------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at net/ipv4/tcp_timer.c:429 tcp_retransmit_timer+0x1ac5/0x2560 net/ipv4/tcp_timer.c:429 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.145 #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+0x138/0x197 lib/dump_stack.c:53 panic+0x1f2/0x426 kernel/panic.c:182 __warn.cold+0x2f/0x36 kernel/panic.c:546 report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:tcp_retransmit_timer+0x1ac5/0x2560 net/ipv4/tcp_timer.c:429 RSP: 0018:ffff8880aee07c88 EFLAGS: 00010206 RAX: ffffffff87676240 RBX: ffff888072b84180 RCX: 0000000000000008 RDX: 0000000000000100 RSI: ffff8880a96cae0c RDI: ffff8880a96cafd8 RBP: ffff8880aee07ce8 R08: 0000007e7a51def1 R09: ffff88821fff8008 R10: ffff88821fff8010 R11: 0000000000000001 R12: ffff8880a96ca600 R13: ffff8880a96cac9a R14: ffff8880a96ca630 R15: 0000000000000000 tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579 tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1634 [inline] __run_timers kernel/time/timer.c:1602 [inline] run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647 __do_softirq+0x244/0x9a0 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffffffff87607de8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff0ee2a84 RBX: ffffffff87676240 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff87676abc RBP: ffffffff87607e10 R08: 1ffffffff104a601 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87715410 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87676240 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:557 default_idle_call+0x36/0x90 kernel/sched/idle.c:98 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x262/0x3d0 kernel/sched/idle.c:246 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:351 rest_init+0x1d9/0x1e2 init/main.c:435 start_kernel+0x6df/0x6fd init/main.c:709 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:381 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:362 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 Kernel Offset: disabled Rebooting in 86400 seconds..