[ OK ] Reached target Graphical Interface. 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 '10.128.10.49' (ECDSA) to the list of known hosts. syzkaller login: [ 35.029004] IPVS: ftp: loaded support on port[0] = 21 [ 35.098958] chnl_net:caif_netlink_parms(): no params data found [ 35.176265] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.183428] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.190796] device bridge_slave_0 entered promiscuous mode [ 35.197908] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.205255] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.212602] device bridge_slave_1 entered promiscuous mode [ 35.230959] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.239654] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.257857] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.265685] team0: Port device team_slave_0 added [ 35.272064] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.279237] team0: Port device team_slave_1 added [ 35.295194] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.301488] 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. [ 35.326764] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.338064] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.344399] 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. [ 35.369798] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.380802] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 35.388130] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 35.407315] device hsr_slave_0 entered promiscuous mode [ 35.413160] device hsr_slave_1 entered promiscuous mode [ 35.419155] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 35.426366] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 35.492538] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.499030] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.505895] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.512333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.541922] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 35.548234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.557653] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 35.566954] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.575448] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.584054] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.591426] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 35.601692] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 35.607834] 8021q: adding VLAN 0 to HW filter on device team0 [ 35.618202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.625919] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.632315] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.642484] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 35.650912] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.657248] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.673171] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.681318] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.693060] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 35.705196] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 35.716414] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 35.724007] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 35.731148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 35.738719] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 35.746645] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 35.760348] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 35.767526] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 35.774632] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 35.784379] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 35.797474] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 35.806553] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 35.837019] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 35.844349] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 35.851023] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 35.860077] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 35.867534] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 35.874632] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 35.883515] device veth0_vlan entered promiscuous mode [ 35.893201] device veth1_vlan entered promiscuous mode [ 35.899133] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 35.908415] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 35.919647] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 35.929421] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 35.937908] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 35.945443] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 35.956236] device veth0_macvtap entered promiscuous mode [ 35.962765] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 35.971242] device veth1_macvtap entered promiscuous mode [ 35.979928] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 