rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=8a0c/1/0x4000000000000000 softirq=662138/662140 fqs=20983
rcu: 	(detected by 1, t=105004 jiffies, g=762133, q=72930 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 54837 Comm: syz-executor.6 Not tainted 6.17.0-rc4-next-20250903 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:native_apic_msr_eoi+0xf/0x20
Code: 01 00 00 00 e9 e2 cc 8a 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> bc cc 8a 03 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0000:ffff88806ce08fd0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880e55d7000 RCX: 000000000000080b
RDX: 0000000000000000 RSI: ffffffff8134bc81 RDI: 0000000000000001
RBP: ffff8880189d7e88 R08: 0000000000000001 R09: ffffed100d9c4751
R10: 0000000000000000 R11: ffff88806ce08ff8 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f21fb887700(0000) GS:ffff8880e55d7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f21fe41a9d4 CR3: 0000000047e81000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 kvm_guest_apic_eoi_write+0x46/0x50
 __sysvec_irq_work+0xf/0x370
 sysvec_irq_work+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:irqentry_exit_to_user_mode+0xe7/0x1c0
Code: 83 e3 02 75 49 9c 58 fa f6 c4 02 0f 85 a5 00 00 00 48 8b 5d 00 f7 c3 1e 30 02 00 0f 84 5f ff ff ff e8 1d 4b c0 fc fb f6 c3 18 <75> c2 f6 c7 10 74 c7 4c 89 e7 e8 6a bd cf fc f7 c3 04 00 02 00 74
RSP: 0000:ffff8880189d7f38 EFLAGS: 00000202
RAX: 000000000000018f RBX: 0000000000000008 RCX: ffffffff817c3af6
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84bbf0c3
RBP: ffff88804e841b80 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8643b457 R11: 0000000000000001 R12: ffff8880189d7f58
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0033:0x7f21fe311b19
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:00007f21fb887188 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f21fe424f60 RCX: 00007f21fe311b19
RDX: 0000000000042400 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00007f21fe36bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdbf53c02f R14: 00007f21fb887300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	e9 e2 cc 8a 03       	jmpq   0x38acceb
   9:	66 90                	xchg   %ax,%ax
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
* 2a:	e9 bc cc 8a 03       	jmpq   0x38acceb <-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop