[ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts. syzkaller login: [ 60.075805][ T7048] IPVS: ftp: loaded support on port[0] = 21 [ 60.176534][ T7048] chnl_net:caif_netlink_parms(): no params data found [ 60.275534][ T7048] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.283161][ T7048] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.291808][ T7048] device bridge_slave_0 entered promiscuous mode [ 60.300083][ T7048] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.307893][ T7048] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.316089][ T7048] device bridge_slave_1 entered promiscuous mode [ 60.337691][ T7048] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.349029][ T7048] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.372089][ T7048] team0: Port device team_slave_0 added [ 60.379687][ T7048] team0: Port device team_slave_1 added [ 60.397799][ T7048] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.404869][ T7048] 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. [ 60.431620][ T7048] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.444406][ T7048] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.452073][ T7048] 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. [ 60.478694][ T7048] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.553286][ T7048] device hsr_slave_0 entered promiscuous mode [ 60.601192][ T7048] device hsr_slave_1 entered promiscuous mode [ 60.729075][ T7048] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.794758][ T7048] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.842849][ T7048] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.882693][ T7048] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.947719][ T7048] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.955095][ T7048] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.963000][ T7048] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.970059][ T7048] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.018478][ T7048] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.034000][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.044224][ T2787] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.053118][ T2787] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.062381][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 61.076974][ T7048] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.088821][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.097949][ T2848] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.105064][ T2848] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.116767][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.126343][ T2787] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.133457][ T2787] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.154182][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.163335][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.175544][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.185187][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.201998][ T7048] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.212632][ T7048] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.225693][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.234059][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.243041][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.252486][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.261047][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.284664][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.292973][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.306264][ T7048] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.324881][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 61.334202][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.355341][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 61.364141][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.373857][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.383317][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.392456][ T7048] device veth0_vlan entered promiscuous mode [ 61.404955][ T7048] device veth1_vlan entered promiscuous mode [ 61.425879][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.434301][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.443672][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 61.452551][ T2848] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.465074][ T7048] device veth0_macvtap entered promiscuous mode [ 61.474720][ T7048] device veth1_macvtap entered promiscuous mode [ 61.494089][ T7048] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.501517][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 61.509577][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 61.517995][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 61.526695][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.539124][ T7048] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.547728][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 61.556902][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 61.775231][ T7258] netlink: 17 bytes leftover after parsing attributes in process `syz-executor807'. [ 61.785136][ T7258] netlink: 32 bytes leftover after parsing attributes in process `syz-executor807'. [ 62.295860][ T2790] divide error: 