[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
Please open a new bug - thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
I'm seeing a similar issue with trying to install the latest 16.04.1 i386 edition (http://releases.ubuntu.com/16.04/ubuntu-16.04.1-server-i386.iso) under libvirt/virt-manager, on an amd64 VM running 16.04.1 (4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux). qemu-kvm hangs, have to virsh destroy/kill the KVM process. cat /etc/modprobe.d/qemu-system-x86.conf: options kvm_intel nested=1 ... and kvm-ok says acceleration is enabled. Should I open a new bug report on this ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
This bug was fixed in the package linux - 3.16.0-44.59 --- linux (3.16.0-44.59) utopic; urgency=low [ Brad Figg ] * Release Tracking Bug - LP: #1472030 [ Iyappan Subramanian ] * SAUCE: (no-up) drivers: net: xgene: fix: Out of order descriptor bytes read - LP: #1425576 [ Upstream Kernel Changes ] * Revert tools/vm: fix page-flags build - LP: #1471170 * NVMe: Add shutdown timeout as module parameter. - LP: #1465136 * Drivers: hv: vmbus: Add support for VMBus panic notifier handler - LP: #1463584 * Drivers: hv: vmbus: Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY - LP: #1463584 * KVM: nVMX: fix lifetime issues for vmcs02 - LP: #1448269 * KVM: nVMX: Fix nested vmexit ack intr before load vmcs01 - LP: #1448269 * mm/slab_common: support the slub_debug boot option on specific object size - LP: #1456952 * kvm: x86: fix kvm_apic_has_events to check for NULL pointer * cpuidle: powernv: Populate cpuidle state details by querying the device-tree - LP: #1470404 * cpuidle: powernv: Read target_residency value of idle states from DT if available - LP: #1470404 * cpuidle: powernv: Avoid endianness conversions while parsing DT - LP: #1470404 * cpuidle: powernv/pseries: Auto-promotion of snooze to deeper idle state - LP: #1470404 * iio: adis16400: Report pressure channel scale - LP: #1471170 * iio: adis16400: Use != channel indices for the two voltage channels - LP: #1471170 * iio: adis16400: Compute the scan mask from channel indices - LP: #1471170 * iio: adis16400: Remove unused variable - LP: #1471170 * iio: adis16400: Fix burst mode - LP: #1471170 * iio: adis16400: Fix burst transfer for adis16448 - LP: #1471170 * USB: serial: ftdi_sio: Add support for a Motion Tracker Development Board - LP: #1471170 * iio: adc: twl6030-gpadc: Fix modalias - LP: #1471170 * serial: imx: Fix DMA handling for IDLE condition aborts - LP: #1471170 * usb: dwc3: gadget: Fix incorrect DEPCMD and DGCMD status macros - LP: #1471170 * ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion - LP: #1471170 * n_tty: Fix auditing support for cannonical mode - LP: #1471170 * drm/i915/hsw: Fix workaround for server AUX channel clock divisor - LP: #1471170 * x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers - LP: #1471170 * lib: Fix strnlen_user() to not touch memory after specified maximum - LP: #1471170 * Input: elantech - fix detection of touchpads where the revision matches a known rate - LP: #1471170 * ALSA: hda/realtek - Add a fixup for another Acer Aspire 9420 - LP: #1471170 * ALSA: usb-audio: add MAYA44 USB+ mixer control names - LP: #1471170 * ALSA: usb-audio: fix missing input volume controls in MAYA44 USB(+) - LP: #1471170 * USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle - LP: #1471170 * Input: elantech - add new icbody type - LP: #1471170 * MIPS: Fix enabling of DEBUG_STACKOVERFLOW - LP: #1471170 * xfrm: fix a race in xfrm_state_lookup_byspi - LP: #1471170 * kconfig: Fix warning ‘jump’ may be used uninitialized - LP: #1471170 * scripts/sortextable: suppress warning: `relocs_size' may be used uninitialized - LP: #1471170 * thermal: step_wise: Revert optimization - LP: #1471170 * MIPS: KVM: Do not sign extend on unsigned MMIO load - LP: #1471170 * arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug - LP: #1471170 * net: core: Correct an over-stringent device loop detection. - LP: #1471170 * net: phy: Allow EEE for all RGMII variants - LP: #1471170 * net: dp83640: fix broken calibration routine. - LP: #1471170 * net: dp83640: reinforce locking rules. - LP: #1471170 * unix/caif: sk_socket can disappear when state is unlocked - LP: #1471170 * xen/netback: Properly initialize credit_bytes - LP: #1471170 * udp: fix behavior of wrong checksums - LP: #1471170 * xen: netback: read hotplug script once at