------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/rcu/tree_stall.h:639 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:639 [inline]
WARNING: CPU: 0 PID: 0 at kernel/rcu/tree_stall.h:639 rcu_check_gp_start_stall.isra.0.cold+0xc/0x38 kernel/rcu/tree_stall.h:596
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:rcu_check_gp_start_stall kernel/rcu/tree_stall.h:639 [inline]
RIP: 0010:rcu_check_gp_start_stall.isra.0.cold+0xc/0x38 kernel/rcu/tree_stall.h:596
Code: 6c 92 fb ff 0f 0b e9 99 0b ff ff 48 c7 c7 00 22 8d 87 e8 59 92 fb ff 0f 0b e9 71 0c ff ff 48 c7 c7 00 22 8d 87 e8 46 92 fb ff <0f> 0b 49 81 fc 40 ec da 88 74 0c 48 c7 c7 40 ec da 88 e8 8b 9e dd
RSP: 0018:ffff8880ae809dc8 EFLAGS: 00010082
RAX: 0000000000000024 RBX: 000000010001e302 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c2696 RDI: ffffed1015d013ab
RBP: ffff8880ae809de8 R08: 0000000000000024 R09: ffffed1015d060d1
R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffffffff88daec40
R13: 1ffffffff1181200 R14: 0000000000000286 R15: 0000000000000009
 rcu_core+0x431/0x1580 kernel/rcu/tree.c:2309
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2323
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:537 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1133
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 38 73 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 1b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 1b 4a 00 fb f4 <c3> 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ee 32 22 fa e8 39
RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
 default_idle_call+0x84/0xb0 kernel/sched/idle.c:94
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x413/0x760 kernel/sched/idle.c:263
 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354
 rest_init+0x245/0x37b init/main.c:451
 arch_call_rest_init+0xe/0x1b
 start_kernel+0x912/0x951 init/main.c:785
 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472
 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:453
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Kernel Offset: disabled
Rebooting in 86400 seconds..