------------[ cut here ]------------
len + offset > ghc->len
WARNING: arch/x86/kvm/../../../virt/kvm/kvm_main.c:3464 at kvm_read_guest_offset_cached+0x3f5/0x4b0 virt/kvm/kvm_main.c:3464, CPU#1: syz.0.16/6259
Modules linked in:
CPU: 1 UID: 0 PID: 6259 Comm: syz.0.16 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_read_guest_offset_cached+0x3f5/0x4b0 virt/kvm/kvm_main.c:3464
Code: 0f 01 e8 9e f7 62 00 e9 9b fc ff ff e8 54 6b 87 00 48 8b 3c 24 31 d2 48 89 ee e8 c6 f1 04 01 e9 2e fe ff ff e8 3c 6b 87 00 90 <0f> 0b 90 bb ea ff ff ff e9 4d fe ff ff e8 29 6b 87 00 48 8b 74 24
RSP: 0018:ffffc9000566f930 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880373f9918 RCX: ffffffff818124c6
RDX: ffff888034834a00 RSI: ffffffff818127e4 RDI: ffff888034834a00
RBP: 0000000000000004 R08: 0000000000000006 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: ffff8880258fc000 R14: 0000000000000000 R15: ffff8880258fc590
FS:  00007fc0755ad6c0(0000) GS:ffff8880d6473000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000023621000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 apf_pageready_slot_free arch/x86/kvm/x86.c:14010 [inline]
 kvm_arch_can_dequeue_async_page_present+0x172/0x310 arch/x86/kvm/x86.c:14133
 kvm_check_async_pf_completion+0x5c/0x440 virt/kvm/async_pf.c:158
 vcpu_enter_guest arch/x86/kvm/x86.c:11321 [inline]
 vcpu_run+0x4fb6/0x5ca0 arch/x86/kvm/x86.c:11765
 kvm_arch_vcpu_ioctl_run+0x5b6/0x1890 arch/x86/kvm/x86.c:12120
 kvm_vcpu_ioctl+0x730/0x1720 virt/kvm/kvm_main.c:4469
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc07479a079
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:00007fc0755ad028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc0749c5fa0 RCX: 00007fc07479a079
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fc07482ca4c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc0749c5fa0 R15: 00007ffe36e16898
 </TASK>