Hi all, I'm using qemu on top of 4.13-rc6, and I got quite some warnings and my vguest dies at last. Here's my setting: virt-install --name=Win8 --ram=4096 --cpu=host --vcpus=2 \ --os-type=windows --os-variant=win8.1 \ --disk Win8.qcow2,bus=virtio \ --graphics spice --network network=default,model=virtio \ --import --noautoconsole And here's the floody warning: [ 2903.385773] ------------[ cut here ]------------ [ 2903.385794] WARNING: CPU: 1 PID: 2928 at arch/x86/kvm/mmu.c:717 mmu_spte_clear_track_bits+0x86/0x110 [kvm] [ 2903.385794] Modules linked in: vhost_net vhost tap xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables rfcomm bnep arc4 asix usbnet mii binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi hid_multitouch dell_laptop snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_codec_realtek intel_rapl snd_hda_codec_generic snd_hda_ext_core snd_soc_sst_match snd_soc_core x86_pkg_temp_thermal intel_powerclamp snd_compress coretemp crct10dif_pclmul snd_pcm_dmaengine ac97_bus crc32_pclmul snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep ghash_clmulni_intel [ 2903.385817] snd_pcm pcbc snd_seq_midi snd_seq_midi_event snd_rawmidi aesni_intel aes_x86_64 crypto_simd snd_seq glue_helper cryptd snd_seq_device intel_cstate intel_rapl_perf snd_timer ath10k_pci snd ath10k_core ath joydev mac80211 input_leds uvcvideo dell_wmi dell_smbios serio_raw cfg80211 dcdbas videobuf2_vmalloc videobuf2_memops soundcore wmi_bmof videobuf2_v4l2 idma64 rtsx_pci_ms virt_dma videobuf2_core videodev memstick mei_me mei media intel_pch_thermal intel_lpss_pci btusb processor_thermal_device shpchp btrtl intel_soc_dts_iosf hci_uart btbcm btqca btintel soc_button_array intel_vbtn bluetooth ecdh_generic intel_lpss_acpi intel_lpss intel_hid int3403_thermal int340x_thermal_zone int3400_thermal sparse_keymap acpi_thermal_rel acpi_pad acpi_als kfifo_buf industrialio mac_hid kvm_intel kvm [ 2903.385846] irqbypass parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect nvme sysimgblt fb_sys_fops nvme_core i2c_hid drm rtsx_pci wmi hid pinctrl_sunrisepoint video pinctrl_intel [ 2903.385860] CPU: 1 PID: 2928 Comm: qemu-system-x86 Not tainted 4.13.0-rc6+ #32 [ 2903.385861] Hardware name: Dell Inc. XPS 13 9360/05JK94, BIOS 1.2.3 12/01/2016 [ 2903.385862] task: ffff979b6d918fc0 task.stack: ffffbd7a02d98000 [ 2903.385878] RIP: 0010:mmu_spte_clear_track_bits+0x86/0x110 [kvm] [ 2903.385878] RSP: 0018:ffffbd7a02d9bb20 EFLAGS: 00010246 [ 2903.385879] RAX: 0000000000000000 RBX: 0000000005f34f77 RCX: ffffffffffffffff [ 2903.385880] RDX: 0000000000000000 RSI: ffff9799437bfa48 RDI: ffffe6bd8017cd00 [ 2903.385881] RBP: ffffbd7a02d9bb40 R08: 0000000000000100 R09: 0000000000000023 [ 2903.385881] R10: ffff979901110008 R11: ffff979901110000 R12: 0000000000005f34 [ 2903.385882] R13: ffff979b12610000 R14: ffff979b2e786348 R15: 0000000000000069 [ 2903.385883] FS: 00007f96f7691c00(0000) GS:ffff979b7e480000(0000) knlGS:0000000000000000 [ 2903.385884] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2903.385884] CR2: 00007fb852901140 CR3: 00000002732e3000 CR4: 00000000003426e0 [ 2903.385885] Call Trace: [ 2903.385898] drop_spte+0x1a/0xb0 [kvm] [ 2903.385908] mmu_page_zap_pte+0xcd/0xe0 [kvm] [ 2903.385919] kvm_mmu_prepare_zap_page+0x65/0x310 [kvm] [ 2903.385930] kvm_mmu_invalidate_zap_all_pages+0xeb/0x140 [kvm] [ 2903.385941] kvm_mmu_invalidate_zap_pages_in_memslot+0xe/0x10 [kvm] [ 2903.385952] kvm_page_track_flush_slot+0x57/0x80 [kvm] [ 2903.385963] kvm_arch_flush_shadow_memslot+0xe/0x10 [kvm] [ 2903.385972] __kvm_set_memory_region.part.50+0x7b0/0x940 [kvm] [ 2903.385981] kvm_set_memory_region+0x4d/0x60 [kvm] [ 2903.385990] kvm_vm_ioctl+0x48a/0x870 [kvm] [ 2903.385993] ? do_send_sig_info+0x6c/0xa0 [ 2903.385996] do_vfs_ioctl+0xa1/0x5e0 [ 2903.385999] ? SyS_futex+0x7f/0x180 [ 2903.386000] SyS_ioctl+0x79/0x90 [ 2903.386002] entry_SYSCALL_64_fastpath+0x1e/0xa9 [ 2903.386003] RIP: 0033:0x7f96f23b7f07 [ 2903.386004] RSP: 002b:00007ffddbdf5448 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 2903.386005] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00007f96f23b7f07 [ 2903.386005] RDX: 00007ffddbdf54b0 RSI: 000000004020ae46 RDI: 000000000000000d [ 2903.386006] RBP: ffffffffffffffff R08: 0000560b89bd5e40 R09: 0000560b89bde000 [ 2903.386006] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 2903.386007] R13: 0000560b89bc7540 R14: 0000000000000000 R15: 0000560b87d66440 [ 2903.386008] Code: 2f fe ff 84 c0 75 26 4c 89 e0 48 c1 e0 06 48 03 05 b8 51 6b ed 48 8b 50 20 48 8d 4a ff 83 e2 01 48 0f 45 c1 8b 40 1c 85 c0 75 02 <0f> ff 48 b8 00 00 00 00 00 00 00 40 48 21 d8 49 89 c5 75 50 48 [ 2903.386025] ---[ end trace 0fe4feafc699781e ]--- Any idea on this? Thanks. Yu
