[ 81.752481][ T27] audit: type=1800 audit(1579862608.789:25): pid=9508 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 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. [ 82.699810][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 82.699823][ T27] audit: type=1800 audit(1579862609.739:29): pid=9508 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 82.726458][ T27] audit: type=1800 audit(1579862609.749:30): pid=9508 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. syzkaller login: [ 90.427464][ T9661] IPVS: ftp: loaded support on port[0] = 21 [ 90.479083][ T9661] chnl_net:caif_netlink_parms(): no params data found [ 90.507678][ T9661] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.515469][ T9661] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.523911][ T9661] device bridge_slave_0 entered promiscuous mode [ 90.532443][ T9661] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.539706][ T9661] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.547785][ T9661] device bridge_slave_1 entered promiscuous mode [ 90.565178][ T9661] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 90.576193][ T9661] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 90.595991][ T9661] team0: Port device team_slave_0 added [ 90.603759][ T9661] team0: Port device team_slave_1 added [ 90.620022][ T9661] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 90.627232][ T9661] 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. [ 90.654142][ T9661] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 90.666480][ T9661] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 90.673611][ T9661] 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. [ 90.699791][ T9661] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 90.775456][ T9661] device hsr_slave_0 entered promiscuous mode [ 90.813152][ T9661] device hsr_slave_1 entered promiscuous mode [ 90.918404][ T9661] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 90.975953][ T9661] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 91.035260][ T9661] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 91.095410][ T9661] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 91.145908][ T9661] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.153130][ T9661] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.160919][ T9661] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.168208][ T9661] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.214759][ T9661] 8021q: adding VLAN 0 to HW filter on device bond0 [ 91.228181][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 91.238871][ T2697] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.246901][ T2697] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.255449][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 91.269363][ T9661] 8021q: adding VLAN 0 to HW filter on device team0 [ 91.281779][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 91.290470][ T3072] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.297562][ T3072] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.309094][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 91.318581][ T2697] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.325720][ T2697] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.345502][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 91.354704][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 91.374994][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 91.384786][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 91.393662][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 91.406395][ T9661] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 91.425119][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 91.432961][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 91.448944][ T9661] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 91.468293][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.488403][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 91.498112][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.509254][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.517449][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.526976][ T9661] device veth0_vlan entered promiscuous mode [ 91.538903][ T9661] device veth1_vlan entered promiscuous mode [ 91.562072][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 91.571097][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 91.579503][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 91.588631][ T2697] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 91.600201][ T9661] device veth0_macvtap entered promiscuous mode [ 91.611650][ T9661] device veth1_macvtap entered promiscuous mode [ 91.629705][ T9661] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 91.637715][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 91.646155][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 91.654635][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 91.663561][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready executing program [ 91.676336][ T9661] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 91.684226][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 91.694245][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 91.845138][ C0] BUG: unable to handle page fault for address: ffff8880bfffd000 [ 91.853052][ C0] #PF: supervisor read access in kernel mode [ 91.859146][ C0] #PF: error_code(0x0000) - not-present page [ 91.865250][ C0] PGD c401067 P4D c401067 PUD 21ffff067 PMD 21fffe067 PTE 0 [ 91.872551][ C0] Oops: 0000 [#1] PREEMPT SMP KASAN [ 91.877741][ C0] CPU: 0 PID: 9661 Comm: syz-executor346 Not tainted 5.5.0-rc6-syzkaller #0 [ 91.886395][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.896594][ C0] RIP: 0010:do_csum+0x19f/0x420 [ 91.901514][ C0] Code: 67 0f 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 b5 10 a4 f9 49 83 c6 40 45 85 ff 75 c0 8b [ 91.921114][ C0] RSP: 0018:ffffc90000007650 EFLAGS: 00010282 [ 91.927171][ C0] RAX: 0000000000000000 RBX: 8c8d010561874e32 RCX: ffffffff87d0e5eb [ 91.935125][ C0] RDX: 0000000000000100 RSI: 000000000340971f RDI: 0000000000000000 [ 91.943095][ C0] RBP: ffffc90000007688 R08: ffff88808d562100 R09: fffff94000514747 [ 91.951157][ C0] R10: fffff94000514746 R11: ffffea00028a3a37 R12: 00000000ffffff38 [ 91.959123][ C0] R13: ffff8880902598c8 R14: ffff8880bfffcfc8 R15: 000000000340971f [ 91.967197][ C0] FS: 0000000000b2b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 91.976176][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.983034][ C0] CR2: ffff8880bfffd000 CR3: 00000000a01a3000 CR4: 00000000001406f0 [ 91.990996][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.999156][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.007250][ C0] Call Trace: [ 92.010535][ C0] [ 92.013389][ C0] csum_partial+0x21/0x30 [ 92.017710][ C0] __udp_gso_segment+0x7fa/0x1140 [ 92.022733][ C0] udp4_ufo_fragment+0x55f/0x770 [ 92.027663][ C0] ? skb_udp_tunnel_segment+0x1e70/0x1e70 [ 92.033372][ C0] inet_gso_segment+0x53c/0x1170 [ 92.038307][ C0] skb_mac_gso_segment+0x295/0x590 [ 92.043523][ C0] ? inet_listen+0x6a0/0x6a0 [ 92.048092][ C0] ? skb_network_protocol+0x4a0/0x4a0 [ 92.053453][ C0] __skb_gso_segment+0x363/0x730 [ 92.058376][ C0] udp_queue_rcv_skb+0x2b2/0x790 [ 92.063423][ C0] ? ip_mc_sf_allow+0x4e/0x6e0 [ 92.068332][ C0] __udp4_lib_rcv+0x20bc/0x2d20 [ 92.073187][ C0] udp_rcv+0x22/0x30 [ 92.077072][ C0] ip_protocol_deliver_rcu+0x5a/0x880 [ 92.082511][ C0] ? rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0 [ 92.088513][ C0] ip_local_deliver_finish+0x23b/0x380 [ 92.093987][ C0] ip_local_deliver+0x1e9/0x520 [ 92.098874][ C0] ? ip_local_deliver_finish+0x380/0x380 [ 92.104489][ C0] ? ip_protocol_deliver_rcu+0x880/0x880 [ 92.110204][ C0] ? ip_rcv_finish_core.isra.0+0x614/0x1ec0 [ 92.116087][ C0] ? lock_downgrade+0x920/0x920 [ 92.120935][ C0] ip_rcv_finish+0x1db/0x2f0 [ 92.125523][ C0] ip_rcv+0xe8/0x3f0 [ 92.129675][ C0] ? ip_local_deliver+0x520/0x520 [ 92.134737][ C0] ? ip_rcv_finish_core.isra.0+0x1ec0/0x1ec0 [ 92.140830][ C0] ? ip_local_deliver+0x520/0x520 [ 92.145873][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 92.151772][ C0] ? __netif_receive_skb_core+0x30b0/0x30b0 [ 92.157657][ C0] ? lock_acquire+0x190/0x410 [ 92.162327][ C0] ? process_backlog+0x195/0x750 [ 92.167261][ C0] __netif_receive_skb+0x2c/0x1d0 [ 92.172279][ C0] process_backlog+0x206/0x750 [ 92.177101][ C0] ? net_rx_action+0x27b/0x1120 [ 92.183595][ C0] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 92.188871][ C0] net_rx_action+0x508/0x1120 [ 92.193539][ C0] ? napi_busy_loop+0x970/0x970 [ 92.198515][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 92.204053][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 92.210117][ C0] ? trace_hardirqs_on+0x67/0x240 [ 92.215169][ C0] __do_softirq+0x262/0x98c [ 92.219790][ C0] do_softirq_own_stack+0x2a/0x40 [ 92.224831][ C0] [ 92.227823][ C0] do_softirq.part.0+0x11a/0x170 [ 92.232891][ C0] do_softirq+0x18/0x20 [ 92.237047][ C0] netif_rx_ni+0x3ea/0x670 [ 92.241480][ C0] dev_loopback_xmit+0x285/0x750 [ 92.246497][ C0] ? netif_rx_ni+0x670/0x670 [ 92.251081][ C0] ? dst_alloc+0x139/0x200 [ 92.255504][ C0] ip_mc_finish_output+0x16e/0x4a0 [ 92.260630][ C0] ip_mc_output+0x5d8/0xf60 [ 92.265127][ C0] ? __ip_queue_xmit+0x1c10/0x1c10 [ 92.270230][ C0] ? dst_output+0x170/0x170 [ 92.274863][ C0] ? ip_make_skb+0x1b1/0x2c0 [ 92.279448][ C0] ? ip_reply_glue_bits+0xc0/0xc0 [ 92.284462][ C0] ip_local_out+0xbb/0x1b0 [ 92.289130][ C0] ip_send_skb+0x42/0xf0 [ 92.293365][ C0] udp_send_skb.isra.0+0x6d5/0x11b0 [ 92.298558][ C0] ? xfrm_lookup_route+0x5b/0x1e0 [ 92.303763][ C0] udp_sendmsg+0x1e8f/0x2810 [ 92.308346][ C0] ? ip_reply_glue_bits+0xc0/0xc0 [ 92.313359][ C0] ? udp_unicast_rcv_skb.isra.0+0x360/0x360 [ 92.319240][ C0] ? tomoyo_supervisor+0x360/0xef0 [ 92.324450][ C0] ? tomoyo_profile+0x60/0x60 [ 92.329206][ C0] ? snprintf+0xbb/0xf0 [ 92.333351][ C0] ? __lock_acquire+0x8a0/0x4a00 [ 92.338399][ C0] udpv6_sendmsg+0x14c7/0x2b40 [ 92.343184][ C0] ? udpv6_sendmsg+0x14c7/0x2b40 [ 92.348115][ C0] ? tomoyo_check_inet_address+0x453/0x730 [ 92.353938][ C0] ? udp_v6_get_port+0x6b0/0x6b0 [ 92.358864][ C0] ? tomoyo_check_acl+0x229/0x3e0 [ 92.363879][ C0] ? tomoyo_check_inet_address+0xf7/0x730 [ 92.369759][ C0] ? __kasan_check_read+0x11/0x20 [ 92.374809][ C0] ? ___might_sleep+0x163/0x2c0 [ 92.379656][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 92.385901][ C0] ? aa_label_sk_perm+0x91/0xf0 [ 92.390736][ C0] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 92.396416][ C0] ? aa_sk_perm+0x346/0xaf0 [ 92.401139][ C0] ? tomoyo_socket_sendmsg_permission+0x147/0x3cb [ 92.407547][ C0] ? aa_af_perm+0x2a0/0x2a0 [ 92.412319][ C0] ? lock_downgrade+0x920/0x920 [ 92.417213][ C0] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 92.422863][ C0] inet6_sendmsg+0x9e/0xe0 [ 92.427279][ C0] ? inet6_sendmsg+0x9e/0xe0 [ 92.431873][ C0] ? inet6_ioctl+0x1c0/0x1c0 [ 92.436454][ C0] sock_sendmsg+0xd7/0x130 [ 92.441476][ C0] __sys_sendto+0x262/0x380 [ 92.446020][ C0] ? __ia32_sys_getpeername+0xb0/0xb0 [ 92.451501][ C0] ? inet_dgram_connect+0x152/0x2d0 [ 92.456700][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.462929][ C0] ? __sys_connect+0x11d/0x1b0 [ 92.467690][ C0] ? fd_install+0x4d/0x60 [ 92.472068][ C0] ? __sys_socket+0x180/0x220 [ 92.478576][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 92.484166][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 92.489695][ C0] ? do_syscall_64+0x26/0x790 [ 92.494371][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.500417][ C0] __x64_sys_sendto+0xe1/0x1a0 [ 92.505449][ C0] do_syscall_64+0xfa/0x790 [ 92.509939][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.515903][ C0] RIP: 0033:0x4426a9 [ 92.519784][ 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 [ 92.539674][ C0] RSP: 002b:00007ffec127f3d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 92.548327][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004426a9 [ 92.556339][ C0] RDX: 0000000000000401 RSI: 0000000020000600 RDI: 0000000000000003 [ 92.564301][ C0] RBP: 00007ffec127f400 R08: 00000000200011c0 R09: 000000000000001c [ 92.572361][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 92.580327][ C0] R13: 0000000000403c40 R14: 0000000000000000 R15: 0000000000000000 [ 92.588295][ C0] Modules linked in: [ 92.592188][ C0] CR2: ffff8880bfffd000 [ 92.596338][ C0] ---[ end trace 36abb05339e2fc9f ]--- [ 92.601910][ C0] RIP: 0010:do_csum+0x19f/0x420 [ 92.606841][ C0] Code: 67 0f 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 b5 10 a4 f9 49 83 c6 40 45 85 ff 75 c0 8b [ 92.626487][ C0] RSP: 0018:ffffc90000007650 EFLAGS: 00010282 [ 92.632720][ C0] RAX: 0000000000000000 RBX: 8c8d010561874e32 RCX: ffffffff87d0e5eb [ 92.640695][ C0] RDX: 0000000000000100 RSI: 000000000340971f RDI: 0000000000000000 [ 92.648837][ C0] RBP: ffffc90000007688 R08: ffff88808d562100 R09: fffff94000514747 [ 92.656846][ C0] R10: fffff94000514746 R11: ffffea00028a3a37 R12: 00000000ffffff38 [ 92.664808][ C0] R13: ffff8880902598c8 R14: ffff8880bfffcfc8 R15: 000000000340971f [ 92.672842][ C0] FS: 0000000000b2b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 92.682045][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.688620][ C0] CR2: ffff8880bfffd000 CR3: 00000000a01a3000 CR4: 00000000001406f0 [ 92.696597][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.704806][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.712762][ C0] Kernel panic - not syncing: Fatal exception in interrupt [ 92.721622][ C0] Kernel Offset: disabled [ 92.725971][ C0] Rebooting in 86400 seconds..