[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[ 100.796847][ T28] audit: type=1400 audit(1579989162.824:37): avc: denied { watch } for pid=10381 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 104.453307][ T28] kauditd_printk_skb: 3 callbacks suppressed [ 104.453329][ T28] audit: type=1400 audit(1579989166.484:41): avc: denied { map } for pid=10463 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 '10.128.1.5' (ECDSA) to the list of known hosts. [ 111.229497][ T28] audit: type=1400 audit(1579989173.254:42): avc: denied { map } for pid=10475 comm="syz-executor691" path="/root/syz-executor691867469" 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 [ 111.255364][T10476] IPVS: ftp: loaded support on port[0] = 21 [ 111.315502][T10476] chnl_net:caif_netlink_parms(): no params data found [ 111.348312][T10476] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.356985][T10476] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.365897][T10476] device bridge_slave_0 entered promiscuous mode [ 111.375332][T10476] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.383328][T10476] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.391777][T10476] device bridge_slave_1 entered promiscuous mode [ 111.410997][T10476] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 111.423240][T10476] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 111.445170][T10476] team0: Port device team_slave_0 added [ 111.454111][T10476] team0: Port device team_slave_1 added [ 111.469602][T10476] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 111.477441][T10476] 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. [ 111.505759][T10476] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 111.518872][T10476] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 111.527027][T10476] 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. [ 111.554515][T10476] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 111.613523][T10476] device hsr_slave_0 entered promiscuous mode [ 111.670271][T10476] device hsr_slave_1 entered promiscuous mode [ 111.781710][ T28] audit: type=1400 audit(1579989173.814:43): avc: denied { create } for pid=10476 comm="syz-executor691" 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 [ 111.784582][T10476] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 111.814192][ T28] audit: type=1400 audit(1579989173.814:44): avc: denied { write } for pid=10476 comm="syz-executor691" 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 [ 111.841863][ T28] audit: type=1400 audit(1579989173.814:45): avc: denied { read } for pid=10476 comm="syz-executor691" 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 [ 111.883565][T10476] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 111.932462][T10476] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 112.012206][T10476] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 112.085257][T10476] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.093271][T10476] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.102102][T10476] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.110590][T10476] bridge0: port 1(bridge_slave_0) entered forwarding state [ 112.161904][T10476] 8021q: adding VLAN 0 to HW filter on device bond0 [ 112.176925][ T2808] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 112.189262][ T2808] bridge0: port 1(bridge_slave_0) entered disabled state [ 112.198779][ T2808] bridge0: port 2(bridge_slave_1) entered disabled state [ 112.207492][ T2808] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 112.223886][T10476] 8021q: adding VLAN 0 to HW filter on device team0 [ 112.236075][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 