------------[ cut here ]------------
WARNING: CPU: 1 PID: 6874 at arch/x86/kvm/../../../virt/kvm/pfncache.c:267 __kvm_gpc_refresh+0x10a1/0x1220 virt/kvm/pfncache.c:267
Modules linked in:
CPU: 1 UID: 0 PID: 6874 Comm: syz.0.226 Not tainted 6.15.0-rc5-syzkaller-00038-g707df3375124 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
RIP: 0010:__kvm_gpc_refresh+0x10a1/0x1220 virt/kvm/pfncache.c:267
Code: c6 05 64 d0 28 0e 01 48 c7 c7 30 66 73 8d be 24 04 00 00 48 c7 c2 80 ea 61 8b e8 5a 6a 5e 00 e9 ba f2 ff ff e8 20 f2 7f 00 90 <0f> 0b 90 bb ea ff ff ff e9 de f9 ff ff e8 0d f2 7f 00 90 0f 0b 90
RSP: 0018:ffffc900030371e0 EFLAGS: 00010283
RAX: ffffffff813fde30 RBX: ffff888000000000 RCX: 0000000000080000
RDX: ffffc90004992000 RSI: 00000000000003a1 RDI: 00000000000003a2
RBP: ffffc90003037348 R08: ffffffff8f7ed977 R09: 1ffffffff1efdb2e
R10: dffffc0000000000 R11: fffffbfff1efdb2f R12: ffff887fffffffff
R13: dffffc0000000000 R14: ffffffffffffff01 R15: ffffc900043353c0
FS:  00007f5aad81f6c0(0000) GS:ffff8881261cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3a84ed CR3: 00000000575d8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_gpc_refresh+0xc4/0xf0 virt/kvm/pfncache.c:382
 kvm_xen_set_evtchn+0x164/0x230 arch/x86/kvm/xen.c:1942
 kvm_xen_hvm_evtchn_send+0x120/0x1e0 arch/x86/kvm/xen.c:2022
 kvm_arch_vm_ioctl+0xe3d/0x16f0 arch/x86/kvm/x86.c:7268
 kvm_vm_ioctl+0x85f/0xc60 virt/kvm/kvm_main.c:5292
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5aac98e969
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:00007f5aad81f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5aacbb5fa0 RCX: 00007f5aac98e969
RDX: 0000200000000180 RSI: 00000000400caed0 RDI: 0000000000000005
RBP: 00007f5aaca10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5aacbb5fa0 R15: 00007f5aaccdfa28
 </TASK>