[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.666586][ T26] audit: type=1800 audit(1571698098.984:25): pid=8587 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.708631][ T26] audit: type=1800 audit(1571698098.984:26): pid=8587 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.753213][ T26] audit: type=1800 audit(1571698098.984:27): pid=8587 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 '10.128.0.178' (ECDSA) to the list of known hosts. syzkaller login: [ 67.274906][ T8744] IPVS: ftp: loaded support on port[0] = 21 [ 67.337215][ T8744] chnl_net:caif_netlink_parms(): no params data found [ 67.365528][ T8744] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.373726][ T8744] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.382763][ T8744] device bridge_slave_0 entered promiscuous mode [ 67.391233][ T8744] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.398361][ T8744] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.407279][ T8744] device bridge_slave_1 entered promiscuous mode [ 67.424713][ T8744] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.435234][ T8744] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.454587][ T8744] team0: Port device team_slave_0 added [ 67.461503][ T8744] team0: Port device team_slave_1 added [ 67.541276][ T8744] device hsr_slave_0 entered promiscuous mode [ 67.609990][ T8744] device hsr_slave_1 entered promiscuous mode [ 67.677098][ T8744] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.684400][ T8744] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.692279][ T8744] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.699396][ T8744] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.731544][ T8744] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.744873][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.765579][ T2827] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.774165][ T2827] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.783107][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.794753][ T8744] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.804889][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.814087][ T2999] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.821198][ T2999] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.832720][ T8746] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.841089][ T8746] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.848161][ T8746] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.868601][ T8744] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 67.879376][ T8744] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.893476][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.902144][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.910670][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.919208][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 67.928312][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.936045][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.953256][ T8744] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.020006][ C1] divide error: 0000 [#1] PREEMPT SMP KASAN [ 68.025963][ C1] CPU: 1 PID: 2999 Comm: kworker/1:2 Not tainted 5.4.0-rc4 #0 [ 68.033505][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.043560][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 68.049522][ C1] RIP: 0010:tabledist.part.0+0x13f/0x170 [ 68.055128][ C1] Code: e8 48 83 c4 08 5b 41 5c 41 5d 41 5e 5d c3 e8 b8 c2 a2 fb 48 81 eb 00 10 00 00 eb a5 e8 aa c2 a2 fb 43 8d 0c 24 44 89 f0 31 d2 f1 4d 29 e5 49 01 d5 eb c5 48 89 df e8 2f 21 de fb e9 0d ff ff [ 68.074745][ C1] RSP: 0018:ffff8880ae908b68 EFLAGS: 00010246 [ 68.080799][ C1] RAX: 00000000fdfa4135 RBX: 0000000000000000 RCX: 0000000000000000 [ 68.088762][ C1] RDX: 0000000000000000 RSI: ffffffff85d05296 RDI: 0000000000000005 [ 68.096708][ C1] RBP: ffff8880ae908b90 R08: ffff88809fc8e340 R09: ffffed10148d2c2f [ 68.104655][ C1] R10: ffffed10148d2c2e R11: ffff8880a4696177 R12: ffffffff80000000 [ 68.112617][ C1] R13: 0000000000000000 R14: 00000000fdfa4135 R15: ffff8880a4696000 [ 68.120569][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 68.129505][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.136062][ C1] CR2: 00000000004c7108 CR3: 0000000008e6d000 CR4: 00000000001406e0 [ 68.144026][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.151971][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.159915][ C1] Call Trace: [ 68.163172][ C1] [ 