netlink: 112 bytes leftover after parsing attributes in process `syz-executor.3'. Illegal XDP return value 4294967274, expect packet loss! ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9547 at net/core/filter.c:3647 bpf_warn_invalid_xdp_action net/core/filter.c:3647 [inline] WARNING: CPU: 1 PID: 9547 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: 9547 Comm: syz-executor.0 Not tainted 4.14.247-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:ffff8880ba507578 EFLAGS: 00010282 RAX: 0000000000000038 RBX: 1ffff110174a0eb8 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff878bbc40 RDI: ffffed10174a0ea5 RBP: ffffffff88564100 R08: 0000000000000038 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea R13: ffffc90012aa8000 R14: 0000000000000000 R15: ffff88809641b746 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_hh_output include/net/neighbour.h:490 [inline] neigh_output include/net/neighbour.h:498 [inline] ip6_finish_output2+0xc6a/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_save_flags arch/x86/include/asm/paravirt.h:774 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:796 [inline] RIP: 0010:lock_acquire+0x90/0x3f0 kernel/locking/lockdep.c:3993 RSP: 0018:ffff88804cdbf6c0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1270 RBX: ffff88804cdb0540 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88804cdb0dc4 RBP: ffffffff88f778c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88804cdb0540 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:629 [inline] lock_page_memcg+0x36/0x200 mm/memcontrol.c:1640 page_remove_file_rmap+0x2d/0x690 mm/rmap.c:1208 page_remove_rmap+0x96/0xe0 mm/rmap.c:1293 zap_pte_range mm/memory.c:1354 [inline] zap_pmd_range mm/memory.c:1456 [inline] zap_pud_range mm/memory.c:1485 [inline] zap_p4d_range mm/memory.c:1506 [inline] unmap_page_range+0xf3f/0x1ce0 mm/memory.c:1527 unmap_single_vma+0x147/0x2b0 mm/memory.c:1572 unmap_vmas+0x9d/0x160 mm/memory.c:1602 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:931 [inline] mmput kernel/fork.c:952 [inline] mmput+0xfa/0x420 kernel/fork.c:947 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2423 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f47f6899709 RSP: 002b:00007f47f3e10218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007f47f699df68 RCX: 00007f47f6899709 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f47f699df6c RBP: 00007f47f699df60 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007f47f699df6c R13: 00007ffedeb18e7f R14: 00007f47f3e10300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..