rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=1dd/1/0x4000000000000000 softirq=161686/161687 fqs=18 
	(t=10500 jiffies g=278873 q=389)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10455 jiffies! g278873 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=122574
rcu: rcu_preempt kthread starved for 10456 jiffies! g278873 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I 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: 7060 Comm: syz-executor.0 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196
Code: 00 00 0f 1f 40 00 be 0d 00 00 00 48 c7 c7 00 93 95 8c e8 2f 61 4b 00 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0c 25 c0 ef 01 00 65 8b 15 14 66 7e 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc90000dc0838 EFLAGS: 00000046
RAX: ffffffff81567905 RBX: 0000000000000203 RCX: ffff888079193900
RDX: ffff888079193900 RSI: 0000000000000004 RDI: ffffffff8c91c8c0
RBP: ffff888042abbd68 R08: dffffc0000000000 R09: ffffed10173a64a2
R10: ffffed10173a64a2 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880123d5d80 R14: ffff8880695c8840 R15: ffff888042abbc80
FS:  00007f15ca903700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007c06c000 CR4: 00000000003526e0
Call Trace:
 <IRQ>
 rcu_lock_release+0x5/0x20 include/linux/rcupdate.h:271
 rcu_read_unlock include/linux/rcupdate.h:720 [inline]
 __task_pid_nr_ns+0x32a/0x3c0 kernel/pid.c:501
 perf_event_pid_type kernel/events/core.c:1409 [inline]
 perf_event_pid kernel/events/core.c:1418 [inline]
 __perf_event_header__init_id+0x122/0x500 kernel/events/core.c:6808
 perf_prepare_sample+0x10b/0x1770 kernel/events/core.c:7309
 __perf_event_output kernel/events/core.c:7487 [inline]
 perf_event_output_forward+0x176/0x2c0 kernel/events/core.c:7507
 __perf_event_overflow+0x1f8/0x380 kernel/events/core.c:9177
 perf_swevent_hrtimer+0x3d1/0x530 kernel/events/core.c:10567
 __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+0x66e7/0x96b0 arch/x86/kvm/x86.c:9717
Code: 8b 6c 24 38 49 be 00 00 00 00 00 00 00 80 74 08 48 89 df e8 bb 25 bd 00 4c 89 33 4c 8b 3c 24 e8 9f 34 78 00 fb bf 01 00 00 00 <e8> f4 86 47 00 65 8b 1d 05 1e f0 7e 31 ff 89 de e8 e4 bb 71 00 85
RSP: 0018:ffffc9000342f480 EFLAGS: 00000282
RAX: dd64d0b68ed81600 RBX: ffff88804bad82c8 RCX: ffffffff81659711
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc9000342fb88 R08: dffffc0000000000 R09: fffffbfff1fa3802
R10: fffffbfff1fa3802 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000685eb4 R14: 0000000000000246 R15: ffff88804bad8000
 vcpu_run+0x4d3/0xe50 arch/x86/kvm/x86.c:9802
 kvm_arch_vcpu_ioctl_run+0x5c0/0xdb0 arch/x86/kvm/x86.c:10034
 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: 0033:0x7f15cd38da39
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:00007f15ca903188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f15cd490f60 RCX: 00007f15cd38da39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f15cd3e7c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb5c1fa2f R14: 00007f15ca903300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 7043 Comm: syz-executor.1 Not tainted 5.15.0-rc5-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_dump_cpu_stacks+0x22d/0x390 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:3880 [inline]
 rcu_sched_clock_irq+0x1e33/0x2bc0 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+0x653f/0x96b0 arch/x86/kvm/x86.c:9695
Code: 00 4c 89 ff e8 62 6b 12 00 48 c7 c7 00 7a 43 8a e8 16 9b e8 08 65 4c 89 3d d6 10 f0 7e e8 49 36 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 bb 26 bd 00
RSP: 0018:ffffc90003397480 EFLAGS: 00000282
RAX: 05578c7d909da700 RBX: ffff88804b1aa0e0 RCX: ffffffff81659711
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003397b88 R08: dffffc0000000000 R09: fffffbfff1fa3802
R10: fffffbfff1fa3802 R11: 0000000000000000 R12: dffffc0000000000
R13: 00000035e2dc8574 R14: ffffc900033975c0 R15: ffff88804b1a8000
 vcpu_run+0x4d3/0xe50 arch/x86/kvm/x86.c:9802
 kvm_arch_vcpu_ioctl_run+0x5c0/0xdb0 arch/x86/kvm/x86.c:10034
 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: 0033:0x7f13bf3cea39
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:00007f13bc944188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f13bf4d1f60 RCX: 00007f13bf3cea39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f13bf428c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6bde736f R14: 00007f13bc944300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	0f 1f 40 00          	nopl   0x0(%rax)
   6:	be 0d 00 00 00       	mov    $0xd,%esi
   b:	48 c7 c7 00 93 95 8c 	mov    $0xffffffff8c959300,%rdi
  12:	e8 2f 61 4b 00       	callq  0x4b6146
  17:	c3                   	retq
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	cc                   	int3
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	cc                   	int3
  21:	cc                   	int3
  22:	cc                   	int3
  23:	cc                   	int3
  24:	cc                   	int3
  25:	cc                   	int3
  26:	48 8b 04 24          	mov    (%rsp),%rax
* 2a:	65 48 8b 0c 25 c0 ef 	mov    %gs:0x1efc0,%rcx <-- trapping instruction
  31:	01 00
  33:	65 8b 15 14 66 7e 7e 	mov    %gs:0x7e7e6614(%rip),%edx        # 0x7e7e664e
  3a:	f7 c2 00 01 ff 00    	test   $0xff0100,%edx