[ 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 '10.128.0.176' (ECDSA) to the list of known hosts. syzkaller login: [ 43.018278] IPVS: ftp: loaded support on port[0] = 21 [ 43.101356] chnl_net:caif_netlink_parms(): no params data found [ 43.227352] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.234806] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.242161] device bridge_slave_0 entered promiscuous mode [ 43.250701] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.257413] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.264872] device bridge_slave_1 entered promiscuous mode [ 43.284926] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 43.293997] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 43.314720] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.322520] team0: Port device team_slave_0 added [ 43.329275] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.337020] team0: Port device team_slave_1 added [ 43.354358] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 43.360639] 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. [ 43.386889] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 43.398833] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 43.405176] 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. [ 43.431249] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 43.442546] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.450153] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.515756] device hsr_slave_0 entered promiscuous mode [ 43.552766] device hsr_slave_1 entered promiscuous mode [ 43.592989] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 43.600482] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 43.679050] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.686232] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.693481] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.700774] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.738399] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 43.745460] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.755822] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.765610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.785589] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.793003] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.800442] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 43.813243] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 43.819926] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.830193] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.838636] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.845257] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.856070] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.864878] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.871341] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.889316] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.897228] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.910358] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.920802] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.935174] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 43.946027] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 43.953127] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.961712] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.978333] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 43.987000] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 43.994652] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 44.007952] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.020924] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 44.032177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 44.073976] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 44.081379] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 44.088918] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 44.099217] IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready [ 44.106267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 44.114819] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 44.124816] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 44.132146] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 44.140131] device veth0_vlan entered promiscuous mode [ 44.149958] device veth1_vlan entered promiscuous mode [ 44.156791] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 44.166040] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 44.178915] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 44.189481] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready [ 44.197129] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 44.205360] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 44.214464] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 44.223455] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 44.234218] device veth0_macvtap entered promiscuous mode [ 44.240798] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 44.251121] device veth1_macvtap entered promiscuous mode [ 44.258249] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready [ 44.267925] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 44.279206] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 44.290162] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 44.298381] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 44.305613] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 44.313545] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 44.320730] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 44.329103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 44.340437] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 44.349660] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 44.357509] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 44.366754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 44.482345] ------------[ cut here ]------------ [ 44.487432] Illegal XDP return value 1476468106, expect packet loss! [ 44.494375] WARNING: CPU: 0 PID: 9 at net/core/filter.c:5535 bpf_warn_invalid_xdp_action+0x6f/0x80 [ 44.503494] Kernel panic - not syncing: panic_on_warn set ... [ 44.503494] [ 44.510954] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.115-syzkaller #0 [ 44.519281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.528640] Call Trace: [ 44.531234] dump_stack+0x188/0x20d [ 44.535053] panic+0x26a/0x50e [ 44.538233] ? __warn_printk+0xf3/0xf3 [ 44.542113] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 44.547263] ? __probe_kernel_read+0x16c/0x1b0 [ 44.552206] ? __warn.cold+0x5/0x46 [ 44.555950] ? __warn+0xe4/0x1c0 [ 44.559320] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 44.564424] __warn.cold+0x20/0x46 [ 44.567968] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 44.573084] report_bug+0x262/0x2a0 [ 44.576808] do_error_trap+0x1d7/0x310 [ 44.580693] ? math_error+0x310/0x310 [ 44.584584] ? irq_work_queue+0x2b/0x80 [ 44.588546] ? wake_up_klogd+0x8c/0xc0 [ 44.592477] ? vprintk_emit+0x1d0/0x6e0 [ 44.596541] ? trace_hardirqs_off_caller+0x55/0x210 [ 44.601653] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.606498] invalid_op+0x14/0x20 [ 44.609952] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 [ 44.615752] Code: 20 a6 0a 88 41 83 fc 04 48 c7 c6 60 a6 0a 88 48 0f 46 ee e8 73 30 c2 fb 44 89 e2 48 c7 c7 a0 a6 0a 88 48 89 ee e8 ec 44 97 fb <0f> 0b 5b 5d 41 5c e9 56 30 c2 fb 66 0f 1f 44 00 00 41 57 41 56 49 [ 44.634645] RSP: 0018:ffff8880a9ea7b20 EFLAGS: 00010286 [ 44.639999] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 44.647353] RDX: 0000000000000100 RSI: ffffffff8152d3a1 RDI: ffffed10153d4f56 [ 44.655055] RBP: ffffffff880aa620 R08: ffff8880a9e96240 R09: ffffed1015cc5079 [ 44.662328] R10: ffffed1015cc5078 R11: ffff8880ae6283c7 R12: 0000000058011d8a [ 44.669590] R13: ffff8880a7bc8500 R14: ffff8880a9ea7c30 R15: dffffc0000000000 [ 44.677020] ? vprintk_func+0x81/0x17e [ 44.680968] veth_poll+0x1259/0x3500 [ 44.684699] ? veth_xmit+0x860/0x860 [ 44.688417] ? process_backlog+0x473/0x7c0 [ 44.692686] net_rx_action+0x4ab/0xfc0 [ 44.696578] ? napi_complete_done+0x4e0/0x4e0 [ 44.701215] ? sched_clock+0x2a/0x40 [ 44.704926] __do_softirq+0x26c/0x93c [ 44.708731] ? takeover_tasklets+0x7a0/0x7a0 [ 44.713146] run_ksoftirqd+0x89/0x100 [ 44.717288] smpboot_thread_fn+0x653/0x9d0 [ 44.721711] ? __kthread_parkme+0x5b/0x1b0 [ 44.726863] ? sort_range+0x30/0x30 [ 44.730486] ? __kthread_parkme+0xfd/0x1b0 [ 44.734875] ? sort_range+0x30/0x30 [ 44.738503] kthread+0x34a/0x420 [ 44.742984] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 44.749124] ret_from_fork+0x24/0x30 [ 44.754737] Kernel Offset: disabled [ 44.758525] Rebooting in 86400 seconds..