------------[ cut here ]------------
WARNING: arch/x86/kvm/../../../virt/kvm/pfncache.c:267 at __kvm_gpc_refresh+0x1187/0x1310 virt/kvm/pfncache.c:267, CPU#0: syz.3.917/9226
Modules linked in:
CPU: 0 UID: 0 PID: 9226 Comm: syz.3.917 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__kvm_gpc_refresh+0x1187/0x1310 virt/kvm/pfncache.c:267
Code: c6 05 44 3c 69 0e 01 48 c7 c7 11 4d a7 8d be 35 04 00 00 48 c7 c2 00 eb 81 8b e8 d4 40 5e 00 e9 fe f1 ff ff e8 3a 41 81 00 90 <0f> 0b 90 bb ea ff ff ff e9 7e fe ff ff e8 27 41 81 00 90 0f 0b 90
RSP: 0018:ffffc900043ff300 EFLAGS: 00010293
RAX: ffffffff81401e46 RBX: ffff888000000000 RCX: ffff888025915b80
RDX: 0000000000000000 RSI: ffff888000000000 RDI: ffff888000000000
RBP: ffffc900043ff488 R08: ffffffff8fbf7777 R09: 1ffffffff1f7eeee
R10: dffffc0000000000 R11: fffffbfff1f7eeef R12: ffff88804e3a53e0
R13: dffffc0000000000 R14: ffff888000000000 R15: ffffffffffffff01
FS:  00007f2028eff6c0(0000) GS:ffff888125a82000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2027f729e0 CR3: 0000000032166000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_gpc_refresh+0xe1/0x140 virt/kvm/pfncache.c:382
 kvm_xen_set_evtchn+0x164/0x230 arch/x86/kvm/xen.c:1943
 kvm_xen_inject_timer_irqs+0xfd/0x200 arch/x86/kvm/xen.c:118
 vcpu_run+0xc69/0x77c0 arch/x86/kvm/x86.c:11678
 kvm_arch_vcpu_ioctl_run+0x1143/0x1cd0 arch/x86/kvm/x86.c:12010
 kvm_vcpu_ioctl+0x99a/0xed0 virt/kvm/kvm_main.c:4477
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2027f8f6c9
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:00007f2028eff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f20281e5fa0 RCX: 00007f2027f8f6c9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000008
RBP: 00007f2028011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f20281e6038 R14: 00007f20281e5fa0 R15: 00007ffd969fa2e8
 </TASK>