------------[ cut here ]------------
WARNING: CPU: 1 PID: 6597 at kernel/rcu/tree_stall.h:989 rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:989
Modules linked in:
CPU: 1 UID: 0 PID: 6597 Comm: syz.2.156 Not tainted 6.13.0-rc3-syzkaller-g06103dccbbd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:989
Code: c7 60 bb 3e 9a be 04 00 00 00 e8 6c 1b 80 00 b8 01 00 00 00 87 05 c1 fc b8 18 85 c0 0f 85 1a ff ff ff 48 c7 c0 80 c8 93 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 10 ad 19 90 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90000a18bb8 EFLAGS: 00010046
RAX: ffffffff8e93c880 RBX: 00000000ffffe197 RCX: ffffffff8185be94
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9a3ebb60
RBP: ffffc90000a18e10 R08: 0000000000000003 R09: fffffbfff347d76c
R10: dffffc0000000000 R11: fffffbfff347d76c R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8e93c880
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555581f4000 CR3: 0000000024350000 CR4: 00000000003526f0
DR0: fffffffffffffff8 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x650/0x17a0 kernel/rcu/tree.c:2818
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:kvm_wait+0x250/0x2c0 arch/x86/kernel/kvm.c:1064
Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 1a 7b 54 00 e8 75 44 5c 00 45 38 f7 75 15 66 90 e8 89 7a 54 00 0f 00 2d 32 17 bd 0a fb f4 <e9> 50 fe ff ff e8 76 7a 54 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38
RSP: 0018:ffffc900038474e0 EFLAGS: 000002d3
RAX: ffffffff814af967 RBX: ffff888148c48080 RCX: ffff888031743c00
RDX: 0000000000000000 RSI: ffffffff8c0a9760 RDI: ffffffff8c5faee0
RBP: ffffc900038475b0 R08: ffffffff942a18bf R09: 1ffffffff2854317
R10: dffffc0000000000 R11: fffffbfff2854318 R12: 1ffff92000708ea0
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003
 pv_wait arch/x86/include/asm/paravirt.h:596 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline]
 __pv_queued_spin_lock_slowpath+0x8d0/0xdb0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 lock_for_kill+0xdc/0x210 fs/dcache.c:675
 dput+0x18a/0x2b0 fs/dcache.c:865
 __fput+0x5ba/0xa50 fs/file_table.c:458
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0xa2f/0x28e0 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3017
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0x7e/0x250 kernel/entry/common.c:231
 exc_general_protection+0x410/0x5d0 arch/x86/kernel/traps.c:693
 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:617
RIP: 0033:0x7f8215985d21
Code: Unable to access opcode bytes at 0x7f8215985cf7.
RSP: 002b:0000000020000400 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f8215b76080 RCX: 00007f8215985d19
RDX: 0000000020000200 RSI: 0000000020000400 RDI: 0000000040000000
RBP: 00007f8215a01a20 R08: 00000000200005c0 R09: 00000000200005c0
R10: 0000000020000440 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8215b76080 R15: 00007fff2cb2fe18
 </TASK>
----------------
Code disassembly (best guess):
   0:	3b 45 0f             	cmp    0xf(%rbp),%eax
   3:	b6 f6                	mov    $0xf6,%dh
   5:	44 89 ff             	mov    %r15d,%edi
   8:	44 89 f6             	mov    %r14d,%esi
   b:	e8 1a 7b 54 00       	call   0x547b2a
  10:	e8 75 44 5c 00       	call   0x5c448a
  15:	45 38 f7             	cmp    %r14b,%r15b
  18:	75 15                	jne    0x2f
  1a:	66 90                	xchg   %ax,%ax
  1c:	e8 89 7a 54 00       	call   0x547aaa
  21:	0f 00 2d 32 17 bd 0a 	verw   0xabd1732(%rip)        # 0xabd175a
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	e9 50 fe ff ff       	jmp    0xfffffe7f <-- trapping instruction
  2f:	e8 76 7a 54 00       	call   0x547aaa
  34:	fb                   	sti
  35:	e9 45 fe ff ff       	jmp    0xfffffe7f
  3a:	89 d9                	mov    %ebx,%ecx
  3c:	80 e1 07             	and    $0x7,%cl
  3f:	38                   	.byte 0x38