start of day. - LP: #1471170 * ipv4/udp: Verify multicast group is ours in upd_v4_early_demux() - LP: #1471170 * bridge: disable softirqs around br_fdb_update to avoid lockup - LP: #1471170 * drm/i915: Assume dual channel LVDS if pixel clock necessitates it - LP: #1471170 * Btrfs: send, add missing check for dead clone root - LP: #1471170 * Btrfs: send, don't leave without decrementing clone root's send_progress - LP: #1471170 * btrfs: incorrect handling for fiemap_fill_next_extent return - LP: #1471170 * btrfs: cleanup orphans while looking up default subvolume - LP: #1471170 * iommu/vt-d: Allow RMRR on graphics devices too - LP: #1471170 * iommu/vt-d: Fix passthrough mode with translation-disabled devices - LP: #1471170 * ata: ahci_mvebu: Fix wrongly set base address for the MBus
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- utopic' to 'verification-done-utopic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-utopic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
Verified this on my desktop. ** Tags removed: verification-needed-utopic ** Tags added: verification-done-utopic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
I've tested this on my own workstation starting nested VMs and also testing other types of VMs I run on my system. In addition I've also run kvm-unit-tests on this patchset and it has the same results as before the patches. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
@arges that kernel allows me to run accelerated kvm nested - thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
** Changed in: linux (Ubuntu Utopic) Status: In Progress = Fix Released ** Changed in: linux (Ubuntu Utopic) Status: Fix Released = Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
** Description changed: + [Impact] + Users of nested KVM may experience the L1 VM hanging when booting an L2 VM. Overall this seems to be due to issues with external interrupts not reaching L1 when L2 gets booted. + + [Test Case] + Run a nested KVM instance: + https://gist.github.com/arges/9d21c6da03a8c10d3980 + + [Fix] + commit 4fa7734c62cdd8c07edd54fa5a5e91482273071a + commit f3380ca5d7edb5e31932998ab2e29dfdce39c5ed + + -- + I'm creating a vivid qemu guest on a trusty host with 3.13.0-48-generic kernel. When I start a guest inside that guest, I get the oops below on the host while the first guest hangs and must be (virsh) destroyed. Apr 24 20:40:08 sergeh2 kernel: [1575627.844208] [ cut here ] Apr 24 20:40:08 sergeh2 kernel: [1575627.844227] WARNING: CPU: 2 PID: 17176 at /build/buildd/linux-3.13.0/arch/x86/kvm/vmx.c:8414 nested_vmx_vmexit+0x11c/0x150 [kvm_intel]() Apr 24 20:40:08 sergeh2 kernel: [1575627.844229] Modules linked in: vhost_net vhost macvtap macvlan xts gf128mul xt_conntrack ipt_REJECT ip6table_filter ip6_tables ebtable_nat ebtables veth xt_nat xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables dm_crypt gpio_ich coretemp kvm_intel kvm i7core_edac edac_core lpc_ich shpchp mac_hid serio_raw lp parp ort btrfs libcrc32c raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid0 multipath linear dm_snapshot raid1 nouveau mxm_wmi video i2c_algo_bit ttm drm_kms_helper drm ahci r8169 libahci mii wmi Apr 24 20:40:08 sergeh2 kernel: [1575627.844281] CPU: 2 PID: 17176 Comm: qemu-system-x86 Not tainted 3.13.0-48-generic #80-Ubuntu Apr 24 20:40:08 sergeh2 kernel: [1575627.844283] Hardware name: MSI MS-7522/MSI X58 Pro (MS-7522) , BIOS V8.14B8 11/09/2012 Apr 24 20:40:08 sergeh2 kernel: [1575627.844286] 0009 880907561c98 81721506 Apr 24 20:40:08 sergeh2 kernel: [1575627.844290] 880907561cd0 810677dd 880bfa808000 0014 Apr 24 20:40:08 sergeh2 kernel: [1575627.844293] 8806da7a7000 880bfca9c800 880907561ce0 Apr 24 20:40:08 sergeh2 kernel: [1575627.844297] Call Trace: Apr 24 20:40:08 sergeh2 kernel: [1575627.844305] [81721506] dump_stack+0x45/0x56 Apr 24 20:40:08 sergeh2 kernel: [1575627.844310] [810677dd] warn_slowpath_common+0x7d/0xa0 Apr 24 20:40:08 sergeh2 kernel: [1575627.844314] [810678ba] warn_slowpath_null+0x1a/0x20 Apr 24 20:40:08 sergeh2 kernel: [1575627.844321] [a081f8ec] nested_vmx_vmexit+0x11c/0x150 [kvm_intel] Apr 24 20:40:08 sergeh2 kernel: [1575627.844327] [a081fafd] vmx_queue_exception+0xfd/0x140 [kvm_intel] Apr 24 20:40:08 sergeh2 kernel: [1575627.844347] [a03b7020] vcpu_enter_guest+0x9f0/0xce0 [kvm] Apr 24 20:40:08 sergeh2 kernel: [1575627.844364] [a03bb2d8] kvm_arch_vcpu_ioctl_run+0x1e8/0x460 [kvm] Apr 24 20:40:08 sergeh2 