[ OK ] Reached target Login Prompts. [ 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 '10.128.0.90' (ECDSA) to the list of known hosts. syzkaller login: [ 46.419521][ T6830] IPVS: ftp: loaded support on port[0] = 21 [ 46.519797][ T6830] chnl_net:caif_netlink_parms(): no params data found [ 46.597810][ T6830] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.605610][ T6830] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.615377][ T6830] device bridge_slave_0 entered promiscuous mode [ 46.624398][ T6830] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.632034][ T6830] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.640123][ T6830] device bridge_slave_1 entered promiscuous mode [ 46.660516][ T6830] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 46.671290][ T6830] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 46.693013][ T6830] team0: Port device team_slave_0 added [ 46.700998][ T6830] team0: Port device team_slave_1 added [ 46.720145][ T6830] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 46.727121][ T6830] 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. [ 46.753278][ T6830] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 46.765838][ T6830] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 46.772953][ T6830] 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. [ 46.799710][ T6830] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 46.826668][ T6830] device hsr_slave_0 entered promiscuous mode [ 46.833572][ T6830] device hsr_slave_1 entered promiscuous mode [ 46.926457][ T6830] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 46.937318][ T6830] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 46.947954][ T6830] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 46.957169][ T6830] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 46.980322][ T6830] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.987436][ T6830] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.995253][ T6830] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.002400][ T6830] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.043980][ T6830] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.057005][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.067499][ T2639] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.076912][ T2639] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.085022][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.097594][ T6830] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.109729][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.119634][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.126677][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.150325][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.160484][ T2466] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.167527][ T2466] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.175981][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.185735][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.201172][ T6830] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 47.212367][ T6830] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 47.225190][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 47.233717][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 47.243289][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.254017][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.272475][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.280054][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.294564][ T6830] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 47.312848][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 47.331632][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 47.340440][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 47.350128][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 47.361727][ T6830] device veth0_vlan entered promiscuous mode [ 47.373606][ T6830] device veth1_vlan entered promiscuous mode [ 47.394267][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 47.403125][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 47.411603][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 47.422416][ T6830] device veth0_macvtap entered promiscuous mode [ 47.433387][ T6830] device veth1_macvtap entered promiscuous mode [ 47.452306][ T6830] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 47.460203][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 47.472223][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 47.484609][ T6830] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 47.493208][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 47.502970][ T2639] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 47.513876][ T6830] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.523071][ T6830] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.532164][ T6830] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.541521][ T6830] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.585562][ T6830] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 47.594900][ T6830] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.602558][ T6830] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.607944][ C0] ------------[ cut here ]------------ [ 47.615404][ C0] Illegal XDP return value 4294967274, expect packet loss! [ 47.622992][ C0] WARNING: CPU: 0 PID: 9 at net/core/filter.c:7195 bpf_warn_invalid_xdp_action+0x55/0x60 [ 47.632845][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 47.639447][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.9.0-rc4-syzkaller #0 [ 47.647511][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.657570][ C0] Call Trace: [ 47.660867][ C0] dump_stack+0x1d6/0x29e [ 47.665213][ C0] panic+0x2c0/0x800 [ 47.669109][ C0] ? __warn+0x102/0x250 [ 47.673260][ C0] ? bpf_warn_invalid_xdp_action+0x55/0x60 [ 47.679048][ C0] ? bpf_warn_invalid_xdp_action+0x55/0x60 [ 47.684883][ C0] __warn+0x227/0x250 [ 47.688861][ C0] ? bpf_warn_invalid_xdp_action+0x55/0x60 [ 47.694700][ C0] report_bug+0x1b1/0x2e0 [ 47.699016][ C0] handle_bug+0x42/0x80 [ 47.703151][ C0] exc_invalid_op+0x16/0x40 [ 47.707642][ C0] asm_exc_invalid_op+0x12/0x20 [ 47.712488][ C0] RIP: 0010:bpf_warn_invalid_xdp_action+0x55/0x60 [ 47.718886][ C0] Code: e8 70 aa f7 fa 83 fb 04 48 c7 c0 35 e4 29 89 48 c7 c6 3d e4 29 89 48 0f 47 f0 48 c7 c7 08 e4 29 89 89 da 31 c0 e8 cb 44 c9 fa <0f> 0b 5b c3 0f 1f 80 00 00 00 00 55 41 57 41 56 41 55 41 54 53 50 [ 47.738476][ C0] RSP: 0018:ffffc90000cff920 EFLAGS: 00010246 [ 47.744528][ C0] RAX: 679b8aae20101d00 RBX: 00000000ffffffea RCX: ffff8880a9a32240 [ 47.752509][ C0] RDX: 0000000000000101 RSI: 0000000000000101 RDI: 0000000000000000 [ 47.760467][ C0] RBP: 00000000ffffffea R08: ffffffff815e27d0 R09: ffffed1015d062c0 [ 47.768437][ C0] R10: ffffed1015d062c0 R11: 0000000000000000 R12: ffff8880a7178970 [ 47.776418][ C0] R13: dffffc0000000000 R14: ffffc90000cffb08 R15: ffff8880a7178910 [ 47.784390][ C0] ? vprintk_emit+0x2f0/0x370 [ 47.789057][ C0] netif_receive_generic_xdp+0xe65/0x12f0 [ 47.794776][ C0] ? rcu_lock_release+0x20/0x20 [ 47.799636][ C0] __netif_receive_skb_core+0x52c/0x36e0 [ 47.805262][ C0] ? rcu_lock_acquire+0x9/0x30 [ 47.810012][ C0] __netif_receive_skb+0xe3/0x3c0 [ 47.815024][ C0] process_backlog+0x578/0xa10 [ 47.819790][ C0] net_rx_action+0x655/0x1200 [ 47.824460][ C0] __do_softirq+0x256/0x6d5 [ 47.828951][ C0] ? run_ksoftirqd+0xa1/0x130 [ 47.833615][ C0] run_ksoftirqd+0xa1/0x130 [ 47.838096][ C0] ? ksoftirqd_should_run+0x20/0x20 [ 47.843268][ C0] smpboot_thread_fn+0x572/0x970 [ 47.848214][ C0] kthread+0x37e/0x3a0 [ 47.852277][ C0] ? cpu_report_death+0x110/0x110 [ 47.857282][ C0] ? kthread_blkcg+0xd0/0xd0 [ 47.861859][ C0] ret_from_fork+0x1f/0x30 [ 47.867512][ C0] Kernel Offset: disabled [ 47.871887][ C0] Rebooting in 86400 seconds..