IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready A link change request failed with some changes committed already. Interface syz_tun may have been left with an inconsistent configuration, please check. Illegal XDP return value 4294967274, expect packet loss! ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10000 at net/core/filter.c:3647 bpf_warn_invalid_xdp_action net/core/filter.c:3647 [inline] WARNING: CPU: 1 PID: 10000 at net/core/filter.c:3647 bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3643 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 10000 Comm: syz-executor.4 Not tainted 4.14.262-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:3647 [inline] RIP: 0010:bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3643 RSP: 0018:ffff8880ba5074f0 EFLAGS: 00010282 RAX: 0000000000000038 RBX: 1ffff110174a0ea7 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff878bbcc0 RDI: ffffed10174a0e94 RBP: ffffffff88564900 R08: 0000000000000038 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea R13: ffffc9000be1d000 R14: 0000000000000000 R15: ffff8880934ab746 netif_receive_generic_xdp+0x554/0x950 net/core/dev.c:3956 do_xdp_generic.part.0+0x22/0xc0 net/core/dev.c:4001 do_xdp_generic net/core/dev.c:4039 [inline] netif_rx_internal+0x219/0x800 net/core/dev.c:4039 dev_forward_skb+0x39/0x50 net/core/dev.c:1866 veth_xmit+0xf1/0x300 drivers/net/veth.c:114 __netdev_start_xmit include/linux/netdevice.h:4051 [inline] netdev_start_xmit include/linux/netdevice.h:4060 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 neigh_resolve_output+0x4e5/0x870 net/core/neighbour.c:1369 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120 ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209 dst_output include/net/dst.h:470 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] mld_sendpack+0x5fe/0xea0 net/ipv6/mcast.c:1657 mld_send_cr net/ipv6/mcast.c:1953 [inline] mld_ifc_timer_expire+0x57c/0xcd0 net/ipv6/mcast.c:2452 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192 RSP: 0018:ffff88809dec6fd0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1279 RBX: 0000000000000286 RCX: 1ffff110136c1175 RDX: dffffc0000000000 RSI: ffff88809b608b88 RDI: 0000000000000286 RBP: ffffffff89d19ce0 R08: ffffffff89d19d00 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff11013bd8dff spin_unlock_irqrestore include/linux/spinlock.h:372 [inline] __wake_up_common_lock+0xcd/0x140 kernel/sched/wait.c:127 netlink_unlock_table net/netlink/af_netlink.c:445 [inline] netlink_broadcast_filtered+0x680/0x9e0 net/netlink/af_netlink.c:1498 netlink_broadcast net/netlink/af_netlink.c:1518 [inline] nlmsg_multicast include/net/netlink.h:591 [inline] nlmsg_notify+0x129/0x1b0 net/netlink/af_netlink.c:2489 rtnl_notify net/core/rtnetlink.c:653 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:2931 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:2945 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:2934 [inline] rtmsg_ifinfo+0xd4/0x100 net/core/rtnetlink.c:2951 netdev_state_change net/core/dev.c:1316 [inline] netdev_state_change+0xde/0xf0 net/core/dev.c:1308 do_setlink+0x2508/0x2bf0 net/core/rtnetlink.c:2280 rtnl_group_changelink net/core/rtnetlink.c:2512 [inline] rtnl_newlink+0xccc/0x1860 net/core/rtnetlink.c:2666 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4320 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2446 netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f2cc3e8efe9 RSP: 002b:00007f2cc27e3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2cc3fa2030 RCX: 00007f2cc3e8efe9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007f2cc3ee908d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdee4bae7f R14: 00007f2cc27e3300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..