kernel: [1575627.844376] [a03a5042] kvm_vcpu_ioctl+0x2a2/0x5e0 [kvm] Apr 24 20:40:08 sergeh2 kernel: [1575627.844381] [810aaa38] ? __wake_up_common+0x58/0x90 Apr 24 20:40:08 sergeh2 kernel: [1575627.844387] [811ffc91] ? fsnotify+0x241/0x320 Apr 24 20:40:08 sergeh2 kernel: [1575627.844391] [811d11c0] do_vfs_ioctl+0x2e0/0x4c0 Apr 24 20:40:08 sergeh2 kernel: [1575627.844406] [a03b0504] ? kvm_on_user_return+0x74/0x80 [kvm] Apr 24 20:40:08 sergeh2 kernel: [1575627.844409] [811d1421] SyS_ioctl+0x81/0xa0 Apr 24 20:40:08 sergeh2 kernel: [1575627.844414] [81731fbd] system_call_fastpath+0x1a/0x1f Apr 24 20:40:08 sergeh2 kernel: [1575627.844416] ---[ end trace 351396e62b6ef224 ]--- Apr 24 20:48:29 sergeh2 dnsmasq-dhcp[1409]: DHCPREQUEST(lxcbr0) 10.0.3.104 00:16:3e:72:73:32 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-48-generic 3.13.0-48.80 ProcVersionSignature: Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16 Uname: Linux 3.13.0-48-generic x86_64 AlsaDevices: - total 0 - crw-rw 1 root audio 116, 1 Apr 10 14:22 seq - crw-rw 1 root audio 116, 33 Apr 10 14:22 timer + total 0 + crw-rw 1 root audio 116, 1 Apr 10 14:22 seq + crw-rw 1 root audio 116, 33 Apr 10 14:22 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.14.1-0ubuntu3.10 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory: 'iw' CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied Date: Fri Apr 24 20:59:31
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
** Also affects: linux (Ubuntu Utopic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Utopic) Assignee: (unassigned) = Chris J Arges (arges) ** Changed in: linux (Ubuntu) Assignee: Chris J Arges (arges) = (unassigned) ** Changed in: linux (Ubuntu) Status: In Progress = Fix Released ** Changed in: linux (Ubuntu Utopic) Importance: Undecided = Medium ** Changed in: linux (Ubuntu) Importance: Medium = Undecided ** Changed in: linux (Ubuntu Utopic) Status: New = In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
A test build with the fix is available here: http://people.canonical.com/~arges/lp1448269/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
Ok I can repro on this end. I'll start debugging this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
I had this issue (kernel oops) when I explicitly disabled ignore_msrs (Ubuntu Trusty, 3.13.0-54-generic): cat /etc/modprobe.d/qemu-system-x86.conf options kvm-intel nested=y ept=y options kvm ignore_msrs=1 Removing the option kvm ignore_msrs=1 made the guest (L2) run but give a KVM: entry failed, hardware error 0x7 when the L1 guest (guest hypervisor) was booted with these cpu flags (libvirt): cpu archx86_64/arch modelNehalem/model vendorIntel/vendor topology sockets='1' cores='2' threads='2'/ feature name='rdtscp'/ feature name='dca'/ feature name='pdcm'/ feature name='xtpr'/ feature name='tm2'/ feature name='est'/ feature name='vmx'/ feature name='ds_cpl'/ feature name='monitor'/ feature name='dtes64'/ feature name='pbe'/ feature name='tm'/ feature name='ht'/ feature name='ss'/ feature name='acpi'/ feature name='ds'/ feature name='vme'/ /cpu Guest VM (L2) running fine with these cpu flags (libvirt) for guest VM (L1): cpu match='exact' cpu mode='host-passthrough'/ modelNehalem/model feature policy='require' name='vmx'/ /cpu @Serge Hallyn: I wonder what cpu parameters you have defined for your L1 guest (guest hypervisor) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
I had made no changes, i.e. options kvm_intel nested=1 I've changed that to 0 to get past crashes during automated testing, but have not added ignore_msrs=1. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
** Changed in: linux (Ubuntu) Status: Triaged = In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
With 3.16.0-37-generic on the host, i no longer get an oops on the host, and the guest instantly reboots rather than hanging. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
This happens with both (first-level) guest kernels 3.19.0-20-generic and 3.19.0-18-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
** Changed in: linux (Ubuntu) Importance: Undecided = Medium ** Tags added: kernel-da-key ** Tags added: bot-stop-nagging ** Changed in: linux (Ubuntu) Status: Incomplete = Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
1) Can you dump the domain XML (if using libvirt), or qemu command used to
invoke the VM. I'm wondering if there is some cpu feature mismatch going on.
