=============================
[ BUG: Invalid wait context ]
6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0 Not tainted
-----------------------------
swapper/0/0 is trying to lock:
ffffc9000127f458 (&gpc->lock){....}-{3:3}, at: kvm_xen_set_evtchn_fast+0x1fc/0xa00 arch/x86/kvm/xen.c:1755
other info that might help us debug this:
context-{2:2}
1 lock held by swapper/0/0:
 #0: ffffc9000127f968 (&kvm->srcu){.?.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
 #0: ffffc9000127f968 (&kvm->srcu){.?.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
 #0: ffffc9000127f968 (&kvm->srcu){.?.+}-{0:0}, at: kvm_xen_set_evtchn_fast+0x1c9/0xa00 arch/x86/kvm/xen.c:1753
stack backtrace:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
 check_wait_context kernel/locking/lockdep.c:4900 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
 _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236
 kvm_xen_set_evtchn_fast+0x1fc/0xa00 arch/x86/kvm/xen.c:1755
 xen_timer_callback+0x1a0/0x380 arch/x86/kvm/xen.c:140
 __run_hrtimer kernel/time/hrtimer.c:1801 [inline]
 __hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:default_idle+0x13/0x20 arch/x86/kernel/process.c:744
Code: 29 c2 e9 72 ff ff ff 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 83 eb 1c 00 f3 0f 1e fa fb f4 <fa> c3 cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e807d68 EFLAGS: 000002c2
RAX: b69aa7ad467b8e00 RBX: ffffffff819628dc RCX: 000000000000ac01
RDX: 0000000000000001 RSI: ffffffff8c2aa4a0 RDI: ffffffff8c80f060
RBP: ffffffff8e807eb8 R08: ffff88801fc3799b R09: 1ffff11003f86f33
R10: dffffc0000000000 R11: ffffed1003f86f34 R12: 1ffffffff1d00fc6
R13: 1ffffffff1d12cb0 R14: 0000000000000000 R15: dffffc0000000000
 default_idle_call+0x74/0xb0 kernel/sched/idle.c:117
 cpuidle_idle_call kernel/sched/idle.c:185 [inline]
 do_idle+0x22c/0x5c0 kernel/sched/idle.c:325
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
 rest_init+0x2dc/0x300 init/main.c:743
 start_kernel+0x484/0x510 init/main.c:1099
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:515
 x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:496
 common_startup_64+0x13e/0x147
 </TASK>
----------------
Code disassembly (best guess):
   0:	29 c2                	sub    %eax,%edx
   2:	e9 72 ff ff ff       	jmp    0xffffff79
   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 83 eb 1c 00 	verw   0x1ceb83(%rip)        # 0x1ceba7
  24:	f3 0f 1e fa          	endbr64
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	fa                   	cli <-- trapping instruction
  2b:	c3                   	ret
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  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