 136.496126][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 136.501943][ C1] addrconf_dad_work+0xc0b/0x2aa0 [ 136.506955][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.512159][ C1] ? ipv6_get_saddr_eval+0x1350/0x1350 [ 136.517602][ C1] process_one_work+0x1555/0x1f40 [ 136.522633][ C1] worker_thread+0xef6/0x2450 [ 136.527311][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 136.533113][ C1] ? kmsan_get_metadata+0x11d/0x180 [ 136.538463][ C1] kthread+0x4b5/0x4f0 [ 136.542601][ C1] ? process_one_work+0x1f40/0x1f40 [ 136.549215][ C1] ? kthread_blkcg+0xf0/0xf0 [ 136.554477][ C1] ret_from_fork+0x35/0x40 [ 136.561451][ C1] Kernel Offset: 0x15000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 136.573104][ C1] Rebooting in 86400 seconds..