2) Can you do 'tail /sys/module/kvm_intel/parameters/*'?
Looks like WARN here:
/*
* Emulate an exit from nested guest (L2) to L1, i.e., prepare to run L1
* and modify vmcs12 to make it see what it would expect to see there if
* L2 was its real guest. Must only be called when in L2 (is_guest_mode())
*/
static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
u32 exit_intr_info,
unsigned long exit_qualification)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
int cpu;
struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
/* trying to cancel vmlaunch/vmresume is a bug */
WARN_ON_ONCE(vmx-nested.nested_run_pending);
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Chris J Arges (arges)
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qemu guest hangs on nested kvm startup with host kernel oops
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Re: [Bug 1448269] Re: qemu guest hangs on nested kvm startup with host kernel oops
Quoting Chris J Arges (1448...@bugs.launchpad.net): 1) Can you dump the domain XML (if using libvirt), or qemu command used to invoke the VM. I'm wondering if there is some cpu feature mismatch going on. domain type='kvm' namep9/name uuid558ac100-65d0-437b-b19b-7d8946b92b8d/uuid memory unit='KiB'4194304/memory currentMemory unit='KiB'4194304/currentMemory vcpu placement='static'4/vcpu os type arch='x86_64' machine='pc-i440fx-trusty'hvm/type boot dev='hd'/ /os features acpi/ apic/ pae/ /features clock offset='utc'/ on_poweroffdestroy/on_poweroff on_rebootrestart/on_reboot on_crashdestroy/on_crash devices emulator/usr/bin/kvm-spice/emulator disk type='file' device='disk' driver name='qemu' type='qcow2' cache='unsafe'/ source file='/var/lib/uvtool/libvirt/images/p9.qcow'/ target dev='vda' bus='virtio'/ address type='pci' domain='0x' bus='0x00' slot='0x04' function='0x0'/ /disk disk type='file' device='disk' driver name='qemu' type='raw' cache='unsafe'/ source file='/var/lib/uvtool/libvirt/images/p9-ds.qcow'/ target dev='vdb' bus='virtio'/ address type='pci' domain='0x' bus='0x00' slot='0x05' function='0x0'/ /disk controller type='usb' index='0' address type='pci' domain='0x' bus='0x00' slot='0x01' function='0x2'/ /controller controller type='pci' index='0' model='pci-root'/ interface type='network' mac address='52:54:00:0b:4c:35'/ source network='default'/ model type='virtio'/ address type='pci' domain='0x' bus='0x00' slot='0x03' function='0x0'/ /interface serial type='pty' target port='0'/ /serial console type='pty' target type='serial' port='0'/ /console input type='mouse' bus='ps2'/ input type='keyboard' bus='ps2'/ graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' listen type='address' address='127.0.0.1'/ /graphics video model type='cirrus' vram='9216' heads='1'/ address type='pci' domain='0x' bus='0x00' slot='0x02' function='0x0'/ /video memballoon model='virtio' address type='pci' domain='0x' bus='0x00' slot='0x06' function='0x0'/ /memballoon /devices /domain 2) Can you do 'tail /sys/module/kvm_intel/parameters/*'? == /sys/module/kvm_intel/parameters/emulate_invalid_guest_state == Y == /sys/module/kvm_intel/parameters/enable_apicv == N == /sys/module/kvm_intel/parameters/enable_shadow_vmcs == N == /sys/module/kvm_intel/parameters/ept == Y == /sys/module/kvm_intel/parameters/eptad == N == /sys/module/kvm_intel/parameters/fasteoi == Y == /sys/module/kvm_intel/parameters/flexpriority == Y == /sys/module/kvm_intel/parameters/nested == Y == /sys/module/kvm_intel/parameters/ple_gap == 0 == /sys/module/kvm_intel/parameters/ple_window == 4096 == /sys/module/kvm_intel/parameters/unrestricted_guest == N == /sys/module/kvm_intel/parameters/vmm_exclusive == Y == /sys/module/kvm_intel/parameters/vpid == Y -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448269 Title: qemu guest hangs on nested kvm startup with host kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
