Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. syzkaller login: [ 43.728867] IPVS: ftp: loaded support on port[0] = 21 [ 43.812781] chnl_net:caif_netlink_parms(): no params data found [ 43.952827] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.959703] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.968698] device bridge_slave_0 entered promiscuous mode [ 43.976515] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.982982] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.993759] device bridge_slave_1 entered promiscuous mode [ 44.013427] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 44.022987] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 44.043965] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 44.053350] team0: Port device team_slave_0 added [ 44.059623] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 44.067455] team0: Port device team_slave_1 added [ 44.084337] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.090731] 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. [ 44.116075] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.128207] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.134453] 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. [ 44.160384] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 44.171304] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 44.179209] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 44.249311] device hsr_slave_0 entered promiscuous mode [ 44.306530] device hsr_slave_1 entered promiscuous mode [ 44.347048] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 44.354577] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 44.431431] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.437946] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.444804] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.451301] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.488246] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 44.494361] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.504453] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 44.513959] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.533112] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.540640] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.549647] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 44.560441] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 44.567421] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.577504] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.585429] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.591895] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.601807] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.610557] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.617050] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.634457] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.642368] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.654494] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.665344] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.678747] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 44.691180] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.699273] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.712420] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 44.719798] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.729698] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 44.737626] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 44.751086] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.763709] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 44.774494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 44.808983] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 44.818111] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 44.824724] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 44.834413] IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready [ 44.842144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 44.850841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 44.859534] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 44.867485] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 44.877469] device veth0_vlan entered promiscuous mode [ 44.888302] device veth1_vlan entered promiscuous mode [ 44.894300] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 44.903662] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 44.916253] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 44.927443] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready [ 44.934347] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 44.942170] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 44.950223] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 44.958400] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 44.969155] device veth0_macvtap entered promiscuous mode [ 44.975411] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 44.983575] device veth1_macvtap entered promiscuous mode [ 44.990265] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready [ 44.999494] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 45.009460] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 45.019498] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 45.027031] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 45.033758] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 45.041654] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 45.049232] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 45.058696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 45.070247] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 45.077609] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 45.084147] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 45.092247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 45.240303] netlink: 