[ 124.769819][ T33] audit: type=1400 audit(1582344164.816:37): avc: denied { watch } for pid=11466 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16180 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1
[ 124.827759][ T33] audit: type=1400 audit(1582344164.856:38): avc: denied { watch } for pid=11466 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 125.180430][ T33] audit: type=1800 audit(1582344165.226:39): pid=11372 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
[ 125.209595][ T33] audit: type=1800 audit(1582344165.256:40): pid=11372 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
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 128.634337][ T33] audit: type=1400 audit(1582344168.686:41): avc: denied { map } for pid=11546 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
Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts.
[ 137.237178][ T33] audit: type=1400 audit(1582344177.286:42): avc: denied { map } for pid=11558 comm="syz-executor358" path="/root/syz-executor358227980" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[ 137.288256][T11559] IPVS: ftp: loaded support on port[0] = 21
[ 137.385483][T11559] chnl_net:caif_netlink_parms(): no params data found
[ 137.470200][T11559] bridge0: port 1(bridge_slave_0) entered blocking state
[ 137.477443][T11559] bridge0: port 1(bridge_slave_0) entered disabled state
[ 137.486349][T11559] device bridge_slave_0 entered promiscuous mode
[ 137.497092][T11559] bridge0: port 2(bridge_slave_1) entered blocking state
[ 137.504653][T11559] bridge0: port 2(bridge_slave_1) entered disabled state
[ 137.514034][T11559] device bridge_slave_1 entered promiscuous mode
[ 137.544326][T11559] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 137.558589][T11559] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 137.588606][T11559] team0: Port device team_slave_0 added
[ 137.599180][T11559] team0: Port device team_slave_1 added
[ 137.625476][T11559] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 137.632689][T11559] 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.
[ 137.658839][T11559] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 137.673622][T11559] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 137.680633][T11559] 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.
[ 137.706846][T11559] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 137.775642][T11559] device hsr_slave_0 entered promiscuous mode
[ 137.823086][T11559] device hsr_slave_1 entered promiscuous mode
[ 138.021577][ T33] audit: type=1400 audit(1582344178.066:43): avc: denied { create } for pid=11559 comm="syz-executor358" 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
[ 138.048263][ T33] audit: type=1400 audit(1582344178.096:44): avc: denied { write } for pid=11559 comm="syz-executor358" 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
[ 138.053228][T11559] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 138.073337][ T33] audit: type=1400 audit(1582344178.096:45): avc: denied { read } for pid=11559 comm="syz-executor358" 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
[ 138.117918][T11559] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 138.187556][T11559] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 138.247177][T11559] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 138.342844][T11559] bridge0: port 2(bridge_slave_1) entered blocking state
[ 138.350139][T11559] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 138.358135][T11559] bridge0: port 1(bridge_slave_0) entered blocking state
[ 138.365451][T11559] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 138.427370][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 138.437101][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 138.490574][T11559] 8021q: adding VLAN 0 to HW filter on device bond0
[ 138.514371][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 138.523799][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 138.540637][T11559] 8021q: adding VLAN 0 to HW filter on device team0
[ 138.557992][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[ 138.567963][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 138.577419][ T5] bridge0: port 1(bridge_slave_0) entered blocking state
[ 138.584726][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 138.601051][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[ 138.611274][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 138.620702][ T31] bridge0: port 2(bridge_slave_1) entered blocking state
[ 138.628012][ T31] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 138.646348][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready
[ 138.673535][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready
