rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=189717, q=835)
rcu: All QSes seen, last rcu_preempt kthread activity 10498 (4295069978-4295059480), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10498 jiffies! g189717 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16355 Comm: syz-executor.3 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:234 [inline]
RIP: 0010:pvclock_clocksource_read+0xa0/0x740 arch/x86/kernel/pvclock.c:76
Code: 89 4c 24 20 66 0f 1f 44 00 00 42 0f b6 04 3a 84 c0 0f 85 56 01 00 00 42 0f b6 04 39 84 c0 0f 85 9c 01 00 00 45 8b 28 0f 01 f9 <66> 90 48 89 c5 49 89 d6 49 c1 e6 20 48 8b 44 24 60 42 0f b6 04 38
RSP: 0018:ffffc90000dc0eb0 EFLAGS: 00000046
RAX: 00000000b7b1d844 RBX: 1ffffffff1e95c09 RCX: 0000000000000001
RDX: 00000000000002aa RSI: ffffffff8f4ae058 RDI: ffffffff8f4ae05d
RBP: ffff88807588b900 R08: ffffffff8f4ae040 R09: ffffffff8f4ae048
R10: ffffffff8f4ae05c R11: ffffffff8f4ae050 R12: ffff8880b9d1f750
R13: 000000000000000c R14: dffffc0000000000 R15: dffffc0000000000
FS:  00007f49d8434700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000337e1000 CR4: 00000000003526e0
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x15/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x15/0x3c0 kernel/sched/clock.c:371
 irqtime_account_irq+0x70/0x270 kernel/sched/cputime.c:61
 sysvec_apic_timer_interrupt+0x84/0xb0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:vcpu_enter_guest+0x697d/0x9650 arch/x86/kvm/x86.c:9734
Code: 8b 6c 24 38 49 be 00 00 00 00 00 00 00 80 74 08 48 89 df e8 b5 48 bd 00 4c 89 33 4c 8b 3c 24 e8 19 56 78 00 fb bf 01 00 00 00 <e8> 2e a8 47 00 65 8b 1d 5f 13 f0 7e 31 ff 89 de e8 5e dd 71 00 85
RSP: 0018:ffffc900031f7480 EFLAGS: 00000282
RAX: c1e74cedebea2f00 RBX: ffff888031e502c8 RCX: ffffffff8165c2f1
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900031f7b88 R08: dffffc0000000000 R09: fffffbfff1fa3807
R10: fffffbfff1fa3807 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff9200063eeb4 R14: 0000000000000246 R15: ffff888031e50000
 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: 0033:0x7f49daebea39
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:00007f49d8434188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f49dafc1f60 RCX: 00007f49daebea39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f49daf18e8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc1b94f97f R14: 00007f49d8434300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	89 4c 24 20          	mov    %ecx,0x20(%rsp)
   4:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
   a:	42 0f b6 04 3a       	movzbl (%rdx,%r15,1),%eax
   f:	84 c0                	test   %al,%al
  11:	0f 85 56 01 00 00    	jne    0x16d
  17:	42 0f b6 04 39       	movzbl (%rcx,%r15,1),%eax
  1c:	84 c0                	test   %al,%al
  1e:	0f 85 9c 01 00 00    	jne    0x1c0
  24:	45 8b 28             	mov    (%r8),%r13d
  27:	0f 01 f9             	rdtscp
* 2a:	66 90                	xchg   %ax,%ax <-- trapping instruction
  2c:	48 89 c5             	mov    %rax,%rbp
  2f:	49 89 d6             	mov    %rdx,%r14
  32:	49 c1 e6 20          	shl    $0x20,%r14
  36:	48 8b 44 24 60       	mov    0x60(%rsp),%rax
  3b:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax