[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 73.981308][ T27] audit: type=1800 audit(1579865166.351:25): pid=9631 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 74.001576][ T27] audit: type=1800 audit(1579865166.351:26): pid=9631 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 74.023053][ T27] audit: type=1800 audit(1579865166.351:27): pid=9631 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.0.68' (ECDSA) to the list of known hosts. syzkaller login: [ 95.465839][ T9785] IPVS: ftp: loaded support on port[0] = 21 [ 95.515781][ T9785] chnl_net:caif_netlink_parms(): no params data found [ 95.542933][ T9785] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.551132][ T9785] bridge0: port 1(bridge_slave_0) entered disabled state [ 95.559132][ T9785] device bridge_slave_0 entered promiscuous mode [ 95.567648][ T9785] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.575386][ T9785] bridge0: port 2(bridge_slave_1) entered disabled state [ 95.583089][ T9785] device bridge_slave_1 entered promiscuous mode [ 95.600787][ T9785] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 95.611647][ T9785] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 95.630910][ T9785] team0: Port device team_slave_0 added [ 95.638250][ T9785] team0: Port device team_slave_1 added [ 95.652605][ T9785] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 95.660062][ T9785] 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. [ 95.687686][ T9785] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 95.700018][ T9785] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 95.707856][ T9785] 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. [ 95.734657][ T9785] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 95.785664][ T9785] device hsr_slave_0 entered promiscuous mode [ 95.823918][ T9785] device hsr_slave_1 entered promiscuous mode [ 95.945741][ T9785] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 95.986541][ T9785] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 96.037128][ T9785] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 96.106017][ T9785] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 96.166012][ T9785] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.174794][ T9785] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.186442][ T9785] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.193723][ T9785] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.237574][ T9785] 8021q: adding VLAN 0 to HW filter on device bond0 [ 96.251072][ T2870] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 96.262816][ T2870] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.271609][ T2870] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.280238][ T2870] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 96.292999][ T9785] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.305307][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 96.315978][ T2835] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.326854][ T2835] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.344496][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 96.353239][ T2852] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.360833][ T2852] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.383463][ T9785] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 96.395861][ T9785] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 96.408738][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 96.417591][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 96.426271][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 96.435635][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 96.445146][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 96.453047][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 96.471819][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 96.480506][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 96.496195][ T9785] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 96.515665][ T2835] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 96.534510][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 96.542841][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 96.552852][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 96.561695][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 96.573839][ T9785] device veth0_vlan entered promiscuous mode [ 96.586573][ T9785] device veth1_vlan entered promiscuous mode [ 96.608130][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 96.616794][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 