[ 138.684138][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready
[ 138.694082][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 138.707427][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 138.721799][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready
[ 138.731429][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 138.754703][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
[ 138.764522][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 138.778597][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
[ 138.788853][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 138.806305][T11559] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 138.841440][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 138.849951][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 138.875176][T11559] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 138.915519][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
[ 138.926720][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 138.962291][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
[ 138.971391][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 138.983523][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 138.994447][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 139.007917][T11559] device veth0_vlan entered promiscuous mode
[ 139.029363][T11559] device veth1_vlan entered promiscuous mode
[ 139.076067][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 139.085056][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 139.094504][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[ 139.105144][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 139.120755][T11559] device veth0_macvtap entered promiscuous mode
[ 139.137234][T11559] device veth1_macvtap entered promiscuous mode
[ 139.174960][T11559] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 139.183745][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 139.193273][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
[ 139.202750][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 139.212271][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 139.231408][T11559] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 139.240597][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 139.250479][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
executing program
[ 139.532413][ C1] =====================================================
[ 139.539406][ C1] BUG: KMSAN: use-after-free in find_match+0x317/0x1480
[ 139.546361][ C1] CPU: 1 PID: 2766 Comm: kworker/1:2 Not tainted 5.6.0-rc2-syzkaller #0
[ 139.554778][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 139.564838][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 139.570816][ C1] Call Trace:
[ 139.574091][ C1] <IRQ>
[ 139.576935][ C1] dump_stack+0x1c9/0x220
[ 139.581252][ C1] kmsan_report+0xf7/0x1e0
[ 139.585668][ C1] __msan_warning+0x58/0xa0
[ 139.590168][ C1] find_match+0x317/0x1480
[ 139.594572][ C1] ? kernel_text_address+0x281/0x320
[ 139.600311][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 139.605508][ C1] __find_rr_leaf+0x3f9/0x1160
[ 139.610278][ C1] ? kmsan_get_metadata+0x4f/0x180
[ 139.615418][ C1] fib6_table_lookup+0x586/0x1420
[ 139.620546][ C1] ip6_pol_route+0x203/0x2960
[ 139.625238][ C1] ip6_pol_route_input+0x123/0x140
[ 139.630343][ C1] fib6_rule_lookup+0x38f/0xa10
[ 139.635185][ C1] ? ip6_route_input_lookup+0x1f0/0x1f0
[ 139.640735][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 139.645951][ C1] ip6_route_input+0xb9d/0xcf0
[ 139.650710][ C1] ? ipvlan_l3_rcv+0x660/0xb70
[ 139.655582][ C1] ip6_rcv_finish_core+0x1f9/0x470
[ 139.660798][ C1] ? ipvlan_ns_exit+0x160/0x160
[ 139.665798][ C1] ipv6_rcv+0x628/0x710
[ 139.669960][ C1] ? local_bh_enable+0x40/0x40
[ 139.674850][ C1] process_backlog+0xa41/0x1410
[ 139.679742][ C1] ? kmsan_get_metadata+0x4f/0x180
[ 139.684863][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 139.690179][ C1] ? rps_trigger_softirq+0x2e0/0x2e0
[ 139.695459][ C1] net_rx_action+0x786/0x1aa0
[ 139.700138][ C1] ? net_tx_action+0xc30/0xc30
[ 139.704895][ C1] __do_softirq+0x311/0x83d
[ 139.709404][ C1] do_softirq_own_stack+0x49/0x80
[ 139.714418][ C1] </IRQ>
[ 139.717350][ C1] __local_bh_enable_ip+0x184/0x1d0
[ 139.722535][ C1] local_bh_enable+0x36/0x40
[ 139.727109][ C1] ip6_finish_output2+0x2113/0x2640
[ 139.732319][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 139.737514][ C1] __ip6_finish_output+0x824/0x8e0
[ 139.742877][ C1] ip6_finish_output+0x166/0x410
[ 139.747906][ C1] ip6_output+0x60a/0x770
[ 139.752328][ C1] ? ip6_output+0x770/0x770
[ 139.757001][ C1] ? ac6_seq_show+0x200/0x200
[ 139.761947][ C1] ndisc_send_skb+0x1047/0x15a0
