[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. syzkaller login: [ 1057.288385][ T6562] cgroup: Unknown subsys name 'net' [ 1057.300049][ T6562] cgroup: Unknown subsys name 'rlimit' [ 1057.437255][ T6563] chnl_net:caif_netlink_parms(): no params data found [ 1057.504555][ T6563] bridge0: port 1(bridge_slave_0) entered blocking state [ 1057.514858][ T6563] bridge0: port 1(bridge_slave_0) entered disabled state [ 1057.523402][ T6563] device bridge_slave_0 entered promiscuous mode [ 1057.532575][ T6563] bridge0: port 2(bridge_slave_1) entered blocking state [ 1057.540605][ T6563] bridge0: port 2(bridge_slave_1) entered disabled state [ 1057.548510][ T6563] device bridge_slave_1 entered promiscuous mode [ 1057.581680][ T6563] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1057.592659][ T6563] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1057.627513][ T6563] team0: Port device team_slave_0 added [ 1057.635595][ T6563] team0: Port device team_slave_1 added [ 1057.663074][ T6563] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1057.670198][ T6563] 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. [ 1057.696722][ T6563] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1057.710697][ T6563] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1057.717779][ T6563] 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. [ 1057.743791][ T6563] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1057.782642][ T6563] device hsr_slave_0 entered promiscuous mode [ 1057.791599][ T6563] device hsr_slave_1 entered promiscuous mode [ 1057.914950][ T6563] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1057.929455][ T6563] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1057.939379][ T6563] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1057.950879][ T6563] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1057.976044][ T6563] bridge0: port 2(bridge_slave_1) entered blocking state [ 1057.983279][ T6563] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1057.991316][ T6563] bridge0: port 1(bridge_slave_0) entered blocking state [ 1057.998482][ T6563] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1058.045308][ T6563] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1058.060963][ T6556] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1058.073075][ T6556] bridge0: port 1(bridge_slave_0) entered disabled state [ 1058.082907][ T6556] bridge0: port 2(bridge_slave_1) entered disabled state [ 1058.091846][ T6556] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1058.104980][ T6563] 8021q: adding VLAN 0 to HW filter on device team0 [ 1058.117817][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1058.127104][ T6883] bridge0: port 1(bridge_slave_0) entered blocking state [ 1058.134163][ T6883] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1058.147019][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1058.155539][ T6883] bridge0: port 2(bridge_slave_1) entered blocking state [ 1058.162643][ T6883] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1058.187598][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1058.196741][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1058.205114][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1058.215603][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1058.228484][ T6884] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1058.239381][ T6563] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1058.257818][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1058.265213][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1058.280641][ T6563] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1058.298540][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1058.318662][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1058.328553][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1058.336171][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1058.345695][ T6563] device veth0_vlan entered promiscuous mode [ 1058.359038][ T6563] device veth1_vlan entered promiscuous mode [ 1058.381001][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1058.389567][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1058.398497][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1058.411533][ T6563] device veth0_macvtap entered promiscuous mode [ 1058.421269][ T6563] device veth1_macvtap entered promiscuous mode [ 1058.439678][ T6563] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1058.447744][ T6884] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1058.458278][ T6884] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1058.469795][ T6563] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1058.478082][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1058.487873][ T6883] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1058.500778][ T6563] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1058.512507][ T6563] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1058.521842][ T6563] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1058.531616][ T6563] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1058.612077][ T6502] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1058.637595][ T6502] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1058.676909][ T6886] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1058.688666][ T6502] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1058.702009][ T6502] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 1058.731640][ T6886] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 1059.539401][ C1] ------------[ cut here ]------------ [ 1059.545151][ C1] Illegal XDP return value 16128, expect packet loss! [ 1059.552867][ C1] WARNING: CPU: 1 PID: 6884 at net/core/filter.c:8177 bpf_warn_invalid_xdp_action+0x6f/0x80 [ 1059.563162][ C1] Modules linked in: [ 1059.567212][ C1] CPU: 1 PID: 6884 Comm: kworker/1:1 Not tainted 5.15.0-rc6-syzkaller #0 [ 1059.575707][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1059.585818][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 1059.591951][ C1] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 [ 1059.598451][ C1] Code: c0 c5 8c 8a 41 83 fc 04 48 c7 c6 00 c6 8c 8a 48 0f 46 ee e8 43 55 4d fa 44 89 e2 48 c7 c7 40 c6 8c 8a 48 89 ee e8 ad 29 ca 01 <0f> 0b 5b 5d 41 5c e9 26 55 4d fa 66 0f 1f 44 00 00 41 57 41 56 49 [ 1059.618168][ C1] RSP: 0018:ffffc90000dc09b0 EFLAGS: 00010286 [ 1059.624249][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1059.632318][ C1] RDX: ffff888077bf8000 RSI: ffffffff815e8da8 RDI: fffff520001b8128 [ 1059.640389][ C1] RBP: ffffffff8a8cc5c0 R08: 0000000000000000 R09: 0000000000000000 [ 1059.648500][ C1] R10: ffffffff815e2b4e R11: 0000000000000000 R12: 0000000000003f00 [ 1059.656566][ C1] R13: ffffc90000dc0a48 R14: 0000000000003f00 R15: ffff8880711365b6 [ 1059.664557][ C1] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 1059.673604][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1059.680353][ C1] CR2: 00007ffce07bc960 CR3: 0000000070731000 CR4: 00000000003506e0 [ 