0000 [#1] PREEMPT SMP KASAN [ 62.301761][ T2790] CPU: 1 PID: 2790 Comm: kworker/1:15 Not tainted 5.6.0-syzkaller #0 [ 62.309792][ T2790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.319833][ T2790] Workqueue: ipv6_addrconf addrconf_dad_work [ 62.325795][ T2790] RIP: 0010:tabledist.part.0+0x134/0x160 [ 62.331401][ T2790] Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 a3 63 2b fb 48 81 eb 00 10 00 00 eb aa e8 95 63 2b fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 5a 2a 69 fb e9 13 ff ff [ 62.351068][ T2790] RSP: 0018:ffffc900083474a8 EFLAGS: 00010246 [ 62.357114][ T2790] RAX: 000000006806d240 RBX: 0000000000000000 RCX: 0000000000000000 [ 62.365081][ T2790] RDX: 0000000000000000 RSI: ffffffff8647d06b RDI: 0000000000000005 [ 62.373064][ T2790] RBP: ffffffff80000000 R08: ffff88809fba0400 R09: ffffed1014f5746e [ 62.381009][ T2790] R10: ffff8880a7aba36f R11: ffffed1014f5746d R12: 0000003e42c00000 [ 62.388955][ T2790] R13: 000000006806d240 R14: ffff888093056330 R15: ffff888093056000 [ 62.396937][ T2790] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 62.405840][ T2790] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.412400][ T2790] CR2: 00007fc99bbcee78 CR3: 0000000009879000 CR4: 00000000001406e0 [ 62.420356][ T2790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.428318][ T2790] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.436272][ T2790] Call Trace: [ 62.439884][ T2790] netem_enqueue+0x412/0x2da0 [ 62.444539][ T2790] ? rwlock_bug.part.0+0x90/0x90 [ 62.449551][ T2790] ? rcu_read_lock_bh_held+0x5a/0xb0 [ 62.454814][ T2790] __dev_queue_xmit+0x154a/0x30a0 [ 62.459814][ T2790] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 62.465115][ T2790] ? mark_lock+0x120/0xf10 [ 62.469540][ T2790] ? __ip6_finish_output+0x442/0xab0 [ 62.474804][ T2790] ? print_usage_bug+0x240/0x240 [ 62.479714][ T2790] ? lock_release+0x800/0x800 [ 62.484378][ T2790] ? lock_downgrade+0x840/0x840 [ 62.489220][ T2790] ? rcu_lockdep_current_cpu_online+0xdc/0x130 [ 62.495355][ T2790] ? ip6_finish_output2+0xfb5/0x25b0 [ 62.500614][ T2790] ip6_finish_output2+0xfb5/0x25b0 [ 62.505733][ T2790] ? ip6_frag_next+0xb40/0xb40 [ 62.510479][ T2790] ? lock_downgrade+0x840/0x840 [ 62.515365][ T2790] ? __ip6_finish_output+0x442/0xab0 [ 62.520638][ T2790] __ip6_finish_output+0x442/0xab0 [ 62.525725][ T2790] ip6_finish_output+0x34/0x1f0 [ 62.530578][ T2790] ip6_output+0x239/0x810 [ 62.534911][ T2790] ? ip6_finish_output+0x1f0/0x1f0 [ 62.540292][ T2790] ? mark_held_locks+0x9f/0xe0 [ 62.545038][ T2790] ? __ip6_finish_output+0xab0/0xab0 [ 62.550300][ T2790] mld_sendpack+0x961/0xdf0 [ 62.554792][ T2790] ? nf_hook.constprop.0+0x520/0x520 [ 62.560052][ T2790] ? mark_held_locks+0x9f/0xe0 [ 62.564794][ T2790] ? __local_bh_enable_ip+0x159/0x270 [ 62.570146][ T2790] mld_send_initial_cr.part.0+0x107/0x150 [ 62.575842][ T2790] ipv6_mc_dad_complete+0x192/0x1d0 [ 62.581019][ T2790] addrconf_dad_completed+0x8ce/0xbb0 [ 62.586365][ T2790] ? addrconf_rs_timer+0x6e0/0x6e0 [ 62.591452][ T2790] ? mark_held_locks+0x9f/0xe0 [ 62.596189][ T2790] ? __local_bh_enable_ip+0x159/0x270 [ 62.601563][ T2790] ? addrconf_dad_work+0x7fd/0x1280 [ 62.606854][ T2790] addrconf_dad_work+0x7fd/0x1280 [ 62.611852][ T2790] ? addrconf_dad_completed+0xbb0/0xbb0 [ 62.617372][ T2790] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.622908][ T2790] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.628863][ T2790] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.634041][ T2790] process_one_work+0x965/0x16a0 [ 62.638952][ T2790] ? lock_release+0x800/0x800 [ 62.643603][ T2790] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.648944][ T2790] ? rwlock_bug.part.0+0x90/0x90 [ 62.653859][ T2790] worker_thread+0x96/0xe20 [ 62.658353][ T2790] ? process_one_work+0x16a0/0x16a0 [ 62.663525][ T2790] kthread+0x388/0x470 [ 62.667572][ T2790] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.673265][ T2790] ret_from_fork+0x24/0x30 [ 62.677659][ T2790] Modules linked in: [ 62.681643][ T2790] ---[ end trace d86c34e706f8f013 ]--- [ 62.687113][ T2790] RIP: 0010:tabledist.part.0+0x134/0x160 [ 62.692791][ T2790] Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 a3 63 2b fb 48 81 eb 00 10 00 00 eb aa e8 95 63 2b fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 5a 2a 69 fb e9 13 ff ff [ 62.712440][ T2790] RSP: 0018:ffffc900083474a8 EFLAGS: 00010246 [ 62.718505][ T2790] RAX: 000000006806d240 RBX: 0000000000000000 RCX: 0000000000000000 [ 62.726500][ T2790] RDX: 0000000000000000 RSI: ffffffff8647d06b RDI: 0000000000000005 [ 62.734616][ T2790] RBP: ffffffff80000000 R08: ffff88809fba0400 R09: ffffed1014f5746e [ 62.742980][ T2790] R10: ffff8880a7aba36f R11: ffffed1014f5746d R12: 0000003e42c00000 [ 62.751023][ T2790] R13: 000000006806d240 R14: ffff888093056330 R15: ffff888093056000 [ 62.758990][ T2790] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 62.767991][ T2790] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.774676][ T2790] CR2: 00007fc99bbcee78 CR3: 0000000009879000 CR4: 00000000001406e0 [ 62.782686][ T2790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.790690][ T2790] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.798689][ T2790] Kernel panic - not syncing: Fatal exception in interrupt [ 62.806912][ T2790] Kernel Offset: disabled [ 62.811227][ T2790] Rebooting in 86400 seconds..