96.625487][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 96.634172][ T2852] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 96.644751][ T9785] device veth0_macvtap entered promiscuous mode [ 96.656869][ T9785] device veth1_macvtap entered promiscuous mode [ 96.673006][ T9785] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 96.681719][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 96.691285][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 96.699703][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready executing program [ 96.708715][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 96.722352][ T9785] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 96.730146][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 96.739299][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 96.858926][ C1] BUG: unable to handle page fault for address: ffff8880bfffd000 [ 96.866710][ C1] #PF: supervisor read access in kernel mode [ 96.872685][ C1] #PF: error_code(0x0000) - not-present page [ 96.878684][ C1] PGD c401067 P4D c401067 PUD 21ffff067 PMD 21fffe067 PTE 0 [ 96.886082][ C1] Oops: 0000 [#1] PREEMPT SMP KASAN [ 96.891882][ C1] CPU: 1 PID: 9785 Comm: syz-executor862 Not tainted 5.5.0-rc7-syzkaller #0 [ 96.900534][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.910891][ C1] RIP: 0010:do_csum+0x19f/0x420 [ 96.915738][ C1] Code: 47 2c 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 2d a4 f9 49 83 c6 40 45 85 ff 75 c0 8b [ 96.935328][ C1] RSP: 0018:ffffc90000da8650 EFLAGS: 00010282 [ 96.941418][ C1] RAX: 0000000000000000 RBX: ca59caa903fb867a RCX: ffffffff87d0cb4b [ 96.950329][ C1] RDX: 0000000000000100 RSI: 0000000003553edf RDI: 0000000000000000 [ 96.958353][ C1] RBP: ffffc90000da8688 R08: ffff8880980bc2c0 R09: fffff940004f6787 [ 96.966314][ C1] R10: fffff940004f6786 R11: ffffea00027b3c37 R12: 00000000ffffff38 [ 96.974411][ C1] R13: ffff8880954f88c8 R14: ffff8880bfffcfc8 R15: 0000000003553edf [ 96.983853][ C1] FS: 0000000002684880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 96.992790][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 96.999360][ C1] CR2: ffff8880bfffd000 CR3: 000000009f872000 CR4: 00000000001406e0 [ 97.007431][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.015476][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.023428][ C1] Call Trace: [ 97.026697][ C1] [ 97.029615][ C1] csum_partial+0x21/0x30 [ 97.033931][ C1] __udp_gso_segment+0x7fa/0x1140 [ 97.038949][ C1] udp4_ufo_fragment+0x55f/0x770 [ 97.043910][ C1] ? skb_udp_tunnel_segment+0x1e70/0x1e70 [ 97.049661][ C1] inet_gso_segment+0x53c/0x1170 [ 97.054595][ C1] skb_mac_gso_segment+0x295/0x590 [ 97.059692][ C1] ? inet_listen+0x6a0/0x6a0 [ 97.064269][ C1] ? skb_network_protocol+0x4a0/0x4a0 [ 97.069629][ C1] __skb_gso_segment+0x363/0x730 [ 97.074748][ C1] udp_queue_rcv_skb+0x2b2/0x790 [ 97.079665][ C1] ? ip_mc_sf_allow+0x4e/0x6e0 [ 97.084470][ C1] __udp4_lib_rcv+0x20bc/0x2d20 [ 97.089306][ C1] udp_rcv+0x22/0x30 [ 97.093232][ C1] ip_protocol_deliver_rcu+0x5a/0x880 [ 97.098599][ C1] ? rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0 [ 97.104503][ C1] ip_local_deliver_finish+0x23b/0x380 [ 97.110072][ C1] ip_local_deliver+0x1e9/0x520 [ 97.114916][ C1] ? ip_local_deliver_finish+0x380/0x380 [ 97.120633][ C1] ? ip_protocol_deliver_rcu+0x880/0x880 [ 97.126363][ C1] ? ip_rcv_finish_core.isra.0+0x614/0x1ec0 [ 97.133139][ C1] ? lock_downgrade+0x920/0x920 [ 97.137974][ C1] ip_rcv_finish+0x1db/0x2f0 [ 97.143510][ C1] ip_rcv+0xe8/0x3f0 [ 97.147552][ C1] ? ip_local_deliver+0x520/0x520 [ 97.152579][ C1] ? ip_rcv_finish_core.isra.0+0x1ec0/0x1ec0 [ 97.158756][ C1] ? ip_local_deliver+0x520/0x520 [ 97.163784][ C1] __netif_receive_skb_one_core+0x113/0x1a0 [ 97.169668][ C1] ? __netif_receive_skb_core+0x30b0/0x30b0 [ 97.175582][ C1] ? lock_acquire+0x190/0x410 [ 97.180330][ C1] ? process_backlog+0x195/0x750 [ 97.186322][ C1] __netif_receive_skb+0x2c/0x1d0 [ 97.191326][ C1] process_backlog+0x206/0x750 [ 97.196080][ C1] ? net_rx_action+0x27b/0x1120 [ 97.200969][ C1] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 97.206245][ C1] net_rx_action+0x508/0x1120 [ 97.210978][ C1] ? napi_busy_loop+0x970/0x970 [ 97.215822][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 97.221356][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 97.227714][ C1] ? trace_hardirqs_on+0x67/0x240 [ 97.232865][ C1] __do_softirq+0x262/0x98c [ 97.237362][ C1] do_softirq_own_stack+0x2a/0x40 [ 97.242392][ C1] [ 97.245322][ C1] do_softirq.part.0+0x11a/0x170 [ 97.250278][ C1] do_softirq+0x18/0x20 [ 97.254422][ C1] netif_rx_ni+0x3ea/0x670 [ 97.259107][ C1] dev_loopback_xmit+0x285/0x750 [ 97.264037][ C1] ? netif_rx_ni+0x670/0x670 [ 97.268742][ C1] ? dst_alloc+0x139/0x200 [ 97.273157][ C1] ip_mc_finish_output+0x16e/0x4a0 [ 97.278522][ C1] ip_mc_output+0x5d8/0xf60 [ 97.283456][ C1] ? __ip_queue_xmit+0x1c10/0x1c10 [ 97.288813][ C1] ? dst_output+0x170/0x170 [ 97.293296][ C1] ? ip_make_skb+0x1b1/0x2c0 [ 97.297877][ C1] ? ip_reply_glue_bits+0xc0/0xc0 [ 97.302936][ C1] ip_local_out+0xbb/0x1b0 [ 97.307467][ C1] ip_send_skb+0x42/0xf0 [ 97.311801][ C1] udp_send_skb.isra.0+0x6d5/0x11b0 [ 97.319101][ C1] ? xfrm_lookup_route+0x5b/0x1e0 [ 97.324254][ C1] udp_sendmsg+0x1e8f/0x2810 [ 97.328840][ C1] ? ip_reply_glue_bits+0xc0/0xc0 [ 97.333867][ C1] ? udp_unicast_rcv_skb.isra.0+0x360/0x360 [ 97.339794][ C1] ? tomoyo_supervisor+0x360/0xef0 [ 97.344890][ C1] ? tomoyo_profile+0x60/0x60 [ 97.349563][ C1] ? snprintf+0xbb/0xf0 [ 97.353708][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 97.358635][ C1] udpv6_sendmsg+0x14c7/0x2b40 [ 97.363396][ C1] ? udpv6_sendmsg+0x14c7/0x2b40 [ 97.368321][ C1] ? tomoyo_check_inet_address+0x453/0x730 [ 97.374250][ C1] ? udp_v6_get_port+0x6b0/0x6b0 [ 97.379237][ C1] ? tomoyo_check_acl+0x229/0x3e0 [ 97.384253][ C1] ? tomoyo_check_inet_address+0xf7/0x730 [ 97.390061][ C1] ? __kasan_check_read+0x11/0x20 [ 97.396177][ C1] ? ___might_sleep+0x163/0x2c0 [ 97.401072][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 97.407295][ C1] ? aa_label_sk_perm+0x91/0xf0 [ 97.412136][ C1] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 97.417760][ C1] ? aa_sk_perm+0x346/0xaf0 [ 97.422254][ C1] ? tomoyo_socket_sendmsg_permission+0x147/0x3cb [ 97.428820][ C1] ? aa_af_perm+0x2a0/0x2a0 [ 97.433412][ C1] ? lock_downgrade+0x920/0x920 [ 97.438459][ C1] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 97.444170][ C1] inet6_sendmsg+0x9e/0xe0 [ 97.448574][ C1] ? inet6_sendmsg+0x9e/0xe0 [ 97.453327][ C1] ? inet6_ioctl+0x1c0/0x1c0 [ 97.458003][ C1] sock_sendmsg+0xd7/0x130 [ 97.462400][ C1] __sys_sendto+0x262/0x380 [ 97.466900][ C1] ? __ia32_sys_getpeername+0xb0/0xb0 [ 97.472440][ C1] ? inet_dgram_connect+0x152/0x2d0 [ 97.477676][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.484020][ C1] ? __sys_connect+0x11d/0x1b0 [ 97.489389][ C1] ? fd_install+0x4d/0x60 [ 97.493700][ C1] ? __sys_socket+0x180/0x220 [ 97.498530][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 97.503971][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 97.509435][ C1] ? do_syscall_64+0x26/0x790 [ 97.514109][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.520171][ C1] __x64_sys_sendto+0xe1/0x1a0 [ 97.524928][ C1] do_syscall_64+0xfa/0x790 [ 97.529418][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.535606][ C1] RIP: 0033:0x4426a9 [ 97.539520][ C1] 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 [ 97.560096][ C1] RSP: 002b:00007ffe0f11cb78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 97.570609][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004426a9 [ 97.578588][ C1] RDX: 0000000000000401 RSI: 0000000020000600 RDI: 0000000000000003 [ 97.586562][ C1] RBP: 00007ffe0f11cba0 R08: 00000000200011c0 R09: 000000000000001c [ 97.594524][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 97.602637][ C1] R13: 0000000000403c40 R14: 0000000000000000 R15: 0000000000000000 [ 97.610880][ C1] Modules linked in: [ 97.614763][ C1] CR2: ffff8880bfffd000 [ 97.618905][ C1] ---[ end trace 16e642ac43b85385 ]--- [ 97.624402][ C1] RIP: 0010:do_csum+0x19f/0x420 [ 97.629288][ C1] Code: 47 2c 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 2d a4 f9 49 83 c6 40 45 85 ff 75 c0 8b [ 97.649113][ C1] RSP: 0018:ffffc90000da8650 EFLAGS: 00010282 [ 97.655169][ C1] RAX: 0000000000000000 RBX: ca59caa903fb867a RCX: ffffffff87d0cb4b [ 97.663125][ C1] RDX: 0000000000000100 RSI: 0000000003553edf RDI: 0000000000000000 [ 97.671091][ C1] RBP: ffffc90000da8688 R08: ffff8880980bc2c0 R09: fffff940004f6787 [ 97.679184][ C1] R10: fffff940004f6786 R11: ffffea00027b3c37 R12: 00000000ffffff38 [ 97.687868][ C1] R13: ffff8880954f88c8 R14: ffff8880bfffcfc8 R15: 0000000003553edf [ 97.695887][ C1] FS: 0000000002684880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 97.704810][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.711386][ C1] CR2: ffff8880bfffd000 CR3: 000000009f872000 CR4: 00000000001406e0 [ 97.719367][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.727328][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.735338][ C1] Kernel panic - not syncing: Fatal exception in interrupt [ 97.743993][ C1] Kernel Offset: disabled [ 97.748325][ C1] Rebooting in 86400 seconds..