------------[ cut here ]------------
WARNING: CPU: 1 PID: 7141 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: 7141 Comm: syz.0.330 Not tainted 6.15.0-rc3-syzkaller-g5709be4c35ba #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:989
Code: c7 80 b7 77 9a be 04 00 00 00 e8 7c 2f 84 00 b8 01 00 00 00 87 05 01 ef ce 18 85 c0 0f 85 1a ff ff ff 48 c7 c0 c0 2c d4 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 60 14 60 90 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90000a08b98 EFLAGS: 00010046
RAX: ffffffff8ed42cc0 RBX: 00000000ffffeeec RCX: ffffffff81a8c874
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9a77b780
RBP: ffffc90000a08df0 R08: 0000000000000003 R09: fffffbfff34ef6f0
R10: dffffc0000000000 R11: fffffbfff34ef6f0 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8ed42cc0
FS:  0000000000000000(0000) GS:ffff88812509a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91294aff98 CR3: 000000002561c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_core+0x652/0x17a0 kernel/rcu/tree.c:2819
 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 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:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:81
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 53 7e 18 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000ed9f578 EFLAGS: 000002d3
RAX: ffffffff816ce994 RBX: dffffc0000000000 RCX: ffff8880252d8000
RDX: 0000000000000000 RSI: ffffffff8e649830 RDI: ffffffff8ca1b680
RBP: ffffc9000ed9f650 R08: ffffffff905fe577 R09: 1ffffffff20bfcae
R10: dffffc0000000000 R11: fffffbfff20bfcaf R12: ffffffff93686020
R13: 1ffff92001db3eb4 R14: 0000000000000003 R15: 0000000000000003
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 kvm_wait+0x2c9/0x330 arch/x86/kernel/kvm.c:1063
 pv_wait arch/x86/include/asm/paravirt.h:584 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline]
 __pv_queued_spin_lock_slowpath+0x8d4/0xdc0 kernel/locking/qspinlock.c:325
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:572 [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+0x276/0x370 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 lock_for_kill+0xdc/0x210 fs/dcache.c:710
 dput+0x18a/0x2b0 fs/dcache.c:900
 __fput+0x60b/0x9f0 fs/file_table.c:473
 task_work_run+0x251/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa11/0x27f0 kernel/exit.c:953
 do_group_exit+0x207/0x2c0 kernel/exit.c:1102
 get_signal+0x1696/0x1730 kernel/signal.c:3034
 arch_do_signal_or_restart+0x98/0x810 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_page_fault+0x5f8/0x920 arch/x86/mm/fault.c:1541
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f9f0358e171
Code: Unable to access opcode bytes at 0x7f9f0358e147.
RSP: 002b:00000000fffffeb0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f9f037b5fa0 RCX: 00007f9f0358e169
RDX: 0000000000000000 RSI: 00000000fffffeb0 RDI: 0000000002000400
RBP: 00007f9f03610a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9f037b5fa0 R15: 00007fff7e648978
 </TASK>
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   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:	f3 0f 1e fa          	endbr64
  1b:	66 90                	xchg   %ax,%ax
  1d:	0f 00 2d 53 7e 18 00 	verw   0x187e53(%rip)        # 0x187e77
  24:	f3 0f 1e fa          	endbr64
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	c3                   	ret <-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop