Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.98' (ECDSA) to the list of known hosts. syzkaller login: [ 32.812300] IPVS: ftp: loaded support on port[0] = 21 [ 32.882033] chnl_net:caif_netlink_parms(): no params data found [ 33.000893] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.007731] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.014764] device bridge_slave_0 entered promiscuous mode [ 33.022409] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.029159] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.036066] device bridge_slave_1 entered promiscuous mode [ 33.052915] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.061627] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.079236] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.087361] team0: Port device team_slave_0 added [ 33.092732] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.100510] team0: Port device team_slave_1 added [ 33.115141] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.121510] 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. [ 33.146720] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.158127] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.164371] 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. [ 33.189590] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.200296] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.207898] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.226938] device hsr_slave_0 entered promiscuous mode [ 33.232633] device hsr_slave_1 entered promiscuous mode [ 33.238940] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.246000] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 33.310190] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.316672] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.323472] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.329869] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.360415] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.368355] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.376563] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.384632] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.393858] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.401332] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.408765] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 33.419975] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 33.426059] 8021q: adding VLAN 0 to HW filter on device team0 [ 33.435824] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 33.444171] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.450560] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.460923] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 33.470671] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.477053] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.491858] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.499635] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 33.510034] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.522877] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 33.533822] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 33.544884] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 33.551614] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.559784] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.567615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 33.580979] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 33.588222] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.595006] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.607450] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 33.619623] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 33.629686] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.661858] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 33.669195] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 33.675604] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 33.684885] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.693037] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.700384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.709305] device veth0_vlan entered promiscuous mode [ 33.718048] device veth1_vlan entered promiscuous mode [ 33.723865] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 33.733006] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 33.743881] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 33.753558] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 33.761386] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 33.768993] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 33.779090] device veth0_macvtap entered promiscuous mode [ 33.785268] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 33.797267] device veth1_macvtap entered promiscuous mode [ 33.805683] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 33.815126] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 33.825337] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 