[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts. 2020/05/27 22:06:43 parsed 1 programs 2020/05/27 22:06:47 executed programs: 0 syzkaller login: [ 119.195649][ T8851] IPVS: ftp: loaded support on port[0] = 21 [ 119.356695][ T8851] chnl_net:caif_netlink_parms(): no params data found [ 119.487694][ T8851] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.494882][ T8851] bridge0: port 1(bridge_slave_0) entered disabled state [ 119.504176][ T8851] device bridge_slave_0 entered promiscuous mode [ 119.515771][ T8851] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.523122][ T8851] bridge0: port 2(bridge_slave_1) entered disabled state [ 119.532407][ T8851] device bridge_slave_1 entered promiscuous mode [ 119.563929][ T8851] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 119.577604][ T8851] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 119.615193][ T8851] team0: Port device team_slave_0 added [ 119.625325][ T8851] team0: Port device team_slave_1 added [ 119.651998][ T8851] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 119.659069][ T8851] 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. [ 119.685186][ T8851] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 119.698376][ T8851] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 119.705571][ T8851] 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. [ 119.731746][ T8851] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 119.805839][ T8851] device hsr_slave_0 entered promiscuous mode [ 119.860924][ T8851] device hsr_slave_1 entered promiscuous mode [ 120.043373][ T8851] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 120.074159][ T8851] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 120.123594][ T8851] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 120.183341][ T8851] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 120.263708][ T8851] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.270917][ T8851] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.278678][ T8851] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.285907][ T8851] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.350359][ T8851] 8021q: adding VLAN 0 to HW filter on device bond0 [ 120.359576][ T2784] bridge0: port 1(bridge_slave_0) entered disabled state [ 120.371001][ T2784] bridge0: port 2(bridge_slave_1) entered disabled state [ 120.381730][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 120.409986][ T8851] 8021q: adding VLAN 0 to HW filter on device team0 [ 120.417354][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 120.426771][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 120.447362][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 120.456766][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 120.466130][ T2784] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.473590][ T2784] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.482658][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 120.492611][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 120.502071][ T2784] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.509390][ T2784] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.525174][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 120.544845][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 120.576654][ T8851] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 120.589211][ T8851] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 120.604709][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 120.615174][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 120.625441][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 120.635657][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 120.645152][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 120.654606][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 120.664746][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 120.674406][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 120.684919][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 120.694547][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 120.720798][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 120.728823][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 120.752014][ T8851] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 120.787961][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 120.798142][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 120.828456][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 120.840116][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 120.853308][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 120.862347][ T3899] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 120.876245][ T8851] device veth0_vlan entered promiscuous mode [ 120.895124][ T8851] device veth1_vlan entered promiscuous mode [ 120.925800][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 120.934925][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 120.944482][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 120.954397][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 120.970401][ T8851] device veth0_macvtap entered promiscuous mode [ 120.981391][ T8851] device veth1_macvtap entered promiscuous mode [ 121.011159][ T8851] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 121.019869][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 121.029188][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 121.038530][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 121.048514][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 121.070016][ T8851] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 121.092935][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 121.102295][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 121.315205][ T17] ===================================================== [ 121.322202][ T17] BUG: KMSAN: uninit-value in sk_filter_trim_cap+0x828/0xcc0 [ 121.329577][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.7.0-rc4-syzkaller #0 [ 121.337723][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.347789][ T17] Workqueue: ipv6_addrconf addrconf_dad_work [ 121.353787][ T17] Call Trace: [ 121.357089][ T17] dump_stack+0x1c9/0x220 [ 121.361426][ T17] kmsan_report+0xf7/0x1e0 [ 121.365854][ T17] __msan_warning+0x58/0xa0 [ 121.370367][ T17] sk_filter_trim_cap+0x828/0xcc0 [ 121.375621][ T17] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 121.381789][ T17] sock_queue_rcv_skb+0x83/0x130 [ 121.386738][ T17] packet_rcv_spkt+0x656/0x7c0 [ 121.392000][ T17] ? skb_clone+0x404/0x5d0 [ 121.396424][ T17] ? packet_rcv+0x2160/0x2160 [ 121.401104][ T17] dev_queue_xmit_nit+0x1199/0x1270 [ 121.406321][ T17] dev_hard_start_xmit+0x20f/0xab0 [ 121.411439][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.416647][ T17] __dev_queue_xmit+0x2f8d/0x3b20 [ 121.421672][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.426885][ T17] ? kmsan_memcpy_metadata+0xb/0x10 [ 121.432083][ T17] dev_queue_xmit+0x4b/0x60 [ 121.436571][ T17] neigh_resolve_output+0xab0/0xb40 [ 121.441766][ T17] ? neigh_event_ns+0x350/0x350 [ 121.446597][ T17] ip6_finish_output2+0x20fd/0x2640 [ 121.451781][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.456961][ T17] __ip6_finish_output+0x824/0x8e0 [ 121.462055][ T17] ip6_finish_output+0x166/0x410 [ 121.466976][ T17] ip6_output+0x60a/0x770 [ 121.471289][ T17] ? ip6_output+0x770/0x770 [ 121.475770][ T17] ? ac6_seq_show+0x200/0x200 [ 121.480423][ T17] ndisc_send_skb+0x1047/0x15a0 [ 121.485258][ T17] ? ndisc_error_report+0x1a0/0x1a0 [ 121.490434][ T17] ndisc_send_ns+0xe38/0xe80 [ 121.495001][ T17] ? __queue_delayed_work+0x27f/0x450 [ 121.500720][ T17] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.506510][ T17] addrconf_dad_work+0xc2e/0x2ac0 [ 121.511527][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.516714][ T17] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.522550][ T17] ? ipv6_get_saddr_eval+0x1350/0x1350 [ 121.528050][ T17] process_one_work+0x1555/0x1f40 [ 121.533072][ T17] worker_thread+0xef6/0x2450 [ 121.537735][ T17] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.543526][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.548720][ T17] kthread+0x4b5/0x4f0 [ 121.552780][ T17] ? process_one_work+0x1f40/0x1f40 [ 121.557972][ T17] ? kthread_blkcg+0xf0/0xf0 [ 121.562692][ T17] ret_from_fork+0x35/0x40 [ 121.567087][ T17] [ 