------------[ cut here ]------------
WARNING: CPU: 1 PID: 12218 at kernel/rcu/tree_stall.h:1015 rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1015
Modules linked in:
CPU: 1 UID: 0 PID: 12218 Comm: syz-executor Not tainted 6.16.0-rc1-syzkaller-gad9ef7f687ce #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1015
Code: ff ff 48 c7 c7 40 64 ac 99 be 04 00 00 00 e8 93 1f 7c 00 4c 89 f7 b8 01 00 00 00 87 05 75 ad 04 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 00 41 14 8e 74 47 48 c7 c0 30 3a a1 8f 48 c1 e8
RSP: 0018:ffffc90000a08bb8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000a02 RCX: ffffffff81a7b6bd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e144100
RBP: ffffc90000a08e30 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff3358c88 R12: 0000000000002904
R13: 1ffff110170e7922 R14: ffffffff8e144100 R15: dffffc0000000000
FS:  000055557126f500(0000) GS:ffff888125d52000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdb0df8ef98 CR3: 000000005d918000 CR4: 00000000003526f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x5f7/0x1710 kernel/rcu/tree.c:2827
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x70 kernel/kcov.c:213
Code: 00 00 00 48 8b 3d f4 17 fa 0b 48 89 de 5b e9 f3 b0 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 8b 04 24 65 48 8b 0c 25 08 e0 9c 92 65 8b 15 d8 83 dc 10 81 e2
RSP: 0018:ffffc900037979d8 EFLAGS: 00000a02
RAX: f2f2f200f1f1f1f1 RBX: ffff888078939e00 RCX: 1ffff920006f2f58
RDX: ffff888078939e00 RSI: 0000000000000000 RDI: ffffc90003797c80
RBP: ffffc90003797b68 R08: ffffffff8de0c043 R09: 1ffffffff1bc1808
R10: dffffc0000000000 R11: fffffbfff1bc1809 R12: ffffc90003797c80
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006f2f90
 wait_consider_task+0x98/0x2e60 kernel/exit.c:1441
 do_wait_thread kernel/exit.c:1556 [inline]
 __do_wait+0x153/0x740 kernel/exit.c:1674
 do_wait+0x1f8/0x520 kernel/exit.c:1708
 kernel_wait4+0x1af/0x280 kernel/exit.c:1867
 __do_sys_wait4 kernel/exit.c:1895 [inline]
 __se_sys_wait4 kernel/exit.c:1891 [inline]
 __x64_sys_wait4+0x133/0x1e0 kernel/exit.c:1891
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ff1784b97
Code: 89 7c 24 10 48 89 4c 24 18 e8 45 1b 03 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 95 1b 03 00 8b 44
RSP: 002b:00007fffc5941170 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 000000000000006b RCX: 00007f5ff1784b97
RDX: 0000000040000001 RSI: 00007fffc59411dc RDI: 00000000ffffffff
RBP: 00007fffc59411dc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000001388
R13: 00000000000927c0 R14: 000000000008ca64 R15: 00007fffc5941230
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 48 8b             	add    %cl,-0x75(%rax)
   5:	3d f4 17 fa 0b       	cmp    $0xbfa17f4,%eax
   a:	48 89 de             	mov    %rbx,%rsi
   d:	5b                   	pop    %rbx
   e:	e9 f3 b0 58 00       	jmp    0x58b106
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	f3 0f 1e fa          	endbr64
* 2a:	48 8b 04 24          	mov    (%rsp),%rax <-- trapping instruction
  2e:	65 48 8b 0c 25 08 e0 	mov    %gs:0xffffffff929ce008,%rcx
  35:	9c 92
  37:	65 8b 15 d8 83 dc 10 	mov    %gs:0x10dc83d8(%rip),%edx        # 0x10dc8416
  3e:	81                   	.byte 0x81
  3f:	e2                   	.byte 0xe2