------------[ cut here ]------------ WARNING: CPU: 0 PID: 6640 at arch/x86/kvm/../../../virt/kvm/pfncache.c:259 __kvm_gpc_refresh+0xf17/0x1090 arch/x86/kvm/../../../virt/kvm/pfncache.c:259 Modules linked in: CPU: 0 PID: 6640 Comm: syz-executor.1 Not tainted 6.10.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:__kvm_gpc_refresh+0xf17/0x1090 arch/x86/kvm/../../../virt/kvm/pfncache.c:259 Code: c6 05 c2 50 8a 0e 01 48 c7 c7 20 e6 c1 8b be 03 04 00 00 48 c7 c2 60 e6 c1 8b e8 04 72 65 00 e9 cd f3 ff ff e8 9a d2 88 00 90 <0f> 0b 90 41 bf ea ff ff ff e9 c2 fe ff ff e8 86 d2 88 00 90 0f 0b RSP: 0018:ffffc90002e97430 EFLAGS: 00010283 RAX: ffffffff810d43e6 RBX: ffffffffffffff01 RCX: 0000000000040000 RDX: ffffc900111da000 RSI: 0000000000001e57 RDI: 0000000000001e58 RBP: ffff8880692b9148 R08: ffffffff810d351f R09: 1ffffffff25f50d1 R10: dffffc0000000000 R11: fffffbfff25f50d2 R12: fffffffe00000000 R13: ffff8880692b90d0 R14: ffff8880692b90d0 R15: ffff887fffffffff FS: 00007fbe5274e6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa24000 CR3: 000000002d332000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __kvm_gpc_activate+0xdc/0x400 arch/x86/kvm/../../../virt/kvm/pfncache.c:416 kvm_xen_vcpu_set_attr+0x1c1/0x11c0 arch/x86/kvm/xen.c:890 kvm_arch_vcpu_ioctl+0x16b7/0x2cd0 arch/x86/kvm/x86.c:6280 kvm_vcpu_ioctl+0x6e0/0xd00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4578 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/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbe51a7cee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbe5274e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fbe51babf80 RCX: 00007fbe51a7cee9 RDX: 0000000020000040 RSI: 000000004048aecb RDI: 000000000000000d RBP: 00007fbe51ac949e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fbe51babf80 R15: 00007fbe51ccfa98