rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=8954/1/0x4000000000000000 softirq=601785/601786 fqs=20998
rcu: 	(detected by 1, t=105006 jiffies, g=764945, q=5356 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 17574 Comm: syz-executor.4 Not tainted 6.16.0-rc5-next-20250710 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:irqentry_exit_to_user_mode+0xe7/0x1b0
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 bd 1f c3 fc fb f6 c3 18 <75> c2 f6 c7 10 74 c7 4c 89 e7 e8 8a 5d d2 fc f7 c3 04 00 02 00 74
RSP: 0000:ffff888040f0ff38 EFLAGS: 00000202
RAX: 00000000000030f5 RBX: 0000000000000008 RCX: ffffffff817b9b16
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84b87c43
RBP: ffff88800afb9b80 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff86439957 R11: 0000000000000001 R12: ffff888040f0ff58
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f96b4793700(0000) GS:ffff8880e55ed000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f96b4771ff8 CR3: 0000000040c0c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0033:0x7f96b723eb19
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:00007f96b4793188 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f96b7352020 RCX: 00007f96b723eb19
RDX: 0000000020000000 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f96b7298f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff54f4b87f R14: 00007f96b4793300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	83 e3 02             	and    $0x2,%ebx
   3:	75 49                	jne    0x4e
   5:	9c                   	pushfq
   6:	58                   	pop    %rax
   7:	fa                   	cli
   8:	f6 c4 02             	test   $0x2,%ah
   b:	0f 85 a5 00 00 00    	jne    0xb6
  11:	48 8b 5d 00          	mov    0x0(%rbp),%rbx
  15:	f7 c3 1e 30 02 00    	test   $0x2301e,%ebx
  1b:	0f 84 5f ff ff ff    	je     0xffffff80
  21:	e8 bd 1f c3 fc       	callq  0xfcc31fe3
  26:	fb                   	sti
  27:	f6 c3 18             	test   $0x18,%bl
* 2a:	75 c2                	jne    0xffffffee <-- trapping instruction
  2c:	f6 c7 10             	test   $0x10,%bh
  2f:	74 c7                	je     0xfffffff8
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 8a 5d d2 fc       	callq  0xfcd25dc3
  39:	f7 c3 04 00 02 00    	test   $0x20004,%ebx
  3f:	74                   	.byte 0x74