121.569394][ T17] Uninit was stored to memory at: [ 121.574424][ T17] kmsan_internal_chain_origin+0xad/0x130 [ 121.580136][ T17] __msan_chain_origin+0x50/0x90 [ 121.585062][ T17] ___bpf_prog_run+0x6c64/0x97a0 [ 121.589981][ T17] __bpf_prog_run32+0x101/0x170 [ 121.594823][ T17] sk_filter_trim_cap+0x42a/0xcc0 [ 121.599848][ T17] sock_queue_rcv_skb+0x83/0x130 [ 121.604774][ T17] packet_rcv_spkt+0x656/0x7c0 [ 121.609533][ T17] dev_queue_xmit_nit+0x1199/0x1270 [ 121.614709][ T17] dev_hard_start_xmit+0x20f/0xab0 [ 121.619797][ T17] __dev_queue_xmit+0x2f8d/0x3b20 [ 121.624920][ T17] dev_queue_xmit+0x4b/0x60 [ 121.629404][ T17] neigh_resolve_output+0xab0/0xb40 [ 121.634593][ T17] ip6_finish_output2+0x20fd/0x2640 [ 121.639775][ T17] __ip6_finish_output+0x824/0x8e0 [ 121.644898][ T17] ip6_finish_output+0x166/0x410 [ 121.649811][ T17] ip6_output+0x60a/0x770 [ 121.654133][ T17] ndisc_send_skb+0x1047/0x15a0 [ 121.658959][ T17] ndisc_send_ns+0xe38/0xe80 [ 121.663540][ T17] addrconf_dad_work+0xc2e/0x2ac0 [ 121.668544][ T17] process_one_work+0x1555/0x1f40 [ 121.673563][ T17] worker_thread+0xef6/0x2450 [ 121.678238][ T17] kthread+0x4b5/0x4f0 [ 121.682297][ T17] ret_from_fork+0x35/0x40 [ 121.686683][ T17] [ 121.688989][ T17] Local variable ----regs@__bpf_prog_run32 created at: [ 121.695825][ T17] __bpf_prog_run32+0x87/0x170 [ 121.700563][ T17] __bpf_prog_run32+0x87/0x170 [ 121.705298][ T17] ===================================================== [ 121.712203][ T17] Disabling lock debugging due to kernel taint [ 121.718337][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 121.725018][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Tainted: G B 5.7.0-rc4-syzkaller #0 [ 121.734545][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.744586][ T17] Workqueue: ipv6_addrconf addrconf_dad_work [ 121.750547][ T17] Call Trace: [ 121.753939][ T17] dump_stack+0x1c9/0x220 [ 121.758262][ T17] panic+0x3d5/0xc3e [ 121.762149][ T17] kmsan_report+0x1df/0x1e0 [ 121.766648][ T17] __msan_warning+0x58/0xa0 [ 121.771171][ T17] sk_filter_trim_cap+0x828/0xcc0 [ 121.776202][ T17] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 121.782353][ T17] sock_queue_rcv_skb+0x83/0x130 [ 121.787287][ T17] packet_rcv_spkt+0x656/0x7c0 [ 121.792051][ T17] ? skb_clone+0x404/0x5d0 [ 121.796453][ T17] ? packet_rcv+0x2160/0x2160 [ 121.801119][ T17] dev_queue_xmit_nit+0x1199/0x1270 [ 121.806321][ T17] dev_hard_start_xmit+0x20f/0xab0 [ 121.811418][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.816633][ T17] __dev_queue_xmit+0x2f8d/0x3b20 [ 121.821636][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.826913][ T17] ? kmsan_memcpy_metadata+0xb/0x10 [ 121.832223][ T17] dev_queue_xmit+0x4b/0x60 [ 121.836726][ T17] neigh_resolve_output+0xab0/0xb40 [ 121.841927][ T17] ? neigh_event_ns+0x350/0x350 [ 121.846761][ T17] ip6_finish_output2+0x20fd/0x2640 [ 121.851947][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.857129][ T17] __ip6_finish_output+0x824/0x8e0 [ 121.862232][ T17] ip6_finish_output+0x166/0x410 [ 121.867154][ T17] ip6_output+0x60a/0x770 [ 121.871468][ T17] ? ip6_output+0x770/0x770 [ 121.875963][ T17] ? ac6_seq_show+0x200/0x200 [ 121.880628][ T17] ndisc_send_skb+0x1047/0x15a0 [ 121.885521][ T17] ? ndisc_error_report+0x1a0/0x1a0 [ 121.890704][ T17] ndisc_send_ns+0xe38/0xe80 [ 121.895314][ T17] ? __queue_delayed_work+0x27f/0x450 [ 121.900668][ T17] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.906515][ T17] addrconf_dad_work+0xc2e/0x2ac0 [ 121.911530][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.916719][ T17] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.922504][ T17] ? ipv6_get_saddr_eval+0x1350/0x1350 [ 121.927950][ T17] process_one_work+0x1555/0x1f40 [ 121.932961][ T17] worker_thread+0xef6/0x2450 [ 121.937630][ T17] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.943934][ T17] ? kmsan_get_metadata+0x11d/0x180 [ 121.949183][ T17] kthread+0x4b5/0x4f0 [ 121.953244][ T17] ? process_one_work+0x1f40/0x1f40 [ 121.958434][ T17] ? kthread_blkcg+0xf0/0xf0 [ 121.963046][ T17] ret_from_fork+0x35/0x40 [ 121.968644][ T17] Kernel Offset: 0xb200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 121.980169][ T17] Rebooting in 86400 seconds..