35.988972] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.000127] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.006978] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.015574] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 36.025428] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 36.033092] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program [ 36.126278] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 36.134543] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.142298] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.165359] ------------[ cut here ]------------ [ 36.170213] Illegal XDP return value 4294967274, expect packet loss! [ 36.176954] WARNING: CPU: 0 PID: 8335 at net/core/filter.c:5537 bpf_warn_invalid_xdp_action+0x6f/0x80 [ 36.186292] Kernel panic - not syncing: panic_on_warn set ... [ 36.186292] [ 36.193639] CPU: 0 PID: 8335 Comm: syz-executor931 Not tainted 4.19.211-syzkaller #0 [ 36.201497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.210830] Call Trace: [ 36.213392] [ 36.215529] dump_stack+0x1fc/0x2ef [ 36.219139] panic+0x26a/0x50e [ 36.222313] ? __warn_printk+0xf3/0xf3 [ 36.226182] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 36.231266] ? __probe_kernel_read+0x130/0x1b0 [ 36.235828] ? __warn.cold+0x5/0x5a [ 36.239436] ? __warn+0xe4/0x200 [ 36.242788] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 36.247962] __warn.cold+0x20/0x5a [ 36.251481] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 36.256561] report_bug+0x262/0x2b0 [ 36.260169] do_error_trap+0x1d7/0x310 [ 36.264037] ? math_error+0x310/0x310 [ 36.267818] ? irq_work_claim+0xa6/0xc0 [ 36.271836] ? irq_work_queue+0x29/0x80 [ 36.275794] ? error_entry+0x72/0xd0 [ 36.279488] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.284493] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.289321] invalid_op+0x14/0x20 [ 36.292757] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 [ 36.298461] 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 [ 36.317345] RSP: 0018:ffff8880ba007cb8 EFLAGS: 00010282 [ 36.322692] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.329947] RDX: 0000000000000100 RSI: ffffffff814dff01 RDI: ffffed1017400f89 [ 36.337202] RBP: ffffffff894d4ae0 R08: 0000000000000001 R09: 0000000000000000 [ 36.344450] R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffea [ 36.351889] R13: ffff8880ba007dc0 R14: ffff8880b300ad80 R15: dffffc0000000000 [ 36.359146] ? vprintk_func+0x81/0x180 [ 36.363019] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 36.368113] veth_poll+0x1498/0x3490 [ 36.371811] ? veth_xdp_tx+0x390/0x390 [ 36.375692] ? try_to_wake_up+0x733/0x1050 [ 36.379911] ? lock_downgrade+0x720/0x720 [ 36.384042] ? trace_hardirqs_off+0x64/0x200 [ 36.388441] ? net_rx_action+0x260/0xfb0 [ 36.392482] net_rx_action+0x4ac/0xfb0 [ 36.396353] ? napi_complete_done+0x570/0x570 [ 36.400827] ? check_preemption_disabled+0x41/0x280 [ 36.405837] __do_softirq+0x265/0x980 [ 36.409634] do_softirq_own_stack+0x2a/0x40 [ 36.413938] [ 36.416157] do_softirq.part.0+0x160/0x1c0 [ 36.420371] ? __dev_queue_xmit+0x15f5/0x2e00 [ 36.424843] __local_bh_enable_ip+0x20e/0x270 [ 36.429322] __dev_queue_xmit+0x1628/0x2e00 [ 36.433649] ? __kmalloc_node_track_caller+0x38/0x70 [ 36.438732] ? netdev_pick_tx+0x2f0/0x2f0 [ 36.442874] ? skb_release_data+0x135/0x920 [ 36.447178] ? kmem_cache_alloc_node_trace+0x351/0x3b0 [ 36.452705] ? skb_headers_offset_update+0x12e/0x260 [ 36.457786] ? pskb_expand_head+0x59e/0xf20 [ 36.462092] __bpf_redirect+0x746/0xbc0 [ 36.466078] ? skb_ensure_writable+0xee/0x470 [ 36.470581] bpf_clone_redirect+0x2c0/0x430 [ 36.474891] ? __bpf_address_lookup+0x330/0x330 [ 36.479554] ? __bpf_redirect+0xbc0/0xbc0 [ 36.483685] ___bpf_prog_run+0x1bfa/0x4e80 [ 36.487903] ? is_bpf_text_address+0xfc/0x1b0 [ 36.492406] ? __bpf_prog_run512+0x99/0xe0 [ 36.496622] ? __bpf_prog_run_args32+0x110/0x110 [ 36.501532] ? __save_stack_trace+0xaf/0x190 [ 36.505926] ? __lock_acquire+0x6de/0x3ff0 [ 36.510155] ? __lock_acquire+0x6de/0x3ff0 [ 36.514384] ? mark_held_locks+0xf0/0xf0 [ 36.518427] ? mark_held_locks+0xf0/0xf0 [ 36.522478] ? bpf_test_run+0x71/0x440 [ 36.526353] ? bpf_test_run+0x71/0x440 [ 36.530221] ? lock_acquire+0x170/0x3c0 [ 36.534180] ? bpf_test_run+0x1dd/0x440 [ 36.538134] ? check_preemption_disabled+0x41/0x280 [ 36.543135] ? bpf_test_run+0x109/0x440 [ 36.547102] ? bpf_prog_test_run_skb+0x579/0x9c0 [ 36.551861] ? bpf_test_finish.isra.0+0x1a0/0x1a0 [ 36.556684] ? bpf_prog_add+0x65/0xd0 [ 36.560465] ? bpf_test_finish.isra.0+0x1a0/0x1a0 [ 36.565284] ? __se_sys_bpf+0xc9e/0x3a20 [ 36.569331] ? lock_downgrade+0x720/0x720 [ 36.573467] ? bpf_prog_load+0x1230/0x1230 [ 36.577699] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.583045] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.588038] ? do_syscall_64+0x21/0x620 [ 36.591994] ? do_syscall_64+0xf9/0x620 [ 36.595950] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.601671] Kernel Offset: disabled [ 36.605320] Rebooting in 86400 seconds..