112.246944][ T2705] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.255621][ T2705] bridge0: port 1(bridge_slave_0) entered forwarding state [ 112.271033][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 112.280473][ T2766] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.288085][ T2766] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.312554][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 112.323196][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 112.334757][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 112.346457][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 112.357018][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 112.371993][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 112.381662][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 112.393767][T10476] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 112.414850][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 112.424380][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 112.438760][T10476] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 112.461591][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 112.471749][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 112.493796][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 112.504361][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 112.514472][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 112.522793][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 112.532916][T10476] device veth0_vlan entered promiscuous mode [ 112.546055][T10476] device veth1_vlan entered promiscuous mode [ 112.572417][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 112.581595][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 112.591850][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 112.601236][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 112.615755][T10476] device veth0_macvtap entered promiscuous mode [ 112.626100][T10476] device veth1_macvtap entered promiscuous mode [ 112.645384][T10476] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 112.654353][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 112.664373][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready executing program [ 112.673318][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 112.682618][ T2768] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 112.695593][T10476] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 112.704784][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 112.714092][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 112.848406][ C0] BUG: unable to handle page fault for address: ffff8880bfffd000 [ 112.857405][ C0] #PF: supervisor read access in kernel mode [ 112.864091][ C0] #PF: error_code(0x0000) - not-present page [ 112.870543][ C0] PGD c401067 P4D c401067 PUD 21ffff067 PMD 21fffe067 PTE 0 [ 112.878265][ C0] Oops: 0000 [#1] PREEMPT SMP KASAN [ 112.883728][ C0] CPU: 0 PID: 10476 Comm: syz-executor691 Not tainted 5.5.0-rc7-syzkaller #0 [ 112.892886][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.903957][ C0] RIP: 0010:do_csum+0x19f/0x420 [ 112.909062][ C0] Code: 47 1c a4 f9 41 83 ef 01 31 ff 31 c0 44 89 fe 49 03 1e 49 13 5e 08 49 13 5e 10 49 13 5e 18 49 13 5e 20 49 13 5e 28 49 13 5e 30 <49> 13 5e 38 48 11 c3 e8 95 1d a4 f9 49 83 c6 40 45 85 ff 75 c0 8b [ 112.932138][ C0] RSP: 0018:ffffc90000007650 EFLAGS: 00010286 [ 112.938586][ C0] RAX: 0000000000000000 RBX: d6fa8de1f9b24418 RCX: ffffffff87d0db4b [ 112.947261][ C0] RDX: 0000000000000100 RSI: 000000000343037f RDI: 0000000000000000 [ 112.956253][ C0] RBP: ffffc90000007688 R08: ffff8880a2eaa180 R09: fffff940004ed847 [ 112.964926][ C0] R10: fffff940004ed846 R11: ffffea000276c237 R12: 00000000ffffff38 [ 112.973129][ C0] R13: ffff888090c0b0c8 R14: ffff8880bfffcfc8 R15: 000000000343037f [ 112.981834][ C0] FS: 00000000023e9880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 112.992331][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 112.999473][ C0] CR2: ffff8880bfffd000 CR3: 000000008bd33000 CR4: 00000000001406f0 [ 113.008091][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.016953][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.026847][ C0] Call Trace: [ 113.030536][ C0] [ 113.033623][ C0] csum_partial+0x21/0x30 [ 113.038582][ C0] __udp_gso_segment+0x7fa/0x1140 [ 113.044305][ C0] udp4_ufo_fragment+0x55f/0x770 [ 113.049424][ C0] ? skb_udp_tunnel_segment+0x1e70/0x1e70 [ 113.055938][ C0] inet_gso_segment+0x53c/0x1170 [ 113.061827][ C0] skb_mac_gso_segment+0x295/0x590 [ 113.067633][ C0] ? inet_listen+0x6a0/0x6a0 [ 113.072747][ C0] ? skb_network_protocol+0x4a0/0x4a0 [ 113.078276][ C0] __skb_gso_segment+0x363/0x730 [ 113.083825][ C0] udp_queue_rcv_skb+0x2b2/0x790 [ 113.088895][ C0] ? ip_mc_sf_allow+0x4e/0x6e0 [ 113.094578][ C0] __udp4_lib_rcv+0x20bc/0x2d20 [ 113.099830][ C0] udp_rcv+0x22/0x30 [ 113.104168][ C0] ip_protocol_deliver_rcu+0x5a/0x880 [ 113.110127][ C0] ? rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0 [ 113.116110][ C0] ip_local_deliver_finish+0x23b/0x380 [ 113.121677][ C0] ip_local_deliver+0x1e9/0x520 [ 113.127245][ C0] ? ip_local_deliver_finish+0x380/0x380 [ 113.133970][ C0] ? ip_protocol_deliver_rcu+0x880/0x880 [ 113.140908][ C0] ? ip_rcv_finish_core.isra.0+0x614/0x1ec0 [ 113.147349][ C0] ? lock_downgrade+0x920/0x920 [ 113.153330][ C0] ip_rcv_finish+0x1db/0x2f0 [ 113.158372][ C0] ip_rcv+0xe8/0x3f0 [ 113.162708][ C0] ? ip_local_deliver+0x520/0x520 [ 113.167963][ C0] ? find_held_lock+0x35/0x130 [ 113.172962][ C0] ? ip_rcv_finish_core.isra.0+0x1ec0/0x1ec0 [ 113.179397][ C0] ? ip_local_deliver+0x520/0x520 [ 113.185097][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 113.191645][ C0] ? __netif_receive_skb_core+0x30b0/0x30b0 [ 113.198186][ C0] ? lock_acquire+0x190/0x410 [ 113.202871][ C0] ? process_backlog+0x195/0x750 [ 113.208108][ C0] __netif_receive_skb+0x2c/0x1d0 [ 113.213368][ C0] process_backlog+0x206/0x750 [ 113.218618][ C0] ? net_rx_action+0x27b/0x1120 [ 113.223979][ C0] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 113.229396][ C0] net_rx_action+0x508/0x1120 [ 113.234446][ C0] ? napi_busy_loop+0x970/0x970 [ 113.239671][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 113.245584][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 113.251733][ C0] ? trace_hardirqs_on+0x67/0x240 [ 113.257363][ C0] __do_softirq+0x262/0x98c [ 113.262003][ C0] do_softirq_own_stack+0x2a/0x40 [ 113.267492][ C0] [ 113.270436][ C0] do_softirq.part.0+0x11a/0x170 [ 113.276131][ C0] do_softirq+0x18/0x20 [ 113.280843][ C0] netif_rx_ni+0x3ea/0x670 [ 113.285492][ C0] dev_loopback_xmit+0x285/0x750 [ 113.290583][ C0] ? netif_rx_ni+0x670/0x670 [ 113.295334][ C0] ? dst_alloc+0x139/0x200 [ 113.299998][ C0] ip_mc_finish_output+0x16e/0x4a0 [ 113.305458][ C0] ip_mc_output+0x5d8/0xf60 [ 113.309959][ C0] ? __ip_queue_xmit+0x1c10/0x1c10 [ 113.315431][ C0] ? dst_output+0x170/0x170 [ 113.319943][ C0] ? ip_make_skb+0x1b1/0x2c0 [ 113.324952][ C0] ? ip_reply_glue_bits+0xc0/0xc0 [ 113.330000][ C0] ip_local_out+0xbb/0x1b0 [ 113.334718][ C0] ip_send_skb+0x42/0xf0 [ 113.339325][ C0] udp_send_skb.isra.0+0x6d5/0x11b0 [ 113.344826][ C0] ? xfrm_lookup_route+0x5b/0x1e0 [ 113.350031][ C0] udp_sendmsg+0x1e8f/0x2810 [ 113.354989][ C0] ? ip_reply_glue_bits+0xc0/0xc0 [ 113.360190][ C0] ? udp_unicast_rcv_skb.isra.0+0x360/0x360 [ 113.366376][ C0] ? tomoyo_supervisor+0x360/0xef0 [ 113.371870][ C0] ? tomoyo_profile+0x60/0x60 [ 113.376859][ C0] ? snprintf+0xbb/0xf0 [ 113.381208][ C0] ? __lock_acquire+0x8a0/0x4a00 [ 113.386140][ C0] udpv6_sendmsg+0x14c7/0x2b40 [ 113.390922][ C0] ? udpv6_sendmsg+0x14c7/0x2b40 [ 113.396413][ C0] ? tomoyo_check_inet_address+0x453/0x730 [ 113.402374][ C0] ? udp_v6_get_port+0x6b0/0x6b0 [ 113.407484][ C0] ? tomoyo_check_acl+0x229/0x3e0 [ 113.412649][ C0] ? tomoyo_check_inet_address+0xf7/0x730 [ 113.418847][ C0] ? tomoyo_unix_entry+0x5d0/0x5d0 [ 113.424299][ C0] ? __kasan_check_read+0x11/0x20 [ 113.431369][ C0] ? tomoyo_socket_sendmsg_permission+0x147/0x3cb [ 113.438517][ C0] ? tomoyo_socket_bind_permission+0x360/0x360 [ 113.444852][ C0] ? lock_downgrade+0x920/0x920 [ 113.450146][ C0] inet6_sendmsg+0x9e/0xe0 [ 113.454726][ C0] ? inet6_sendmsg+0x9e/0xe0 [ 113.459684][ C0] ? inet6_ioctl+0x1c0/0x1c0 [ 113.464615][ C0] sock_sendmsg+0xd7/0x130 [ 113.469480][ C0] __sys_sendto+0x262/0x380 [ 113.474580][ C0] ? __ia32_sys_getpeername+0xb0/0xb0 [ 113.480127][ C0] ? inet_dgram_connect+0x152/0x2d0 [ 113.485651][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.492162][ C0] ? __sys_connect+0x11d/0x1b0 [ 113.497305][ C0] ? fd_install+0x4d/0x60 [ 113.502015][ C0] ? __sys_socket+0x180/0x220 [ 113.506865][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 113.512334][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 113.519055][ C0] ? do_syscall_64+0x26/0x790 [ 113.524004][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.530461][ C0] __x64_sys_sendto+0xe1/0x1a0 [ 113.535532][ C0] do_syscall_64+0xfa/0x790 [ 113.540564][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.546915][ C0] RIP: 0033:0x4426a9 [ 113.551192][ C0] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 113.571331][ C0] RSP: 002b:00007fffcefc1d28 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 113.580493][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004426a9 [ 113.589250][ C0] RDX: 0000000000000401 RSI: 0000000020000600 RDI: 0000000000000003 [ 113.597503][ C0] RBP: 00007fffcefc1d50 R08: 00000000200011c0 R09: 000000000000001c [ 113.605477][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 113.613997][ C0] R13: 0000000000403c40 R14: 0000000000000000 R15: 0000000000000000 [ 113.622190][ C0] Modules linked in: [ 113.626555][ C0] CR2: ffff8880bfffd000 [ 113.631374][ C0] ---[ end trace 06a7fe4da75fa840 ]--- [ 113.637265][ C0] RIP: 0010:do_csum+0x19f/0x420 [ 113.643002][ C0] Code: 47 1c a4 f9 41 83 ef 01 31 ff 31 c0 44 89 fe 49 03 1e 49 13 5e 08 49 13 5e 10 49 13 5e 18 49 13 5e 20 49 13 5e 28 49 13 5e 30 <49> 13 5e 38 48 11 c3 e8 95 1d a4 f9 49 83 c6 40 45 85 ff 75 c0 8b [ 113.663413][ C0] RSP: 0018:ffffc90000007650 EFLAGS: 00010286 [ 113.669964][ C0] RAX: 0000000000000000 RBX: d6fa8de1f9b24418 RCX: ffffffff87d0db4b [ 113.678304][ C0] RDX: 0000000000000100 RSI: 000000000343037f RDI: 0000000000000000 [ 113.686598][ C0] RBP: ffffc90000007688 R08: ffff8880a2eaa180 R09: fffff940004ed847 [ 113.695221][ C0] R10: fffff940004ed846 R11: ffffea000276c237 R12: 00000000ffffff38 [ 113.703563][ C0] R13: ffff888090c0b0c8 R14: ffff8880bfffcfc8 R15: 000000000343037f [ 113.712109][ C0] FS: 00000000023e9880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 113.721318][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.728768][ C0] CR2: ffff8880bfffd000 CR3: 000000008bd33000 CR4: 00000000001406f0 [ 113.737577][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.746064][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.755077][ C0] Kernel panic - not syncing: Fatal exception in interrupt [ 113.765584][ C0] Kernel Offset: disabled [ 113.770404][ C0] Rebooting in 86400 seconds..