rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=220073, q=569)
rcu: All QSes seen, last rcu_preempt kthread activity 10492 (4295107154-4295096662), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10493 jiffies! g220073 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:26544 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4940 [inline]
 __schedule+0xb72/0x1460 kernel/sched/core.c:6287
 schedule+0x14b/0x210 kernel/sched/core.c:6366
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
 rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1957
 rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2130
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 21720 Comm: syz-executor.0 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_check_gp_kthread_starvation+0x1ff/0x270 kernel/rcu/tree_stall.h:481
 print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
 rcu_pending kernel/rcu/tree.c:3880 [inline]
 rcu_sched_clock_irq+0x23d5/0x2bc0 kernel/rcu/tree.c:2599
 update_process_times+0x197/0x200 kernel/time/timer.c:1785
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:vcpu_enter_guest+0x67d5/0x9650 arch/x86/kvm/x86.c:9712
Code: 00 4c 89 ff e8 8c 81 12 00 48 c7 c7 00 7a 43 8a e8 70 20 e9 08 65 4c 89 3d 30 06 f0 7e e8 d3 57 78 00 fb 49 8d 9f e0 20 00 00 <48> 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 c5 4b bd 00
RSP: 0018:ffffc90003c37480 EFLAGS: 00000282
RAX: d5ef974f1a84c200 RBX: ffff88808feea0e0 RCX: ffffffff8165c2f1
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003c37b88 R08: dffffc0000000000 R09: fffffbfff1fa39fc
R10: fffffbfff1fa39fc R11: 0000000000000000 R12: dffffc0000000000
R13: 00000035bf2584fe R14: ffffc90003c375c0 R15: ffff88808fee8000
 vcpu_run+0x4d3/0xe50 arch/x86/kvm/x86.c:9819
 kvm_arch_vcpu_ioctl_run+0x5c0/0xdb0 arch/x86/kvm/x86.c:10051
 kvm_vcpu_ioctl+0x894/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3779
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fcd1079aae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcd0dcef188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcd108ae020 RCX: 00007fcd1079aae9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fcd107f4f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6004d23f R14: 00007fcd0dcef300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	00 4c 89 ff          	add    %cl,-0x1(%rcx,%rcx,4)
   4:	e8 8c 81 12 00       	callq  0x128195
   9:	48 c7 c7 00 7a 43 8a 	mov    $0xffffffff8a437a00,%rdi
  10:	e8 70 20 e9 08       	callq  0x8e92085
  15:	65 4c 89 3d 30 06 f0 	mov    %r15,%gs:0x7ef00630(%rip)        # 0x7ef0064d
  1c:	7e
  1d:	e8 d3 57 78 00       	callq  0x7857f5
  22:	fb                   	sti
  23:	49 8d 9f e0 20 00 00 	lea    0x20e0(%r15),%rbx
* 2a:	48 89 d8             	mov    %rbx,%rax <-- trapping instruction
  2d:	48 c1 e8 03          	shr    $0x3,%rax
  31:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  36:	74 08                	je     0x40
  38:	48 89 df             	mov    %rbx,%rdi
  3b:	e8 c5 4b bd 00       	callq  0xbd4c05