[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 120.554440][ T32] kauditd_printk_skb: 4 callbacks suppressed [ 120.554489][ T32] audit: type=1800 audit(1582699064.624:39): pid=11106 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 [ 120.604707][ T32] audit: type=1800 audit(1582699064.654:40): pid=11106 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 [ 121.709303][ T32] audit: type=1400 audit(1582699065.774:41): avc: denied { map } for pid=11280 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 '10.128.0.162' (ECDSA) to the list of known hosts. syzkaller login: [ 130.104283][ T32] audit: type=1400 audit(1582699074.174:42): avc: denied { map } for pid=11292 comm="syz-executor089" path="/root/syz-executor089024935" 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 [ 130.147858][T11293] IPVS: ftp: loaded support on port[0] = 21 [ 130.241452][T11293] chnl_net:caif_netlink_parms(): no params data found [ 130.324145][T11293] bridge0: port 1(bridge_slave_0) entered blocking state [ 130.331292][T11293] bridge0: port 1(bridge_slave_0) entered disabled state [ 130.339950][T11293] device bridge_slave_0 entered promiscuous mode [ 130.350614][T11293] bridge0: port 2(bridge_slave_1) entered blocking state [ 130.357992][T11293] bridge0: port 2(bridge_slave_1) entered disabled state [ 130.366394][T11293] device bridge_slave_1 entered promiscuous mode [ 130.395835][T11293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 130.409828][T11293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 130.438816][T11293] team0: Port device team_slave_0 added [ 130.448864][T11293] team0: Port device team_slave_1 added [ 130.473443][T11293] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 130.480453][T11293] 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. [ 130.506569][T11293] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 130.520713][T11293] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 130.527952][T11293] 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. [ 130.554353][T11293] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 130.626148][T11293] device hsr_slave_0 entered promiscuous mode [ 130.672782][T11293] device hsr_slave_1 entered promiscuous mode [ 130.837696][ T32] audit: type=1400 audit(1582699074.904:43): avc: denied { create } for pid=11293 comm="syz-executor089" 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 [ 130.864282][ T32] audit: type=1400 audit(1582699074.934:44): avc: denied { write } for pid=11293 comm="syz-executor089" 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 [ 130.868122][T11293] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 130.889305][ T32] audit: type=1400 audit(1582699074.934:45): avc: denied { read } for pid=11293 comm="syz-executor089" 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 [ 130.927629][T11293] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 130.998100][T11293] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 131.057832][T11293] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 131.161787][T11293] bridge0: port 2(bridge_slave_1) entered blocking state [ 131.168989][T11293] bridge0: port 2(bridge_slave_1) entered forwarding state [ 131.176813][T11293] bridge0: port 1(bridge_slave_0) entered blocking state [ 131.184063][T11293] bridge0: port 1(bridge_slave_0) entered forwarding state [ 131.281875][T11293] 8021q: adding VLAN 0 to HW filter on device bond0 [ 131.296077][ T31] bridge0: port 1(bridge_slave_0) entered disabled state [ 131.306018][ T31] bridge0: port 2(bridge_slave_1) entered disabled state [ 131.317081][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 131.339274][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 131.347615][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 131.363985][T11293] 8021q: adding VLAN 0 to HW filter on device team0 [ 131.380298][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 131.389982][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 131.399727][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 131.406989][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 131.425918][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 131.435198][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 131.444511][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 131.451705][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 131.485046][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 131.496185][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 131.506354][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 131.516101][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 131.528558][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 131.542915][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 131.553266][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 131.574893][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 131.584172][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 131.598897][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 131.608473][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 131.624907][T11293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 131.661278][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 131.669090][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 131.691001][T11293] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 131.729081][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 131.739487][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 131.776934][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 131.786528][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 131.798512][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 131.807385][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 131.819893][T11293] device veth0_vlan entered promiscuous mode [ 131.841357][T11293] device veth1_vlan entered promiscuous mode [ 131.887805][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 131.897129][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 131.906165][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 131.915434][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 131.930759][T11293] device veth0_macvtap entered promiscuous mode [ 131.946660][T11293] device veth1_macvtap entered promiscuous mode [ 131.982762][T11293] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 131.990691][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 131.999883][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 132.008665][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 132.018078][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 132.038590][T11293] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 132.046270][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 132.055989][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 132.290401][ C0] ===================================================== [ 132.297406][ C0] BUG: KMSAN: use-after-free in find_match+0x317/0x1480 [ 132.304326][ C0] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc2-syzkaller #0 [ 132.312460][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 132.322505][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 132.328464][ C0] Call Trace: [ 132.331733][ C0] [ 132.334577][ C0] dump_stack+0x1c9/0x220 [ 132.338896][ C0] kmsan_report+0xf7/0x1e0 [ 132.343307][ C0] __msan_warning+0x58/0xa0 [ 132.347824][ C0] find_match+0x317/0x1480 [ 132.352241][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.357428][ C0] __find_rr_leaf+0x3f9/0x1160 [ 132.362200][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 132.367294][ C0] fib6_table_lookup+0x586/0x1420 [ 132.372372][ C0] ip6_pol_route+0x203/0x2960 [ 132.377059][ C0] ip6_pol_route_input+0x123/0x140 [ 132.382178][ C0] fib6_rule_lookup+0x38f/0xa10 [ 132.387025][ C0] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 132.392557][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.397778][ C0] ip6_route_input+0xb9d/0xcf0 [ 132.402549][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.407742][ C0] ip6_rcv_finish_core+0x1f9/0x470 [ 132.412840][ C0] ipv6_rcv+0x628/0x710 [ 132.416988][ C0] ? local_bh_enable+0x40/0x40 [ 132.421744][ C0] process_backlog+0xa41/0x1410 [ 132.426581][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 132.431685][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.436872][ C0] ? rps_trigger_softirq+0x2e0/0x2e0 [ 132.442154][ C0] net_rx_action+0x786/0x1aa0 [ 132.446837][ C0] ? net_tx_action+0xc30/0xc30 [ 132.451598][ C0] __do_softirq+0x311/0x83d [ 132.456107][ C0] do_softirq_own_stack+0x49/0x80 [ 132.461112][ C0] [ 132.464042][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 132.469235][ C0] local_bh_enable+0x36/0x40 [ 132.473815][ C0] ip6_finish_output2+0x2113/0x2640 [ 132.479020][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.484205][ C0] __ip6_finish_output+0x824/0x8e0 [ 132.489309][ C0] ip6_finish_output+0x166/0x410 [ 132.494238][ C0] ip6_output+0x60a/0x770 [ 132.498552][ C0] ? ip6_output+0x770/0x770 [ 132.503049][ C0] ? ac6_seq_show+0x200/0x200 [ 132.507710][ C0] ndisc_send_skb+0x1047/0x15a0 [ 132.512562][ C0] ? ndisc_error_report+0x1a0/0x1a0 [ 132.517754][ C0] ndisc_send_ns+0xe38/0xe80 [ 132.522335][ C0] ? __queue_delayed_work+0x27f/0x450 [ 132.527816][ C0] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 132.533619][ C0] addrconf_dad_work+0xc0b/0x2aa0 [ 132.538681][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 132.543784][ C0] ? ipv6_get_saddr_eval+0x1350/0x1350 [ 132.549226][ C0] process_one_work+0x1555/0x1f40 [ 132.554255][ C0] worker_thread+0xef6/0x2450 [ 132.558939][ C0] kthread+0x4b5/0x4f0 [ 132.562986][ C0] ? process_one_work+0x1f40/0x1f40 [ 132.568170][ C0] ? kthread_blkcg+0xf0/0xf0 [ 132.572752][ C0] ret_from_fork+0x35/0x40 [ 132.577155][ C0] [ 132.579462][ C0] Uninit was created at: [ 132.583684][ C0] kmsan_internal_poison_shadow+0x66/0xd0 [ 132.589381][ C0] kmsan_slab_free+0x6e/0xb0 [ 132.593952][ C0] kfree+0x565/0x30a0 [ 132.597924][ C0] netdev_name_node_alt_destroy+0x587/0x690 [ 132.603803][ C0] rtnl_linkprop+0x939/0xc00 [ 132.608373][ C0] rtnl_dellinkprop+0x9d/0xb0 [ 132.613082][ C0] rtnetlink_rcv_msg+0x1153/0x1570 [ 132.618202][ C0] netlink_rcv_skb+0x451/0x650 [ 132.623000][ C0] rtnetlink_rcv+0x50/0x60 [ 132.627548][ C0] netlink_unicast+0xf9e/0x1100 [ 132.632439][ C0] netlink_sendmsg+0x1246/0x14d0 [ 132.637433][ C0] ____sys_sendmsg+0x12b6/0x1350 [ 132.642362][ C0] __sys_sendmsg+0x451/0x5f0 [ 132.647028][ C0] __ia32_compat_sys_sendmsg+0xed/0x130 [ 132.652559][ C0] do_fast_syscall_32+0x3c7/0x6e0 [ 132.657577][ C0] entry_SYSENTER_compat+0x68/0x77 [ 132.662719][ C0] ===================================================== [ 132.669680][ C0] Disabling lock debugging due to kernel taint [ 132.675809][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 132.682380][ C0] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 132.691894][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 132.701976][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 132.707934][ C0] Call Trace: [ 132.711202][ C0] [ 132.714042][ C0] dump_stack+0x1c9/0x220 [ 132.718407][ C0] panic+0x3d5/0xc3e [ 132.722305][ C0] kmsan_report+0x1df/0x1e0 [ 132.726793][ C0] __msan_warning+0x58/0xa0 [ 132.731295][ C0] find_match+0x317/0x1480 [ 132.735715][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.740915][ C0] __find_rr_leaf+0x3f9/0x1160 [ 132.745682][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 132.750857][ C0] fib6_table_lookup+0x586/0x1420 [ 132.755904][ C0] ip6_pol_route+0x203/0x2960 [ 132.760596][ C0] ip6_pol_route_input+0x123/0x140 [ 132.765711][ C0] fib6_rule_lookup+0x38f/0xa10 [ 132.770575][ C0] ? ip6_route_input_lookup+0x1f0/0x1f0 [ 132.776128][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.781316][ C0] ip6_route_input+0xb9d/0xcf0 [ 132.786076][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.791337][ C0] ip6_rcv_finish_core+0x1f9/0x470 [ 132.796437][ C0] ipv6_rcv+0x628/0x710 [ 132.800586][ C0] ? local_bh_enable+0x40/0x40 [ 132.805397][ C0] process_backlog+0xa41/0x1410 [ 132.810289][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 132.815395][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.820578][ C0] ? rps_trigger_softirq+0x2e0/0x2e0 [ 132.825851][ C0] net_rx_action+0x786/0x1aa0 [ 132.830521][ C0] ? net_tx_action+0xc30/0xc30 [ 132.835321][ C0] __do_softirq+0x311/0x83d [ 132.839815][ C0] do_softirq_own_stack+0x49/0x80 [ 132.844924][ C0] [ 132.847848][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 132.853039][ C0] local_bh_enable+0x36/0x40 [ 132.858489][ C0] ip6_finish_output2+0x2113/0x2640 [ 132.863704][ C0] ? kmsan_get_metadata+0x11d/0x180 [ 132.868896][ C0] __ip6_finish_output+0x824/0x8e0 [ 132.874036][ C0] ip6_finish_output+0x166/0x410 [ 132.878967][ C0] ip6_output+0x60a/0x770 [ 132.883748][ C0] ? ip6_output+0x770/0x770 [ 132.888237][ C0] ? ac6_seq_show+0x200/0x200 [ 132.892903][ C0] ndisc_send_skb+0x1047/0x15a0 [ 132.897763][ C0] ? ndisc_error_report+0x1a0/0x1a0 [ 132.902965][ C0] ndisc_send_ns+0xe38/0xe80 [ 132.907582][ C0] ? __queue_delayed_work+0x27f/0x450 [ 132.913002][ C0] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 132.918847][ C0] addrconf_dad_work+0xc0b/0x2aa0 [ 132.923867][ C0] ? kmsan_get_metadata+0x4f/0x180 [ 132.929963][ C0] ? ipv6_get_saddr_eval+0x1350/0x1350 [ 132.935417][ C0] process_one_work+0x1555/0x1f40 [ 132.940447][ C0] worker_thread+0xef6/0x2450 [ 132.945132][ C0] kthread+0x4b5/0x4f0 [ 132.949260][ C0] ? process_one_work+0x1f40/0x1f40 [ 132.954451][ C0] ? kthread_blkcg+0xf0/0xf0 [ 132.959117][ C0] ret_from_fork+0x35/0x40 [ 132.964851][ C0] Kernel Offset: 0x1c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 132.976391][ C0] Rebooting in 86400 seconds..