rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=40b/1/0x4000000000000000 softirq=51146/51146 fqs=5161 
	(t=10500 jiffies g=91549 q=2060)
NMI backtrace for cpu 0
CPU: 0 PID: 22092 Comm: vhost-22091 Not tainted 5.15.0-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+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:iotlb_access_ok+0x264/0x3e0 drivers/vhost/vhost.c:1347
Code: 0f 8e 18 01 00 00 44 8b 73 48 31 ff 44 8b 7c 24 38 45 21 f7 44 89 fe e8 8a eb b2 fa 45 85 ff 0f 84 ea 00 00 00 e8 3c e4 b2 fa <48> 8d 7b 38 48 ba 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 80
RSP: 0018:ffffc9000c0f7b28 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff88804bf2ba80 RCX: ffffc9001649a000
RDX: 0000000000040000 RSI: ffffffff86c48334 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffc9000c0f7b1f
R10: ffffffff86c48326 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000001
 vq_meta_prefetch+0xbc/0x280 drivers/vhost/vhost.c:1366
 handle_rx+0x145/0x1b40 drivers/vhost/net.c:1140
 vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:372
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
   0:	0f 8e 18 01 00 00    	jle    0x11e
   6:	44 8b 73 48          	mov    0x48(%rbx),%r14d
   a:	31 ff                	xor    %edi,%edi
   c:	44 8b 7c 24 38       	mov    0x38(%rsp),%r15d
  11:	45 21 f7             	and    %r14d,%r15d
  14:	44 89 fe             	mov    %r15d,%esi
  17:	e8 8a eb b2 fa       	callq  0xfab2eba6
  1c:	45 85 ff             	test   %r15d,%r15d
  1f:	0f 84 ea 00 00 00    	je     0x10f
  25:	e8 3c e4 b2 fa       	callq  0xfab2e466
* 2a:	48 8d 7b 38          	lea    0x38(%rbx),%rdi <-- trapping instruction
  2e:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  35:	fc ff df
  38:	48 89 f8             	mov    %rdi,%rax
  3b:	48 c1 e8 03          	shr    $0x3,%rax
  3f:	80                   	.byte 0x80