------------[ cut here ]------------ WARNING: CPU: 3 PID: 6389 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:3471 kvm_read_guest_offset_cached+0x3f5/0x4b0 virt/kvm/kvm_main.c:3471 Modules linked in: CPU: 3 UID: 0 PID: 6389 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~bpo12+1 04/01/2014 RIP: 0010:kvm_read_guest_offset_cached+0x3f5/0x4b0 virt/kvm/kvm_main.c:3471 Code: 0f 01 e8 6e ea 60 00 e9 9b fc ff ff e8 f4 5a 85 00 48 8b 3c 24 31 d2 48 89 ee e8 36 0d fd 00 e9 2e fe ff ff e8 dc 5a 85 00 90 <0f> 0b 90 bb ea ff ff ff e9 4d fe ff ff e8 c9 5a 85 00 48 8b 74 24 RSP: 0018:ffffc90003d17940 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880360218c0 RCX: ffffffff813716b6 RDX: ffff88802399c900 RSI: ffffffff813719d4 RDI: 0000000000000006 RBP: 0000000000000004 R08: 0000000000000006 R09: 0000000000000008 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 R13: ffff888050518000 R14: 0000000000000000 R15: ffff8880505185a0 FS: 00007f8e272ab6c0(0000) GS:ffff8880d6cdd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000032b21000 CR4: 0000000000352ef0 Call Trace: apf_pageready_slot_free arch/x86/kvm/x86.c:13782 [inline] kvm_arch_can_dequeue_async_page_present+0x172/0x310 arch/x86/kvm/x86.c:13901 kvm_check_async_pf_completion+0x61/0x440 virt/kvm/async_pf.c:158 vcpu_enter_guest arch/x86/kvm/x86.c:11183 [inline] vcpu_run+0x490a/0x54d0 arch/x86/kvm/x86.c:11612 kvm_arch_vcpu_ioctl_run+0x1023/0x1970 arch/x86/kvm/x86.c:11951 kvm_vcpu_ioctl+0x5eb/0x1690 virt/kvm/kvm_main.c:4476 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+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8e2638e929 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:00007f8e272ab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8e265b5fa0 RCX: 00007f8e2638e929 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00007f8e26410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8e265b5fa0 R15: 00007ffdeb213b68