17 bytes leftover after parsing attributes in process `syz-executor790'. [ 45.249821] netlink: 32 bytes leftover after parsing attributes in process `syz-executor790'. [ 45.260285] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.273769] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.286781] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.299551] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.312528] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.325629] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 executing program [ 45.339122] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.351951] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.364897] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.378469] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6670 comm=syz-executor790 [ 45.450049] netlink: 17 bytes leftover after parsing attributes in process `syz-executor790'. [ 45.460510] netlink: 32 bytes leftover after parsing attributes in process `syz-executor790'. executing program [ 45.647966] netlink: 17 bytes leftover after parsing attributes in process `syz-executor790'. [ 45.656836] netlink: 32 bytes leftover after parsing attributes in process `syz-executor790'. executing program [ 45.839832] netlink: 17 bytes leftover after parsing attributes in process `syz-executor790'. [ 45.848729] netlink: 32 bytes leftover after parsing attributes in process `syz-executor790'. [ 45.927722] divide error: 0000 [#1] PREEMPT SMP KASAN [ 45.933062] CPU: 1 PID: 3388 Comm: kworker/1:2 Not tainted 4.19.115-syzkaller #0 [ 45.940618] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.950020] Workqueue: ipv6_addrconf addrconf_dad_work [ 45.955312] RIP: 0010:tabledist.part.0+0x134/0x160 [ 45.960247] Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 d3 3b ab fb 48 81 eb 00 10 00 00 eb aa e8 c5 3b ab fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 fa 06 e1 fb e9 13 ff ff [ 45.979175] RSP: 0018:ffff88809b3bf528 EFLAGS: 00010246 [ 45.984708] RAX: 00000000fc99afad RBX: 0000000000000000 RCX: 0000000000000000 [ 45.991973] RDX: 0000000000000000 RSI: ffffffff85bc68ab RDI: 0000000000000005 [ 45.999252] RBP: ffffffff80000000 R08: ffff88809b3ee640 R09: ffffed1013677e9d [ 46.006549] R10: ffffed1013677e9c R11: 0000000000000003 R12: 0000003e42c00000 [ 46.013838] R13: 00000000fc99afad R14: 0000000000000000 R15: ffff8880a4b70000 [ 46.021119] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 46.029361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.035244] CR2: 0000000020000140 CR3: 000000009fb76000 CR4: 00000000001406e0 [ 46.042540] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.049852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.057126] Call Trace: [ 46.059724] netem_enqueue+0x40d/0x29e0 [ 46.063707] ? __dev_queue_xmit+0x14aa/0x3040 [ 46.068208] __dev_queue_xmit+0x156b/0x3040 [ 46.072544] ? mark_held_locks+0xf0/0xf0 [ 46.076609] ? netdev_pick_tx+0x2f0/0x2f0 [ 46.080778] ? find_held_lock+0x2d/0x110 [ 46.084836] ? ip6_finish_output+0x571/0xbe0 [ 46.089253] ? mark_held_locks+0xa6/0xf0 [ 46.093434] ? ip6_finish_output2+0x1301/0x2540 [ 46.098102] ip6_finish_output2+0x1301/0x2540 [ 46.102620] ? ip6_copy_metadata+0xc40/0xc40 [ 46.107060] ? lock_downgrade+0x740/0x740 [ 46.111212] ? check_preemption_disabled+0x41/0x280 [ 46.116245] ? ip6_finish_output+0x571/0xbe0 [ 46.120665] ip6_finish_output+0x571/0xbe0 [ 46.124916] ip6_output+0x209/0x760 [ 46.128544] ? ip6_finish_output+0xbe0/0xbe0 [ 46.132964] ? mark_held_locks+0xa6/0xf0 [ 46.137025] ? icmp6_dst_alloc+0x29c/0x410 [ 46.141261] ? ip6_fragment+0x3410/0x3410 [ 46.145414] mld_sendpack+0x972/0xde0 [ 46.149236] ? nf_hook.constprop.0+0x520/0x520 [ 46.153832] ? mark_held_locks+0xa6/0xf0 [ 46.157901] ? mld_send_initial_cr.part.0+0xf5/0x150 [ 46.163014] ? __local_bh_enable_ip+0x159/0x270 [ 46.167697] mld_send_initial_cr.part.0+0x107/0x150 [ 46.172717] ipv6_mc_dad_complete+0x192/0x1d0 [ 46.177220] addrconf_dad_completed+0x8ce/0xbb0 [ 46.181907] ? addrconf_rs_timer+0x680/0x680 [ 46.186324] ? mark_held_locks+0xa6/0xf0 [ 46.190393] ? addrconf_dad_work+0x773/0x1110 [ 46.194896] ? __local_bh_enable_ip+0x159/0x270 [ 46.199581] ? addrconf_dad_work+0x789/0x1110 [ 46.204088] addrconf_dad_work+0x789/0x1110 [ 46.208413] ? addrconf_dad_completed+0xbb0/0xbb0 [ 46.213259] process_one_work+0x91f/0x1640 [ 46.217510] ? pwq_dec_nr_in_flight+0x310/0x310 [ 46.222189] worker_thread+0x96/0xe20 [ 46.226086] ? process_one_work+0x1640/0x1640 [ 46.230590] kthread+0x34a/0x420 [ 46.233963] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 46.239511] ret_from_fork+0x24/0x30 [ 46.243223] Modules linked in: [ 46.246487] ---[ end trace f3dcefa26da2eae6 ]--- [ 46.251273] RIP: 0010:tabledist.part.0+0x134/0x160 [ 46.256246] Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 d3 3b ab fb 48 81 eb 00 10 00 00 eb aa e8 c5 3b ab fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 fa 06 e1 fb e9 13 ff ff executing program [ 46.275197] RSP: 0018:ffff88809b3bf528 EFLAGS: 00010246 [ 46.280578] RAX: 00000000fc99afad RBX: 0000000000000000 RCX: 0000000000000000 [ 46.287913] RDX: 0000000000000000 RSI: ffffffff85bc68ab RDI: 0000000000000005 [ 46.295242] RBP: ffffffff80000000 R08: ffff88809b3ee640 R09: ffffed1013677e9d [ 46.302526] R10: ffffed1013677e9c R11: 0000000000000003 R12: 0000003e42c00000 [ 46.309886] R13: 00000000fc99afad R14: 0000000000000000 R15: ffff8880a4b70000 [ 46.317267] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 46.325550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.331488] CR2: 0000000020000140 CR3: 0000000008a6d000 CR4: 00000000001406e0 [ 46.338804] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.346138] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.353465] Kernel panic - not syncing: Fatal exception in interrupt [ 46.361035] Kernel Offset: disabled [ 46.364668] Rebooting in 86400 seconds..