------------[ cut here ]------------
WARNING: CPU: 1 PID: 18165 at arch/x86/kvm/../../../virt/kvm/pfncache.c:267 __kvm_gpc_refresh+0x1187/0x1310 virt/kvm/pfncache.c:267
Modules linked in:
CPU: 1 UID: 0 PID: 18165 Comm: syz.1.1438 Not tainted 6.15.0-next-20250605-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__kvm_gpc_refresh+0x1187/0x1310 virt/kvm/pfncache.c:267
Code: c6 05 a6 c1 4a 0e 01 48 c7 c7 cb f4 96 8d be 28 04 00 00 48 c7 c2 a0 ec 81 8b e8 94 2c 5e 00 e9 fe f1 ff ff e8 7a 2b 80 00 90 <0f> 0b 90 bb ea ff ff ff e9 7e fe ff ff e8 67 2b 80 00 90 0f 0b 90
RSP: 0018:ffffc9000d11f600 EFLAGS: 00010287
RAX: ffffffff81403316 RBX: ffff888000000000 RCX: 0000000000080000
RDX: ffffc9000ca2c000 RSI: 00000000000004da RDI: 00000000000004db
RBP: ffffc9000d11f790 R08: ffffffff8fa124f7 R09: 1ffffffff1f4249e
R10: dffffc0000000000 R11: fffffbfff1f4249f R12: ffffc9000bfaa3c0
R13: dffffc0000000000 R14: ffff888000000000 R15: ffffffffffffff01
FS:  00007f43854cc6c0(0000) GS:ffff888125d4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f06aa572000 CR3: 000000007956a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_gpc_refresh+0xe1/0x110 virt/kvm/pfncache.c:382
 kvm_xen_set_evtchn+0x164/0x230 arch/x86/kvm/xen.c:1942
 kvm_set_irq+0x270/0x500 virt/kvm/irqchip.c:88
 kvm_vm_ioctl_irq_line+0x8c/0x130 arch/x86/kvm/x86.c:6552
 kvm_vm_ioctl+0x88d/0xc60 virt/kvm/kvm_main.c:5262
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 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: 0033:0x7f438458e929
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43854cc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f43847b5fa0 RCX: 00007f438458e929
RDX: 0000200000000240 RSI: 000000004008ae61 RDI: 0000000000000005
RBP: 00007f4384610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f43847b5fa0 R15: 00007ffdf1afa888
 </TASK>