[ 139.767220][ C1] ? ndisc_error_report+0x1a0/0x1a0
[ 139.772609][ C1] ndisc_send_ns+0xe38/0xe80
[ 139.777265][ C1] ? __queue_delayed_work+0x27f/0x450
[ 139.784257][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0
[ 139.791050][ C1] addrconf_dad_work+0xc0b/0x2aa0
[ 139.798139][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 139.803872][ C1] ? ipv6_get_saddr_eval+0x1350/0x1350
[ 139.810666][ C1] process_one_work+0x1555/0x1f40
[ 139.816508][ C1] worker_thread+0xef6/0x2450
[ 139.821245][ C1] kthread+0x4b5/0x4f0
[ 139.825358][ C1] ? process_one_work+0x1f40/0x1f40
[ 139.830758][ C1] ? kthread_blkcg+0xf0/0xf0
[ 139.835501][ C1] ret_from_fork+0x35/0x40
[ 139.840150][ C1]
[ 139.842565][ C1] Uninit was created at:
[ 139.849202][ C1] kmsan_internal_poison_shadow+0x66/0xd0
[ 139.855001][ C1] kmsan_slab_free+0x6e/0xb0
[ 139.859856][ C1] kfree+0x565/0x30a0
[ 139.864061][ C1] netdev_name_node_alt_destroy+0x587/0x690
[ 139.870188][ C1] rtnl_linkprop+0x939/0xc00
[ 139.877033][ C1] rtnl_dellinkprop+0x9d/0xb0
[ 139.881981][ C1] rtnetlink_rcv_msg+0x1153/0x1570
[ 139.887287][ C1] netlink_rcv_skb+0x451/0x650
[ 139.892543][ C1] rtnetlink_rcv+0x50/0x60
[ 139.897534][ C1] netlink_unicast+0xf9e/0x1100
[ 139.902835][ C1] netlink_sendmsg+0x1246/0x14d0
[ 139.908682][ C1] ____sys_sendmsg+0x12b6/0x1350
[ 139.914592][ C1] __sys_sendmsg+0x451/0x5f0
[ 139.919945][ C1] __ia32_compat_sys_sendmsg+0xed/0x130
[ 139.925635][ C1] do_fast_syscall_32+0x3c7/0x6e0
[ 139.930775][ C1] entry_SYSENTER_compat+0x68/0x77
[ 139.937559][ C1] =====================================================
[ 139.945702][ C1] Disabling lock debugging due to kernel taint
[ 139.951847][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 139.959237][ C1] CPU: 1 PID: 2766 Comm: kworker/1:2 Tainted: G B 5.6.0-rc2-syzkaller #0
[ 139.973822][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 139.988126][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 139.994633][ C1] Call Trace:
[ 139.997994][ C1] <IRQ>
[ 140.000834][ C1] dump_stack+0x1c9/0x220
[ 140.005639][ C1] panic+0x3d5/0xc3e
[ 140.009553][ C1] kmsan_report+0x1df/0x1e0
[ 140.014435][ C1] __msan_warning+0x58/0xa0
[ 140.018935][ C1] find_match+0x317/0x1480
[ 140.023380][ C1] ? kernel_text_address+0x281/0x320
[ 140.030685][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 140.037043][ C1] __find_rr_leaf+0x3f9/0x1160
[ 140.042824][ C1] ? kmsan_get_metadata+0x4f/0x180
[ 140.048106][ C1] fib6_table_lookup+0x586/0x1420
[ 140.053761][ C1] ip6_pol_route+0x203/0x2960
[ 140.058462][ C1] ip6_pol_route_input+0x123/0x140
[ 140.063930][ C1] fib6_rule_lookup+0x38f/0xa10
[ 140.069603][ C1] ? ip6_route_input_lookup+0x1f0/0x1f0
[ 140.075404][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 140.081122][ C1] ip6_route_input+0xb9d/0xcf0
[ 140.087716][ C1] ? ipvlan_l3_rcv+0x660/0xb70
[ 140.104104][ C1] ip6_rcv_finish_core+0x1f9/0x470
[ 140.111535][ C1] ? ipvlan_ns_exit+0x160/0x160
[ 140.116729][ C1] ipv6_rcv+0x628/0x710
[ 140.121573][ C1] ? local_bh_enable+0x40/0x40
[ 140.128700][ C1] process_backlog+0xa41/0x1410
[ 140.133681][ C1] ? kmsan_get_metadata+0x4f/0x180
[ 140.138803][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 140.144005][ C1] ? rps_trigger_softirq+0x2e0/0x2e0
[ 140.150311][ C1] net_rx_action+0x786/0x1aa0
[ 140.155089][ C1] ? net_tx_action+0xc30/0xc30
[ 140.159948][ C1] __do_softirq+0x311/0x83d
[ 140.164452][ C1] do_softirq_own_stack+0x49/0x80
[ 140.170109][ C1] </IRQ>
[ 140.174418][ C1] __local_bh_enable_ip+0x184/0x1d0
[ 140.180242][ C1] local_bh_enable+0x36/0x40
[ 140.185427][ C1] ip6_finish_output2+0x2113/0x2640
[ 140.191349][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 140.197141][ C1] __ip6_finish_output+0x824/0x8e0
[ 140.202355][ C1] ip6_finish_output+0x166/0x410
[ 140.207470][ C1] ip6_output+0x60a/0x770
[ 140.211896][ C1] ? ip6_output+0x770/0x770
[ 140.216775][ C1] ? ac6_seq_show+0x200/0x200
[ 140.223589][ C1] ndisc_send_skb+0x1047/0x15a0
[ 140.228682][ C1] ? ndisc_error_report+0x1a0/0x1a0
[ 140.233972][ C1] ndisc_send_ns+0xe38/0xe80
[ 140.238795][ C1] ? __queue_delayed_work+0x27f/0x450
[ 140.244545][ C1] ? kmsan_get_shadow_origin_ptr+0x81/0xb0
[ 140.250470][ C1] addrconf_dad_work+0xc0b/0x2aa0
[ 140.256146][ C1] ? kmsan_get_metadata+0x11d/0x180
[ 140.262309][ C1] ? ipv6_get_saddr_eval+0x1350/0x1350
[ 140.268483][ C1] process_one_work+0x1555/0x1f40
[ 140.275474][ C1] worker_thread+0xef6/0x2450
[ 140.280660][ C1] kthread+0x4b5/0x4f0
[ 140.285102][ C1] ? process_one_work+0x1f40/0x1f40
[ 140.291291][ C1] ? kthread_blkcg+0xf0/0xf0
[ 140.296238][ C1] ret_from_fork+0x35/0x40
[ 140.303828][ C1] Kernel Offset: 0x16200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 140.315687][ C1] Rebooting in 86400 seconds..