loop0: detected capacity change from 0 to 32768
BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5329)
BTRFS info (device loop0): first mount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2
BTRFS info (device loop0): using xxhash64 checksum algorithm
BTRFS warning (device loop0): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
BTRFS info (device loop0): rebuilding free space tree
BTRFS info (device loop0): disabling free space tree
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop0): allowing degraded mounts
BTRFS info (device loop0): enabling ssd optimizations
BTRFS info (device loop0): turning on async discard
BTRFS info (device loop0): enabling disk space caching
BTRFS info (device loop0): force clearing of disk cache
BTRFS info (device loop0): use zlib compression, level 3
------------[ cut here ]------------
kvm_is_error_gpa(gpa) == kvm_is_error_hva(uhva)
WARNING: arch/x86/kvm/../../../virt/kvm/pfncache.c:267 at __kvm_gpc_refresh+0x154c/0x1750 virt/kvm/pfncache.c:267, CPU#0: syz.0.0/5329
Modules linked in:
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__kvm_gpc_refresh+0x154c/0x1750 virt/kvm/pfncache.c:267
Code: c6 05 b7 b0 d9 0e 01 48 c7 c7 49 f6 f8 8d be 3c 04 00 00 48 c7 c2 e0 3d c2 8b e8 4f 07 61 00 e9 40 ee ff ff e8 65 d2 84 00 90 <0f> 0b 90 bb ea ff ff ff 49 bf 00 00 00 00 00 fc ff df e9 fa f5 ff
RSP: 0000:ffffc9000499f1c0 EFLAGS: 00010287
RAX: ffffffff8140e14b RBX: ffff888000000000 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000000003a5 RDI: 00000000000003a6
RBP: ffffc9000499f348 R08: ffffffff9030bbf7 R09: 1ffffffff206177e
R10: dffffc0000000000 R11: fffffbfff206177f R12: 1ffff92000933e4c
R13: ffff888040d99280 R14: ffff888000000000 R15: ffffffffffffff01
FS:  00007f1b07f026c0(0000) GS:ffff88808c888000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005605800ae5d8 CR3: 000000003e475000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 kvm_gpc_refresh+0xe1/0x120 virt/kvm/pfncache.c:382
 kvm_xen_set_evtchn+0x163/0x230 arch/x86/kvm/xen.c:1942
 kvm_xen_hvm_evtchn_send+0x120/0x1e0 arch/x86/kvm/xen.c:2033
 kvm_arch_vm_ioctl+0xfb1/0x1a10 arch/x86/kvm/x86.c:7537
 kvm_vm_ioctl+0x905/0xd50 virt/kvm/kvm_main.c:5380
 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b06f9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1b07f01fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1b07215fa0 RCX: 00007f1b06f9cdd9
RDX: 0000200000000980 RSI: 00000000400caed0 RDI: 0000000000000005
RBP: 00007f1b07032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b07216038 R14: 00007f1b07215fa0 R15: 00007ffdcc528f78
 </TASK>