33.832546] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 33.840760] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 33.850682] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 33.858563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program [ 33.951278] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 33.959665] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.967440] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.988974] ------------[ cut here ]------------ [ 33.993788] Illegal XDP return value 4294967274, expect packet loss! [ 34.000734] WARNING: CPU: 1 PID: 8329 at net/core/filter.c:5537 bpf_warn_invalid_xdp_action+0x6f/0x80 [ 34.010107] Kernel panic - not syncing: panic_on_warn set ... [ 34.010107] [ 34.017452] CPU: 1 PID: 8329 Comm: syz-executor769 Not tainted 4.19.211-syzkaller #0 [ 34.025324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.034655] Call Trace: [ 34.037217] [ 34.039354] dump_stack+0x1fc/0x2ef [ 34.042965] panic+0x26a/0x50e [ 34.046138] ? __warn_printk+0xf3/0xf3 [ 34.050019] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 34.055114] ? __probe_kernel_read+0x130/0x1b0 [ 34.059685] ? __warn.cold+0x5/0x5a [ 34.063305] ? __warn+0xe4/0x200 [ 34.066654] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 34.071756] __warn.cold+0x20/0x5a [ 34.075277] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 34.080377] report_bug+0x262/0x2b0 [ 34.083992] do_error_trap+0x1d7/0x310 [ 34.087866] ? math_error+0x310/0x310 [ 34.091659] ? __irq_work_queue_local+0x101/0x160 [ 34.096481] ? irq_work_queue+0x29/0x80 [ 34.100470] ? error_entry+0x72/0xd0 [ 34.104168] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.109179] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.114009] invalid_op+0x14/0x20 [ 34.117460] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 [ 34.123153] Code: e0 4a 4d 89 41 83 fc 04 48 c7 c6 20 4b 4d 89 48 0f 46 ee e8 53 5c e3 fa 44 89 e2 48 c7 c7 60 4b 4d 89 48 89 ee e8 26 94 73 01 <0f> 0b 5b 5d 41 5c e9 36 5c e3 fa 66 0f 1f 44 00 00 41 54 55 89 fd [ 34.142034] RSP: 0018:ffff8880ba107cb8 EFLAGS: 00010282 [ 34.147378] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 34.154630] RDX: 0000000000000100 RSI: ffffffff814dff01 RDI: ffffed1017420f89 [ 34.161879] RBP: ffffffff894d4ae0 R08: 0000000000000001 R09: 0000000000000000 [ 34.169129] R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffea [ 34.176381] R13: ffff8880ba107dc0 R14: ffff8880951f7680 R15: dffffc0000000000 [ 34.183641] ? vprintk_func+0x81/0x180 [ 34.187514] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 34.192598] veth_poll+0x1498/0x3490 [ 34.196304] ? veth_xdp_tx+0x390/0x390 [ 34.200196] ? check_preemption_disabled+0x41/0x280 [ 34.205197] ? check_preemption_disabled+0x41/0x280 [ 34.210197] ? __kfree_skb_flush+0x73/0x100 [ 34.214501] ? net_rx_action+0x260/0xfb0 [ 34.218544] net_rx_action+0x4ac/0xfb0 [ 34.222419] ? napi_complete_done+0x570/0x570 [ 34.226900] ? check_preemption_disabled+0x41/0x280 [ 34.231930] __do_softirq+0x265/0x980 [ 34.235733] do_softirq_own_stack+0x2a/0x40 [ 34.240032] [ 34.242266] do_softirq.part.0+0x160/0x1c0 [ 34.246481] ? __dev_queue_xmit+0x15f5/0x2e00 [ 34.250981] __local_bh_enable_ip+0x20e/0x270 [ 34.255470] __dev_queue_xmit+0x1628/0x2e00 [ 34.259777] ? __kmalloc_node_track_caller+0x38/0x70 [ 34.264861] ? netdev_pick_tx+0x2f0/0x2f0 [ 34.269007] ? skb_release_data+0x135/0x920 [ 34.273333] ? kmem_cache_alloc_node_trace+0x351/0x3b0 [ 34.278610] ? skb_headers_offset_update+0x12e/0x260 [ 34.283694] ? pskb_expand_head+0x59e/0xf20 [ 34.288024] __bpf_redirect+0x746/0xbc0 [ 34.291992] ? skb_ensure_writable+0xee/0x470 [ 34.296486] bpf_clone_redirect+0x2c0/0x430 [ 34.300806] ? __bpf_address_lookup+0x330/0x330 [ 34.305466] ? __bpf_redirect+0xbc0/0xbc0 [ 34.309597] ___bpf_prog_run+0x1bfa/0x4e80 [ 34.313815] ? is_bpf_text_address+0xfc/0x1b0 [ 34.318305] ? __bpf_prog_run512+0x99/0xe0 [ 34.322530] ? __bpf_prog_run_args32+0x110/0x110 [ 34.327316] ? __save_stack_trace+0xaf/0x190 [ 34.331717] ? __lock_acquire+0x6de/0x3ff0 [ 34.336068] ? __lock_acquire+0x6de/0x3ff0 [ 34.340290] ? mark_held_locks+0xf0/0xf0 [ 34.344334] ? mark_held_locks+0xf0/0xf0 [ 34.348457] ? bpf_test_run+0x71/0x440 [ 34.352346] ? bpf_test_run+0x71/0x440 [ 34.356226] ? lock_acquire+0x170/0x3c0 [ 34.360184] ? bpf_test_run+0x1dd/0x440 [ 34.364144] ? check_preemption_disabled+0x41/0x280 [ 34.369219] ? bpf_test_run+0x109/0x440 [ 34.373192] ? bpf_prog_test_run_skb+0x579/0x9c0 [ 34.377931] ? bpf_test_finish.isra.0+0x1a0/0x1a0 [ 34.382758] ? bpf_prog_add+0x65/0xd0 [ 34.386544] ? bpf_test_finish.isra.0+0x1a0/0x1a0 [ 34.391419] ? __se_sys_bpf+0xc9e/0x3a20 [ 34.395485] ? lock_downgrade+0x720/0x720 [ 34.399618] ? bpf_prog_load+0x1230/0x1230 [ 34.403840] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.409187] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.414187] ? do_syscall_64+0x21/0x620 [ 34.418164] ? do_syscall_64+0xf9/0x620 [ 34.422136] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.427879] Kernel Offset: disabled [ 34.431547] Rebooting in 86400 seconds..