RAX: ffffffffffffffda RBX: 00007f2aae9136d4 RCX: 0000000000453e69 RDX: 0000000000000000 RSI: 0000000020000a80 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015 R13: 0000000000000483 R14: 00000000006f6ce8 R15: 0000000000000000 WARNING: CPU: 0 PID: 4083 at net/ipv4/tcp_input.c:1955 tcp_enter_loss+0xd28/0xff0 net/ipv4/tcp_input.c:1955 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 4083 Comm: rsyslogd Not tainted 4.16.0-rc4+ #256 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+0x194/0x24d lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 __warn+0x1dc/0x200 kernel/panic.c:547 report_bug+0x211/0x2d0 lib/bug.c:184 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178 fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986 RIP: 0010:tcp_enter_loss+0xd28/0xff0 net/ipv4/tcp_input.c:1955 RSP: 0000:ffff8801db207360 EFLAGS: 00010206 RAX: ffff8801b6cb2680 RBX: 0000000000000004 RCX: ffffffff84c7abe8 RDX: 0000000000000100 RSI: 0000000000000001 RDI: ffff8801d8352824 RBP: ffff8801db2073e0 R08: ffff88021fff801c R09: ffff88021fff8008 R10: 00000000fc3e77b6 R11: ffff88021fff801d R12: 0000000000000009 R13: ffff8801ab90ecb0 R14: dffffc0000000000 R15: ffff8801d8352000 tcp_retransmit_timer+0xee0/0x2dd0 net/ipv4/tcp_timer.c:485 tcp_write_timer_handler+0x335/0x820 net/ipv4/tcp_timer.c:572 tcp_write_timer+0x153/0x170 net/ipv4/tcp_timer.c:592 call_timer_fn+0x228/0x820 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1666 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:541 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857 RIP: 0033:0x41ca14 RSP: 002b:00007efd33621d60 EFLAGS: 00000207 ORIG_RAX: ffffffffffffff12 RAX: 0000000000000009 RBX: 0000000001f532e0 RCX: 656c6c616b7a7973 RDX: 0000000001f5346d RSI: 0000000001f1d1d9 RDI: 0000000001f53476 RBP: 0000000000000009 R08: 0000000001f1d1d0 R09: 00007efd35a00250 R10: 645f6b636f6c203f R11: 00007efd35a32a50 R12: 0000000001f1d1d0 R13: 0000000000000009 R14: 00000000000006c7 R15: 00007efd34e56da7 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..