------------[ cut here ]------------ kernel BUG at net/ipv4/tcp_output.c:2817! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: 8021q: VLANs not supported on lo (ftrace buffer empty) Modules linked in: CPU: 0 PID: 3164 Comm: kworker/u4:4 Not tainted 4.13.0-rc7+ #35 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound call_usermodehelper_exec_work task: ffff8801ce4ac280 task.stack: ffff8801ce248000 RIP: 0010:__tcp_retransmit_skb+0x1d18/0x1fa0 net/ipv4/tcp_output.c:2817 RSP: 0018:ffff8801db207408 EFLAGS: 00010206 8021q: VLANs not supported on lo RAX: ffff8801ce4ac280 RBX: 0000000000000001 RCX: 000000001a556db7 RDX: 0000000000000100 RSI: ffff8801c1a28780 RDI: ffff8801c1a287ac RBP: ffff8801db2075c8 R08: ffff88021fff901c R09: ffff88021fff9008 R10: 0000000000000000 R11: ffff88021fff901d R12: ffff8801c1a28806 R13: 000000001a557147 R14: ffff8801c1a28780 R15: ffff8801c59f5500 FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000a6fa18 CR3: 0000000005a22000 CR4: 00000000001406f0 Call Trace: tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2891 tcp_retransmit_timer+0xcee/0x2a10 net/ipv4/tcp_timer.c:476 tcp_write_timer_handler+0x335/0x810 net/ipv4/tcp_timer.c:561 tcp_write_timer+0x146/0x160 net/ipv4/tcp_timer.c:579 call_timer_fn+0x233/0x830 kernel/time/timer.c:1281 expire_timers kernel/time/timer.c:1320 [inline] __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646 __do_softirq+0x2f5/0xba3 kernel/softirq.c:284 8021q: VLANs not supported on lo invoke_softirq kernel/softirq.c:364 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:1044 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:702 RIP: 0010:PageCompound include/linux/page-flags.h:160 [inline] RIP: 0010:free_pages_prepare mm/page_alloc.c:1022 [inline] RIP: 0010:__free_pages_ok+0x16eb/0x3150 mm/page_alloc.c:1248 RSP: 0018:ffff8801ce24e418 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 0200000000000000 RBX: ffffea0007314a00 RCX: 0000000000000000 RDX: 1ffffd4000e62940 RSI: ffffffff85b376c0 RDI: 0000000000000286 RBP: ffff8801ce24ec08 R08: 0000000000000000 R09: 0000000000000000 8021q: VLANs not supported on lo R10: 0000000000028c40 R11: 0000000000000000 R12: ffff8801ce24ebe0 R13: 0000000000000003 R14: ffffea0007314a20 R15: 0000000000000000 __free_pages+0xd8/0x150 mm/page_alloc.c:4185 free_thread_stack kernel/fork.c:261 [inline] release_task_stack kernel/fork.c:347 [inline] put_task_stack+0xf2/0x270 kernel/fork.c:358 finish_task_switch+0x4c9/0x740 kernel/sched/core.c:2655 context_switch kernel/sched/core.c:2774 [inline] __schedule+0x8f0/0x2070 kernel/sched/core.c:3332 schedule+0x108/0x440 kernel/sched/core.c:3391 do_wait+0x338/0xa90 kernel/exit.c:1541 kernel_wait4+0x1f5/0x370 kernel/exit.c:1665 SYSC_wait4+0x134/0x140 kernel/exit.c:1677 SyS_wait4+0x2c/0x40 kernel/exit.c:1673 call_usermodehelper_exec_sync kernel/kmod.c:307 [inline] call_usermodehelper_exec_work+0x1a0/0x2c0 kernel/kmod.c:344 process_one_work+0xbf3/0x1bc0 kernel/workqueue.c:2097 worker_thread+0x223/0x1860 kernel/workqueue.c:2231 kthread+0x35e/0x430 kernel/kthread.c:231 8021q: VLANs not supported on lo ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:425 Code: ff e8 6d f9 94 fd e9 4b fb ff ff 48 8b bd a0 fe ff ff e8 bc f9 94 fd e9 fc f8 ff ff e8 b2 f9 94 fd e9 53 f6 ff ff e8 18 08 61 fd <0f> 0b e8 a1 f9 94 fd e9 9e e5 ff ff 4c 89 e7 e8 34 f9 94 fd e9 8021q: VLANs not supported on lo RIP: __tcp_retransmit_skb+0x1d18/0x1fa0 net/ipv4/tcp_output.c:2817 RSP: ffff8801db207408 ---[ end trace e03946abcf79ba15 ]---