[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.371559][ T25] audit: type=1800 audit(1582482863.823:25): pid=9616 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 66.391330][ T25] audit: type=1800 audit(1582482863.823:26): pid=9616 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 66.417028][ T25] audit: type=1800 audit(1582482863.823:27): pid=9616 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 '10.128.0.181' (ECDSA) to the list of known hosts. syzkaller login: [ 77.730325][ T9770] IPVS: ftp: loaded support on port[0] = 21 [ 77.784731][ T9770] chnl_net:caif_netlink_parms(): no params data found [ 77.820286][ T9770] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.827885][ T9770] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.836036][ T9770] device bridge_slave_0 entered promiscuous mode [ 77.844657][ T9770] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.851896][ T9770] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.859531][ T9770] device bridge_slave_1 entered promiscuous mode [ 77.875843][ T9770] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.888010][ T9770] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.905553][ T9770] team0: Port device team_slave_0 added [ 77.912897][ T9770] team0: Port device team_slave_1 added [ 77.927601][ T9770] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.934553][ T9770] 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. [ 77.960547][ T9770] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.972643][ T9770] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.979663][ T9770] 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. [ 78.005582][ T9770] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.078539][ T9770] device hsr_slave_0 entered promiscuous mode [ 78.146810][ T9770] device hsr_slave_1 entered promiscuous mode [ 78.286052][ T9770] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.318490][ T9770] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.359000][ T9770] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.398888][ T9770] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.481455][ T9770] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.488713][ T9770] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.496605][ T9770] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.503645][ T9770] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.545678][ T9770] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.559747][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.569070][ T2766] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.588077][ T2766] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.595892][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.609279][ T9770] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.619678][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.628246][ T2684] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.635299][ T2684] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.646009][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.655161][ T2766] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.662233][ T2766] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.687726][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.696485][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.704868][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.713434][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.724584][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.735159][ T9770] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.752112][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.761715][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.774538][ T9770] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.792072][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.801043][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.821902][ T9770] device veth0_vlan entered promiscuous mode [ 78.833897][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.843017][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.852690][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.860719][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.872628][ T9770] device veth1_vlan entered promiscuous mode [ 78.892684][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.901019][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.909370][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.917983][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.928746][ T9770] device veth0_macvtap entered promiscuous mode [ 78.938691][ T9770] device veth1_macvtap entered promiscuous mode [ 78.955694][ T9770] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.963429][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.972133][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.980374][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.990063][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.001652][ T9770] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.009480][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.018314][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 79.238475][ T9776] team0: Device sit1 is of different type [ 79.466664][ T9776] netlink: 8 bytes leftover after parsing attributes in process `syz-executor800'. [ 79.479054][ T9776] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 79.488537][ T9776] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.495960][ T9776] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.504570][ T9776] device bridge_slave_0 left promiscuous mode [ 79.511570][ T9776] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.606808][ T9776] device bridge_slave_1 left promiscuous mode [ 79.613004][ T9776] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.708514][ T9776] bond0: (slave bond_slave_0): Releasing backup interface [ 79.837845][ T9776] bond0: (slave bond_slave_1): Releasing backup interface [ 80.028433][ T9776] team0: Port device team_slave_0 removed [ 80.141301][ T9776] team0: Port device team_slave_1 removed [ 80.197094][ T9776] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.204664][ T9776] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.246910][ T9776] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.254364][ T9776] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.310582][ T9776] netlink: 'syz-executor800': attribute type 10 has an invalid length. [ 80.320523][ T9776] team0: Device ipvlan1 failed to register rx_handler executing program [ 80.450748][ T9777] team0: Port device sit1 added [ 80.465830][ T9777] netlink: 8 bytes leftover after parsing attributes in process `syz-executor800'. [ 80.478757][ T9777] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 80.487871][ T9777] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.495310][ T9777] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.576961][ T9777] team0: Port device sit1 removed [ 80.616498][ T9777] netlink: 'syz-executor800': attribute type 10 has an invalid length. [ 80.636378][ T9777] team0: Device ipvlan1 failed to register rx_handler executing program [ 80.856477][ T9778] netlink: 8 bytes leftover after parsing attributes in process `syz-executor800'. [ 80.868729][ T9778] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 80.878334][ T9778] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.885719][ T9778] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.902991][ T9778] netlink: 'syz-executor800': attribute type 10 has an invalid length. [ 80.913843][ T9778] team0: Device ipvlan1 failed to register rx_handler executing program [ 81.166499][ T9779] netlink: 8 bytes leftover after parsing attributes in process `syz-executor800'. [ 81.179447][ T9779] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 81.187999][ T9779] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.195437][ T9779] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.212166][ T9779] netlink: 'syz-executor800': attribute type 10 has an invalid length. [ 81.222256][ T9779] team0: Device ipvlan1 failed to register rx_handler executing program [ 81.516481][ T2902] general protection fault, probably for non-canonical address 0xdffffc0020000068: 0000 [#1] PREEMPT SMP KASAN [ 81.528236][ T2902] KASAN: probably user-memory-access in range [0x0000000100000340-0x0000000100000347] [ 81.537901][ T2902] CPU: 1 PID: 2902 Comm: kworker/1:4 Not tainted 5.6.0-rc2-syzkaller #0 [ 81.546323][ T2902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.556418][ T2902] Workqueue: ipv6_addrconf addrconf_dad_work [ 81.562444][ T2902] RIP: 0010:ipvlan_hard_header+0x120/0x160 [ 81.568237][ T2902] Code: 5d 41 5e 41 5f 5d c3 45 31 e4 eb e4 e8 b9 86 bc fc 49 8d bc 24 48 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 2f 49 8b 9c 24 48 03 00 00 e9 29 ff ff ff e8 38 2c [ 81.587826][ T2902] RSP: 0018:ffffc90008cc7620 EFLAGS: 00010203 [ 81.593885][ T2902] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88808e32d978 [ 81.601852][ T2902] RDX: 0000000020000068 RSI: ffffffff84b90107 RDI: 0000000100000347 [ 81.609967][ T2902] RBP: ffffc90008cc7658 R08: 0000000000000000 R09: 0000000000000060 [ 81.617931][ T2902] R10: fffffbfff16a356f R11: ffffffff8b51ab7f R12: 00000000ffffffff [ 81.625898][ T2902] R13: ffff8880a35b4400 R14: ffff88808e32d978 R15: 0000000000000060 [ 81.633856][ T2902] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 81.642825][ T2902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.649443][ T2902] CR2: 00000000200000d0 CR3: 000000008d802000 CR4: 00000000001406e0 [ 81.657633][ T2902] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.665757][ T2902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.673828][ T2902] Call Trace: [ 81.677115][ T2902] ? trace_hardirqs_on+0x67/0x240 [ 81.682139][ T2902] ? ipvlan_get_iflink+0x70/0x70 [ 81.687132][ T2902] neigh_resolve_output+0x552/0x990 [ 81.692342][ T2902] ip6_finish_output2+0x109a/0x25c0 [ 81.697586][ T2902] ? ip6_frag_next+0xb20/0xb20 [ 81.702353][ T2902] ? __kasan_check_read+0x11/0x20 [ 81.707371][ T2902] __ip6_finish_output+0x444/0xaa0 [ 81.712685][ T2902] ? __ip6_finish_output+0x444/0xaa0 [ 81.718227][ T2902] ip6_finish_output+0x38/0x1f0 [ 81.723259][ T2902] ip6_output+0x25e/0x880 [ 81.727586][ T2902] ? ip6_finish_output+0x1f0/0x1f0 [ 81.732716][ T2902] ? __local_bh_enable_ip+0x15a/0x270 [ 81.738230][ T2902] ? __ip6_finish_output+0xaa0/0xaa0 [ 81.743691][ T2902] ? xfrm_lookup+0x38/0x50 [ 81.748227][ T2902] mld_sendpack+0x9c2/0xed0 [ 81.752725][ T2902] ? nf_hook.constprop.0+0x560/0x560 [ 81.758256][ T2902] ? mld_send_initial_cr.part.0+0x102/0x160 [ 81.764146][ T2902] ? __local_bh_enable_ip+0x15a/0x270 [ 81.769646][ T2902] mld_send_initial_cr.part.0+0x114/0x160 [ 81.775565][ T2902] ipv6_mc_dad_complete+0x1ab/0x1f0 [ 81.780762][ T2902] addrconf_dad_completed+0x8ce/0xbb0 [ 81.786138][ T2902] ? addrconf_rs_timer+0x6e0/0x6e0 [ 81.791257][ T2902] ? addrconf_dad_work+0x7b6/0x11d0 [ 81.796460][ T2902] ? trace_hardirqs_on+0x67/0x240 [ 81.801489][ T2902] ? addrconf_dad_work+0x7b6/0x11d0 [ 81.806845][ T2902] addrconf_dad_work+0x7cc/0x11d0 [ 81.811954][ T2902] ? addrconf_dad_work+0x7cc/0x11d0 [ 81.817145][ T2902] ? addrconf_dad_completed+0xbb0/0xbb0 [ 81.822677][ T2902] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 81.828268][ T2902] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 81.834238][ T2902] ? trace_hardirqs_on+0x67/0x240 [ 81.839312][ T2902] process_one_work+0xa05/0x17a0 [ 81.844242][ T2902] ? mark_held_locks+0xf0/0xf0 [ 81.848998][ T2902] ? pwq_dec_nr_in_flight+0x320/0x320 [ 81.854364][ T2902] ? lock_acquire+0x190/0x410 [ 81.859033][ T2902] worker_thread+0x98/0xe40 [ 81.863552][ T2902] ? trace_hardirqs_on+0x67/0x240 [ 81.868571][ T2902] kthread+0x361/0x430 [ 81.872624][ T2902] ? process_one_work+0x17a0/0x17a0 [ 81.877807][ T2902] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 81.883510][ T2902] ret_from_fork+0x24/0x30 [ 81.887912][ T2902] Modules linked in: [ 81.891848][ T2902] ---[ end trace a78e57c8d100279f ]--- [ 81.897350][ T2902] RIP: 0010:ipvlan_hard_header+0x120/0x160 [ 81.903147][ T2902] Code: 5d 41 5e 41 5f 5d c3 45 31 e4 eb e4 e8 b9 86 bc fc 49 8d bc 24 48 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 2f 49 8b 9c 24 48 03 00 00 e9 29 ff ff ff e8 38 2c [ 81.922866][ T2902] RSP: 0018:ffffc90008cc7620 EFLAGS: 00010203 [ 81.928950][ T2902] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88808e32d978 [ 81.936963][ T2902] RDX: 0000000020000068 RSI: ffffffff84b90107 RDI: 0000000100000347 [ 81.944934][ T2902] RBP: ffffc90008cc7658 R08: 0000000000000000 R09: 0000000000000060 [ 81.952977][ T2902] R10: fffffbfff16a356f R11: ffffffff8b51ab7f R12: 00000000ffffffff [ 81.960967][ T2902] R13: ffff8880a35b4400 R14: ffff88808e32d978 R15: 0000000000000060 [ 81.968966][ T2902] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 81.978085][ T2902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.984653][ T2902] CR2: 00000000200000d0 CR3: 000000008d802000 CR4: 00000000001406e0 [ 81.992686][ T2902] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.000678][ T2902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.008721][ T2902] Kernel panic - not syncing: Fatal exception in interrupt [ 82.016980][ T2902] Kernel Offset: disabled [ 82.021307][ T2902] Rebooting in 86400 seconds..