1059.688411][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1059.696817][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1059.704812][ C1] Call Trace: [ 1059.708149][ C1] [ 1059.711003][ C1] veth_xdp_rcv_skb+0x691/0x1ba0 [ 1059.716082][ C1] ? veth_xdp_rcv_one+0xee0/0xee0 [ 1059.721140][ C1] ? kmem_cache_free+0x95/0x4e0 [ 1059.726192][ C1] ? stack_trace_save+0x8c/0xc0 [ 1059.731145][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 1059.737025][ C1] veth_xdp_rcv+0x3ac/0x810 [ 1059.741558][ C1] ? veth_xdp_rcv_skb+0x1ba0/0x1ba0 [ 1059.746847][ C1] ? irq_exit_rcu+0x5/0x20 [ 1059.751344][ C1] ? sysvec_apic_timer_interrupt+0x93/0xc0 [ 1059.757362][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 1059.763862][ C1] ? mark_lock+0xef/0x17b0 [ 1059.768451][ C1] ? secondary_startup_64_no_verify+0xb0/0xbb [ 1059.774554][ C1] ? find_held_lock+0x2d/0x110 [ 1059.779411][ C1] ? lock_chain_count+0x20/0x20 [ 1059.784291][ C1] ? debug_check_no_obj_freed+0x20c/0x420 [ 1059.790169][ C1] veth_poll+0x134/0x850 [ 1059.794441][ C1] ? veth_xdp_rcv+0x810/0x810 [ 1059.799340][ C1] ? lock_chain_count+0x20/0x20 [ 1059.804211][ C1] ? __lock_acquire+0x162f/0x54a0 [ 1059.809365][ C1] __napi_poll+0xaf/0x440 [ 1059.813920][ C1] net_rx_action+0x801/0xb40 [ 1059.818736][ C1] ? napi_threaded_poll+0x520/0x520 [ 1059.823966][ C1] __do_softirq+0x29b/0x9c2 [ 1059.828612][ C1] do_softirq.part.0+0xde/0x130 [ 1059.833614][ C1] [ 1059.836673][ C1] ? ip6_finish_output2+0x737/0x1500 [ 1059.842091][ C1] __local_bh_enable_ip+0x102/0x120 [ 1059.847366][ C1] ip6_finish_output2+0x765/0x1500 [ 1059.852615][ C1] __ip6_finish_output+0x4c1/0x1050 [ 1059.857893][ C1] ? in6_dev_get+0x2c0/0x2c0 [ 1059.862581][ C1] ip6_finish_output+0x32/0x200 [ 1059.867504][ C1] ip6_output+0x1e4/0x530 [ 1059.871849][ C1] mld_sendpack+0x9a1/0xe40 [ 1059.876426][ C1] ? igmp6_mcf_seq_next+0x550/0x550 [ 1059.881651][ C1] mld_send_initial_cr.part.0+0x194/0x230 [ 1059.887443][ C1] ipv6_mc_dad_complete+0x1d0/0x690 [ 1059.892744][ C1] addrconf_dad_completed+0xa20/0xd60 [ 1059.898190][ C1] ? addrconf_rs_timer+0x820/0x820 [ 1059.903326][ C1] ? __local_bh_enable_ip+0xa0/0x120 [ 1059.908690][ C1] addrconf_dad_work+0x79f/0x1340 [ 1059.913758][ C1] ? addrconf_dad_completed+0xd60/0xd60 [ 1059.919419][ C1] process_one_work+0x9bf/0x16b0 [ 1059.924488][ C1] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 1059.929961][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 1059.934948][ C1] ? _raw_spin_lock_irq+0x41/0x50 [ 1059.940067][ C1] worker_thread+0x658/0x11f0 [ 1059.944765][ C1] ? process_one_work+0x16b0/0x16b0 [ 1059.950041][ C1] kthread+0x3e5/0x4d0 [ 1059.954187][ C1] ? set_kthread_struct+0x130/0x130 [ 1059.959452][ C1] ret_from_fork+0x1f/0x30 [ 1059.963901][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 1059.970466][ C1] CPU: 1 PID: 6884 Comm: kworker/1:1 Not tainted 5.15.0-rc6-syzkaller #0 [ 1059.978863][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1059.988903][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 1059.994908][ C1] Call Trace: [ 1059.998183][ C1] [ 1060.001025][ C1] dump_stack_lvl+0xcd/0x134 [ 1060.005668][ C1] panic+0x2b0/0x6dd [ 1060.009570][ C1] ? __warn_printk+0xf3/0xf3 [ 1060.014155][ C1] ? __warn.cold+0x1a/0x44 [ 1060.018556][ C1] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 1060.024348][ C1] __warn.cold+0x35/0x44 [ 1060.028593][ C1] ? wake_up_klogd.part.0+0x8e/0xd0 [ 1060.033822][ C1] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 1060.039626][ C1] report_bug+0x1bd/0x210 [ 1060.044003][ C1] handle_bug+0x3c/0x60 [ 1060.048158][ C1] exc_invalid_op+0x14/0x40 [ 1060.052663][ C1] asm_exc_invalid_op+0x12/0x20 [ 1060.057504][ C1] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 [ 1060.063904][ C1] Code: c0 c5 8c 8a 41 83 fc 04 48 c7 c6 00 c6 8c 8a 48 0f 46 ee e8 43 55 4d fa 44 89 e2 48 c7 c7 40 c6 8c 8a 48 89 ee e8 ad 29 ca 01 <0f> 0b 5b 5d 41 5c e9 26 55 4d fa 66 0f 1f 44 00 00 41 57 41 56 49 [ 1060.083539][ C1] RSP: 0018:ffffc90000dc09b0 EFLAGS: 00010286 [ 1060.089592][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1060.097550][ C1] RDX: ffff888077bf8000 RSI: ffffffff815e8da8 RDI: fffff520001b8128 [ 1060.105515][ C1] RBP: ffffffff8a8cc5c0 R08: 0000000000000000 R09: 0000000000000000 [ 1060.113469][ C1] R10: ffffffff815e2b4e R11: 0000000000000000 R12: 0000000000003f00 [ 1060.121423][ C1] R13: ffffc90000dc0a48 R14: 0000000000003f00 R15: ffff8880711365b6 [ 1060.129388][ C1] ? wake_up_klogd.part.0+0x8e/0xd0 [ 1060.134664][ C1] ? vprintk+0x88/0x90 [ 1060.138722][ C1] veth_xdp_rcv_skb+0x691/0x1ba0 [ 1060.143666][ C1] ? veth_xdp_rcv_one+0xee0/0xee0 [ 1060.148686][ C1] ? kmem_cache_free+0x95/0x4e0 [ 1060.153529][ C1] ? stack_trace_save+0x8c/0xc0 [ 1060.158366][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 1060.164176][ C1] veth_xdp_rcv+0x3ac/0x810 [ 1060.168673][ C1] ? veth_xdp_rcv_skb+0x1ba0/0x1ba0 [ 1060.173857][ C1] ? irq_exit_rcu+0x5/0x20 [ 1060.178260][ C1] ? sysvec_apic_timer_interrupt+0x93/0xc0 [ 1060.184137][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 1060.190283][ C1] ? mark_lock+0xef/0x17b0 [ 1060.194714][ C1] ? secondary_startup_64_no_verify+0xb0/0xbb [ 1060.200772][ C1] ? find_held_lock+0x2d/0x110 [ 1060.205541][ C1] ? lock_chain_count+0x20/0x20 [ 1060.210397][ C1] ? debug_check_no_obj_freed+0x20c/0x420 [ 1060.216108][ C1] veth_poll+0x134/0x850 [ 1060.220348][ C1] ? veth_xdp_rcv+0x810/0x810 [ 1060.225109][ C1] ? lock_chain_count+0x20/0x20 [ 1060.229971][ C1] ? __lock_acquire+0x162f/0x54a0 [ 1060.235103][ C1] __napi_poll+0xaf/0x440 [ 1060.239422][ C1] net_rx_action+0x801/0xb40 [ 1060.244016][ C1] ? napi_threaded_poll+0x520/0x520 [ 1060.249386][ C1] __do_softirq+0x29b/0x9c2 [ 1060.253903][ C1] do_softirq.part.0+0xde/0x130 [ 1060.258834][ C1] [ 1060.261767][ C1] ? ip6_finish_output2+0x737/0x1500 [ 1060.267039][ C1] __local_bh_enable_ip+0x102/0x120 [ 1060.272230][ C1] ip6_finish_output2+0x765/0x1500 [ 1060.277344][ C1] __ip6_finish_output+0x4c1/0x1050 [ 1060.282529][ C1] ? in6_dev_get+0x2c0/0x2c0 [ 1060.287110][ C1] ip6_finish_output+0x32/0x200 [ 1060.291949][ C1] ip6_output+0x1e4/0x530 [ 1060.296276][ C1] mld_sendpack+0x9a1/0xe40 [ 1060.300789][ C1] ? igmp6_mcf_seq_next+0x550/0x550 [ 1060.305985][ C1] mld_send_initial_cr.part.0+0x194/0x230 [ 1060.311693][ C1] ipv6_mc_dad_complete+0x1d0/0x690 [ 1060.316897][ C1] addrconf_dad_completed+0xa20/0xd60 [ 1060.322297][ C1] ? addrconf_rs_timer+0x820/0x820 [ 1060.327403][ C1] ? __local_bh_enable_ip+0xa0/0x120 [ 1060.332684][ C1] addrconf_dad_work+0x79f/0x1340 [ 1060.337738][ C1] ? addrconf_dad_completed+0xd60/0xd60 [ 1060.343278][ C1] process_one_work+0x9bf/0x16b0 [ 1060.348217][ C1] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 1060.353589][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 1060.358531][ C1] ? _raw_spin_lock_irq+0x41/0x50 [ 1060.363561][ C1] worker_thread+0x658/0x11f0 [ 1060.368251][ C1] ? process_one_work+0x16b0/0x16b0 [ 1060.373438][ C1] kthread+0x3e5/0x4d0 [ 1060.377492][ C1] ? set_kthread_struct+0x130/0x130 [ 1060.382705][ C1] ret_from_fork+0x1f/0x30 [ 1060.387477][ C1] Kernel Offset: disabled [ 1060.391879][ C1] Rebooting in 86400 seconds..