68.166022][ C1] netem_enqueue+0x416/0x2e10 [ 68.170679][ C1] ? lock_acquire+0x190/0x410 [ 68.175641][ C1] __dev_queue_xmit+0x157e/0x3720 [ 68.180639][ C1] ? process_backlog+0x206/0x750 [ 68.185565][ C1] ? net_rx_action+0x508/0x1120 [ 68.190406][ C1] ? __do_softirq+0x262/0x98c [ 68.195061][ C1] ? do_softirq_own_stack+0x2a/0x40 [ 68.200248][ C1] ? do_softirq.part.0+0x11a/0x170 [ 68.205337][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 68.210601][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.216842][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.222973][ C1] ? rcu_read_lock_held+0x9c/0xb0 [ 68.227974][ C1] dev_queue_xmit+0x18/0x20 [ 68.232453][ C1] ? dev_queue_xmit+0x18/0x20 [ 68.237107][ C1] br_dev_queue_push_xmit+0x3f3/0x5e0 [ 68.242455][ C1] ? __skb_ext_del+0xb0/0x2c0 [ 68.247192][ C1] ? lock_downgrade+0x920/0x920 [ 68.252049][ C1] br_nf_dev_queue_xmit+0x34e/0x14b0 [ 68.257324][ C1] br_nf_post_routing+0x1502/0x1d30 [ 68.262513][ C1] ? br_nf_dev_queue_xmit+0x14b0/0x14b0 [ 68.268040][ C1] ? nf_bridge_update_protocol+0x1d0/0x1d0 [ 68.273827][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.279960][ C1] nf_hook_slow+0xbc/0x1e0 [ 68.284354][ C1] br_forward_finish+0x215/0x400 [ 68.289271][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 68.294805][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.300954][ C1] ? br_fdb_add.cold+0x83/0x83 [ 68.305709][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 68.311412][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 68.315998][ C1] br_nf_hook_thresh+0x2e9/0x370 [ 68.320927][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 68.326461][ C1] ? setup_pre_routing+0x4b0/0x4b0 [ 68.331562][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 68.337084][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.343301][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 68.349170][ C1] br_nf_forward_finish+0x66c/0xa90 [ 68.354344][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 68.359868][ C1] br_nf_forward_ip+0xc74/0x21e0 [ 68.364783][ C1] ? br_nf_forward_arp+0x1670/0x1670 [ 68.370269][ C1] ? br_nf_hook_thresh+0x370/0x370 [ 68.375414][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.381550][ C1] nf_hook_slow+0xbc/0x1e0 [ 68.385951][ C1] __br_forward+0x393/0xb00 [ 68.390430][ C1] ? br_forward_finish+0x400/0x400 [ 68.395521][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 68.401047][ C1] deliver_clone+0x61/0xc0 [ 68.405440][ C1] br_flood+0x325/0x3d0 [ 68.409574][ C1] br_handle_frame_finish+0xb46/0x1670 [ 68.415043][ C1] ? br_handle_local_finish+0x20/0x20 [ 68.420429][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.426573][ C1] ? rcu_read_lock_held+0x9c/0xb0 [ 68.431655][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 68.437366][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 68.441937][ C1] br_nf_hook_thresh+0x2e9/0x370 [ 68.446856][ C1] ? br_handle_local_finish+0x20/0x20 [ 68.452203][ C1] ? setup_pre_routing+0x4b0/0x4b0 [ 68.457294][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.463426][ C1] ? br_handle_local_finish+0x20/0x20 [ 68.468783][ C1] ? rcu_read_lock_held+0x9c/0xb0 [ 68.473784][ C1] ? rcu_read_lock_held_common+0x130/0x130 [ 68.479578][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 68.485447][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 68.491318][ C1] br_nf_pre_routing_finish_ipv6+0x6fa/0xdb0 [ 68.497276][ C1] ? br_handle_local_finish+0x20/0x20 [ 68.502633][ C1] ? __kasan_check_read+0x11/0x20 [ 68.507635][ C1] br_nf_pre_routing_ipv6+0x456/0x840 [ 68.512984][ C1] ? br_validate_ipv6+0xb80/0xb80 [ 68.517988][ C1] ? br_nf_pre_routing.cold+0x2f/0x2f [ 68.523337][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.529554][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 68.535775][ C1] ? skb_pull_rcsum+0x155/0x300 [ 68.540603][ C1] br_nf_pre_routing+0x18af/0x22d1 [ 68.545727][ C1] ? br_nf_pre_routing_finish+0x17a0/0x17a0 [ 68.551628][ C1] ? br_nf_pre_routing_finish+0x17a0/0x17a0 [ 68.557505][ C1] br_handle_frame+0x806/0x1340 [ 68.562388][ C1] ? br_handle_frame_finish+0x1670/0x1670 [ 68.568087][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 68.574221][ C1] ? br_handle_local_finish+0x20/0x20 [ 68.579585][ C1] ? rcu_read_lock_held_common+0x130/0x130 [ 68.585393][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.591618][ C1] ? br_handle_frame_finish+0x1670/0x1670 [ 68.597318][ C1] __netif_receive_skb_core+0xfc1/0x3060 [ 68.602927][ C1] ? __kasan_check_read+0x11/0x20 [ 68.607928][ C1] ? do_xdp_generic+0x50/0x50 [ 68.612668][ C1] ? __kasan_check_read+0x11/0x20 [ 68.617669][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 68.622581][ C1] ? swake_up_one+0x4d/0x60 [ 68.627174][ C1] __netif_receive_skb_one_core+0xa8/0x1a0 [ 68.632967][ C1] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 68.638929][ C1] ? __netif_receive_skb_core+0x3060/0x3060 [ 68.644803][ C1] ? lock_acquire+0x190/0x410 [ 68.649458][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.655672][ C1] __netif_receive_skb+0x2c/0x1d0 [ 68.660673][ C1] process_backlog+0x206/0x750 [ 68.665409][ C1] ? net_rx_action+0x27b/0x1120 [ 68.670237][ C1] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 68.675497][ C1] net_rx_action+0x508/0x1120 [ 68.680149][ C1] ? napi_busy_loop+0x970/0x970 [ 68.684976][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.690511][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.696475][ C1] ? ip6_finish_output2+0x106d/0x2550 [ 68.701836][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.708065][ C1] __do_softirq+0x262/0x98c [ 68.712559][ C1] ? ip6_finish_output2+0x106d/0x2550 [ 68.717906][ C1] do_softirq_own_stack+0x2a/0x40 [ 68.722900][ C1] [ 68.725814][ C1] do_softirq.part.0+0x11a/0x170 [ 68.730734][ C1] __local_bh_enable_ip+0x211/0x270 [ 68.735907][ C1] ip6_finish_output2+0x10a0/0x2550 [ 68.741081][ C1] ? ip6_mtu+0x2e6/0x460 [ 68.745316][ C1] ? ip6_sk_dst_lookup_flow+0xb90/0xb90 [ 68.750850][ C1] ? lock_downgrade+0x920/0x920 [ 68.755679][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.761897][ C1] ? __kasan_check_read+0x11/0x20 [ 68.766896][ C1] __ip6_finish_output+0x444/0xaa0 [ 68.771992][ C1] ? __ip6_finish_output+0x444/0xaa0 [ 68.777255][ C1] ip6_finish_output+0x38/0x1f0 [ 68.782080][ C1] ip6_output+0x235/0x7f0 [ 68.786498][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 68.791614][ C1] ? __ip6_finish_output+0xaa0/0xaa0 [ 68.797017][ C1] ndisc_send_skb+0xf29/0x14a0 [ 68.801770][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 68.807042][ C1] ? skb_set_owner_w+0x21b/0x320 [ 68.812001][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 68.817698][ C1] ndisc_send_ns+0x3a9/0x850 [ 68.822266][ C1] ? mark_held_locks+0xa4/0xf0 [ 68.827005][ C1] ? ndisc_netdev_event+0x4e0/0x4e0 [ 68.832203][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 68.837478][ C1] ? addrconf_dad_work+0xac4/0x1150 [ 68.842712][ C1] ? trace_hardirqs_on+0x67/0x240 [ 68.847729][ C1] ? addrconf_dad_work+0xac4/0x1150 [ 68.852922][ C1] addrconf_dad_work+0xb88/0x1150 [ 68.857938][ C1] ? addrconf_dad_completed+0xbb0/0xbb0 [ 68.863463][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.869432][ C1] ? trace_hardirqs_on+0x67/0x240 [ 68.874434][ C1] process_one_work+0x9af/0x1740 [ 68.879350][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 68.884762][ C1] ? lock_acquire+0x190/0x410 [ 68.889461][ C1] worker_thread+0x98/0xe40 [ 68.893961][ C1] ? trace_hardirqs_on+0x67/0x240 [ 68.898967][ C1] kthread+0x361/0x430 [ 68.903014][ C1] ? process_one_work+0x1740/0x1740 [ 68.908189][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 68.913885][ C1] ret_from_fork+0x24/0x30 [ 68.918272][ C1] Modules linked in: [ 68.922214][ C1] ---[ end trace f86568faa4e049e0 ]--- [ 68.927692][ C1] RIP: 0010:tabledist.part.0+0x13f/0x170 [ 68.933352][ C1] Code: e8 48 83 c4 08 5b 41 5c 41 5d 41 5e 5d c3 e8 b8 c2 a2 fb 48 81 eb 00 10 00 00 eb a5 e8 aa c2 a2 fb 43 8d 0c 24 44 89 f0 31 d2 f1 4d 29 e5 49 01 d5 eb c5 48 89 df e8 2f 21 de fb e9 0d ff ff [ 68.952961][ C1] RSP: 0018:ffff8880ae908b68 EFLAGS: 00010246 [ 68.959016][ C1] RAX: 00000000fdfa4135 RBX: 0000000000000000 RCX: 0000000000000000 [ 68.966995][ C1] RDX: 0000000000000000 RSI: ffffffff85d05296 RDI: 0000000000000005 [ 68.974974][ C1] RBP: ffff8880ae908b90 R08: ffff88809fc8e340 R09: ffffed10148d2c2f [ 68.982951][ C1] R10: ffffed10148d2c2e R11: ffff8880a4696177 R12: ffffffff80000000 [ 68.990919][ C1] R13: 0000000000000000 R14: 00000000fdfa4135 R15: ffff8880a4696000 [ 68.998876][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 69.007799][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.014374][ C1] CR2: 00000000004c7108 CR3: 0000000008e6d000 CR4: 00000000001406e0 [ 69.022343][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.030310][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.038274][ C1] Kernel panic - not syncing: Fatal exception in interrupt [ 69.046704][ C1] Kernel Offset: disabled [ 69.051029][ C1] Rebooting in 86400 seconds..